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"https://www.dbi-services.com/blog/oracle-an-unexpected-lock-behaviour-with-rollback/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle: an unexpected lock behavior with rollback.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-cloud-control-sql-details-statistics", "database": "Oracle Database", "date": "2014-10-29", "employment_period": "dbi-services-2014", "title": "Oracle cloud control / SQL Details / Statistics", "url": "https://www.dbi-services.com/blog/oracle-cloud-control-sql-details-statistics/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle cloud control / SQL Details / Statistics.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-sql-profiles-check-what-they-do-before-accepting-them-blindly", "database": "Oracle Database", "date": "2014-11-07", "employment_period": "dbi-services-2014", "title": "Oracle SQL Profiles: Check what they do before accepting them blindly", "url": "https://www.dbi-services.com/blog/oracle-sql-profiles-check-what-they-do-before-accepting-them-blindly/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle SQL Profiles: Check what they do before accepting them blindly.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-sql-profile-why-multiple-optestimate", "database": "Oracle Database", "date": "2014-11-08", "employment_period": "dbi-services-2014", "title": "Oracle SQL Profile: why multiple OPT_ESTIMATE?", "url": "https://www.dbi-services.com/blog/oracle-sql-profile-why-multiple-optestimate/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle SQL Profile: why multiple OPT_ESTIMATE?.", "relation_aware": false }, { "publication_id": "dbi-services:awr-dont-store-explain-plan-predicates", "database": "Oracle Database", "date": "2014-11-11", "employment_period": "dbi-services-2014", "title": "AWR does not store explain plan predicates", "url": "https://www.dbi-services.com/blog/awr-dont-store-explain-plan-predicates/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "limitation", "possesses stated disadvantages" ], "evidence_excerpt": "Time for a Wish I wish that one day Oracle will release that limitation so that we can get predicate information from AWR (when in EE + Diagnostic Pack) and Statspack (SE and EE without option).", "relation_aware": true }, { "publication_id": "dbi-services:oracle-locks-identifiying-blocking-sessions", "database": "Oracle Database", "date": "2014-11-17", "employment_period": "dbi-services-2014", "title": "Oracle locks: Identifying blocking sessions", "url": "https://www.dbi-services.com/blog/oracle-locks-identifiying-blocking-sessions/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "More information about ROWID, relative file number and data object id in my previous post: From 8.0 extended rowid to 12c pluggable db: Why Oracle Database is still a great software", "relation_aware": false }, { "publication_id": "dbi-services:12c-privilege-analysis-rocks", "database": "Oracle Database", "date": "2014-11-26", "employment_period": "dbi-services-2014", "title": "Oracle 12c privilege analysis rocks", "url": "https://www.dbi-services.com/blog/12c-privilege-analysis-rocks/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12c privilege analysis rocks.", "relation_aware": false }, { "publication_id": "dbi-services:when-oracle-resets-session-statistics", "database": "Oracle Database", "date": "2014-11-29", "employment_period": "dbi-services-2014", "title": "When Oracle resets session statistics", "url": "https://www.dbi-services.com/blog/when-oracle-resets-session-statistics/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "During our Oracle 12c New Features workshop I had a very good question about whether the session statistics are reset or not when doing ALTER SESSION SET CONTAINER.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12c-comparing-tts-with-noncdbtopdb", "database": "Oracle Database", "date": "2014-12-01", "employment_period": "dbi-services-2014", "title": "Oracle 12c: comparing TTS with noncdb_to_pdb", "url": "https://www.dbi-services.com/blog/oracle-12c-comparing-tts-with-noncdbtopdb/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12c: comparing TTS with noncdb_to_pdb.", "relation_aware": false }, { "publication_id": "dbi-services:can-we-disable-logging-for-dml", "database": "Oracle Database", "date": "2014-12-15", "employment_period": "dbi-services-2014", "title": "Oracle 12c: Can we disable logging for DML?", "url": "https://www.dbi-services.com/blog/can-we-disable-logging-for-dml/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12c: Can we disable logging for DML?.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-lateral-inline-view-cursor-expression-and-12c-implicit-statement-result", "database": "Oracle Database", "date": "2014-12-15", "employment_period": "dbi-services-2014", "title": "Oracle lateral inline view, cursor expression and 12c implicit statement result", "url": "https://www.dbi-services.com/blog/oracle-lateral-inline-view-cursor-expression-and-12c-implicit-statement-result/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle lateral inline view, cursor expression and 12c implicit statement result.", "relation_aware": false }, { "publication_id": "dbi-services:create-schema-synonym-in-oracle-unsupported-feature", "database": "Oracle Database", "date": "2014-12-28", "employment_period": "dbi-services-2014", "title": "Creating a schema synonym in Oracle – an unsupported feature", "url": "https://www.dbi-services.com/blog/create-schema-synonym-in-oracle-unsupported-feature/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "technical exploration", "scope": "product-wide", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "unsupported" ], "evidence_excerpt": "Creating a schema synonym in Oracle – an unsupported feature.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-multitenant-dictionary-object-links", "database": "Oracle Database", "date": "2014-12-29", "employment_period": "dbi-services-2014", "title": "Oracle multitenant dictionary: object links", "url": "https://www.dbi-services.com/blog/oracle-multitenant-dictionary-object-links/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle multitenant dictionary: object links.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-multitenant-dictionary-metadata-links", "database": "Oracle Database", "date": "2015-01-05", "employment_period": "dbi-services-2014", "title": "Oracle multitenant dictionary: metadata links", "url": "https://www.dbi-services.com/blog/oracle-multitenant-dictionary-metadata-links/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle multitenant dictionary: metadata links.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-multitenant-dictionary-upgrade", "database": "Oracle Database", "date": "2015-01-05", "employment_period": "dbi-services-2014", "title": "Oracle multitenant dictionary: upgrade", "url": "https://www.dbi-services.com/blog/oracle-multitenant-dictionary-upgrade/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle multitenant dictionary: upgrade.", "relation_aware": false }, { "publication_id": "dbi-services:insert-into-gtt-bulk-with-appendvalues", "database": "Oracle Database", "date": "2015-01-09", "employment_period": "dbi-services-2014", "title": "Insert into GTT: bulk with APPEND_VALUES", "url": "https://www.dbi-services.com/blog/insert-into-gtt-bulk-with-appendvalues/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "And Oracle does not offer an in memory temporary table as other RDBMS do.", "relation_aware": false }, { "publication_id": "dbi-services:stay-with-non-cdb-or-go-to-cdb", "database": "Oracle Database", "date": "2015-01-28", "employment_period": "dbi-services-2014", "title": "Stay with non-CDB or go to CDB?", "url": "https://www.dbi-services.com/blog/stay-with-non-cdb-or-go-to-cdb/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "efficient" ], "critical_signals": [], "evidence_excerpt": "Oracle has made a lot of changes for that and maintaining different code path for the non-CDB and the CDB architecture cannot be efficient.", "relation_aware": false }, { "publication_id": "dbi-services:ioug-collaborate-c15lv", "database": "Oracle Database", "date": "2015-02-03", "employment_period": "dbi-services-2014", "title": "IOUG Collaborate #C15LV", "url": "https://www.dbi-services.com/blog/ioug-collaborate-c15lv/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "The IOUG – Independant Oracle User Group – has a great event each year: the COLLABORATE.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-multitenant-dictionary-rowcache", "database": "Oracle Database", "date": "2015-02-08", "employment_period": "dbi-services-2014", "title": "Oracle multitenant dictionary: rowcache", "url": "https://www.dbi-services.com/blog/oracle-multitenant-dictionary-rowcache/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle multitenant dictionary: rowcache.", "relation_aware": false }, { "publication_id": "dbi-services:never-gather-workload-stats-on-exadata", "database": "Oracle Database", "date": "2015-02-09", "employment_period": "dbi-services-2014", "title": "Never gather WORKLOAD stats on Exadata…", "url": "https://www.dbi-services.com/blog/never-gather-workload-stats-on-exadata/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "benefit" ], "critical_signals": [], "evidence_excerpt": "And direct-path read should be the main i/o path in Exadata as you probably bought that machine to benefit from SmartScan.", "relation_aware": false }, { "publication_id": "dbi-services:is-cdb-stable-now-after-one-patchset-and-two-psu", "database": "Oracle Database", "date": "2015-02-16", "employment_period": "dbi-services-2014", "title": "Is CDB stable after one patchset and two PSU?", "url": "https://www.dbi-services.com/blog/is-cdb-stable-now-after-one-patchset-and-two-psu/", "source": "dbi-services", "evaluation": -2, "positive_weight": 0, "critical_weight": 4, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "System State dumped to trace file /u01/app/oracle/diag/rdbms/cdb/CDB/trace/CDB_diag_19090_20150219225154.trc ORA-1092 : opitsk aborting process 2015-02-19 22:52:00.067000 +01:00 Instance terminated by USER, pid = 19102 You can see the bug number in ‘bug fixed’ and the instance is still terminating after media failure on a PDB datafile.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-compression-availability-and-licensing", "database": "Oracle Database", "date": "2015-03-06", "employment_period": "dbi-services-2014", "title": "Oracle compression, availability and licensing", "url": "https://www.dbi-services.com/blog/oracle-compression-availability-and-licensing/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 8, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "Probably a bug in catfusrg.sql but anyway you don’t need to buy license for that – just by your storage at Oracle.", "relation_aware": false }, { "publication_id": "dbi-services:standard-edition-on-oracle-database-appliance", "database": "Oracle Database", "date": "2015-03-25", "employment_period": "dbi-services-2014", "title": "Standard Edition on Oracle Database Appliance", "url": "https://www.dbi-services.com/blog/standard-edition-on-oracle-database-appliance/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Standard Edition on Oracle Database Appliance.", "relation_aware": false }, { "publication_id": "dbi-services:index-on-truncdate-do-you-still-need-old-index-1", "database": "Oracle Database", "date": "2015-03-27", "employment_period": "dbi-services-2014", "title": "Index on SUBSTR(string,1,n) – do you still need old index?", "url": "https://www.dbi-services.com/blog/index-on-truncdate-do-you-still-need-old-index-1/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Extends an earlier trunc-date finding to substring predicates, showing Oracle can use an index on the full string for range predicates on a substring prefix from 12.1.0.2 onward, without a separate index.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-tuning-silver-bullet-add-an-order-by-to-make-your-query-faster", "database": "Oracle Database", "date": "2015-04-01", "employment_period": "dbi-services-2014", "title": "Oracle tuning silver bullet: add an order by to make your query faster", "url": "https://www.dbi-services.com/blog/oracle-tuning-silver-bullet-add-an-order-by-to-make-your-query-faster/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "faster" ], "critical_signals": [], "evidence_excerpt": "Oracle tuning silver bullet: add an order by to make your query faster.", "relation_aware": false }, { "publication_id": "dbi-services:rac-attack-was-another-great-success-at-c15lv", "database": "Oracle Database", "date": "2015-04-12", "employment_period": "dbi-services-2014", "title": "RAC Attack! was another great success at C15LV", "url": "https://www.dbi-services.com/blog/rac-attack-was-another-great-success-at-c15lv/", "source": "dbi-services", "evaluation": 2, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "excellent" ], "critical_signals": [], "evidence_excerpt": "The organisation way excellent: Organisation by Ludovico Caldara, infrastructure by Erik Benner, food sponsored by OTN, and Oracle software made available on USB sticks thanks to Markus Michalewicz.", "relation_aware": false }, { "publication_id": "dbi-services:variations-on-1m-insert-6-cpu-flame-graph", "database": "Oracle Database", "date": "2015-05-18", "employment_period": "dbi-services-2014", "title": "Variations on 1M insert (6): CPU Flame Graph", "url": "https://www.dbi-services.com/blog/variations-on-1m-insert-6-cpu-flame-graph/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Let’s look for it in ORACLE_HOME/rdbms/admin: $ grep -i \"package.*dbms_random\" $ORACLE_HOME/rdbms/admin/* /home/oracle/app/oracle/product/11204/rdbms/admin/dbmsrand.sql:CREATE OR REPLACE PACKAGE dbms_random AUTHID DEFINER AS /home/oracle/app/oracle/product/11204/rdbms/admin/dbmsrand.sql:CREATE OR REPLACE PACKAGE BODY dbms_random AS So, what is the difference between the 11.2.0.3 and 11.2.0.4 ?", "relation_aware": false }, { "publication_id": "dbi-services:variations-on-1m-rows-insert-1-bulk-insert", "database": "Oracle Database", "date": "2015-05-18", "employment_period": "dbi-services-2014", "title": "Variations on 1M rows insert (1): bulk insert", "url": "https://www.dbi-services.com/blog/variations-on-1m-rows-insert-1-bulk-insert/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "Commit only at the end and we know that in Oracle it’s better not to commit too often.", "relation_aware": false }, { "publication_id": "dbi-services:variations-on-1m-rows-insert-3-timesten", "database": "Oracle Database", "date": "2015-05-18", "employment_period": "dbi-services-2014", "title": "Variations on 1M rows insert (3): TimesTen", "url": "https://www.dbi-services.com/blog/variations-on-1m-rows-insert-3-timesten/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 1, "mixed": true, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "faster", "good" ], "critical_signals": [ "slower side of comparison" ], "evidence_excerpt": "When accepting the risk to have non durable commits the response time was faster on Oracle database because we don’t have to wait for persistence of commits.", "relation_aware": true }, { "publication_id": "dbi-services:flame-graph-for-quick-identification-of-oracle-bug", "database": "Oracle Database", "date": "2015-06-12", "employment_period": "dbi-services-2014", "title": "Flame Graph for quick identification of Oracle bug", "url": "https://www.dbi-services.com/blog/flame-graph-for-quick-identification-of-oracle-bug/", "source": "dbi-services", "evaluation": -2, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "Flame Graph for quick identification of Oracle bug.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-memory-advisors-how-relevant", "database": "Oracle Database", "date": "2015-06-12", "employment_period": "dbi-services-2014", "title": "Oracle memory advisors: how relevant ?", "url": "https://www.dbi-services.com/blog/oracle-memory-advisors-how-relevant/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle memory advisors: how relevant ?.", "relation_aware": false }, { "publication_id": "dbi-services:multithreaded-12c-and-connect-as-sysdba", "database": "Oracle Database", "date": "2015-06-24", "employment_period": "dbi-services-2014", "title": "Multithreaded 12c and ‘connect / as sysdba’", "url": "https://www.dbi-services.com/blog/multithreaded-12c-and-connect-as-sysdba/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "I want to connect locally (not through the listener) so I define a BEQ connection string: $ cat tnsnames.ora BEQ_DEMO11_SYS=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=/u01/app/oracle/product/12102EE/bin/oracle)(ARGV0=oracleDEMO11)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=BEQ)))')(ENVS='ORACLE_HOME=/u01/app/oracle/product/12102EE,ORACLE_SID=DEMO11')) Here is how a beaqueath (PROTOCOL=BEQ) connection is defined.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-database-cloud-service-my-first-trial", "database": "Oracle Database", "date": "2015-06-27", "employment_period": "dbi-services-2014", "title": "Oracle Database Cloud Service – My first trial", "url": "https://www.dbi-services.com/blog/oracle-database-cloud-service-my-first-trial/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "From the cloud.oracle.com/database website, there is Trial only for the ‘Database Schema Service’ so I asked fot it, received an e-mail with connection info and it works: Good.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-log-writer-and-write-ahead-logging", "database": "Oracle Database", "date": "2015-06-28", "employment_period": "dbi-services-2014", "title": "Oracle Log Writer and Write-Ahead-Logging", "url": "https://www.dbi-services.com/blog/oracle-log-writer-and-write-ahead-logging/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Log Writer and Write-Ahead-Logging.", "relation_aware": false }, { "publication_id": "dbi-services:multitenant-vs-schema-based-consolidation", "database": "Oracle Database", "date": "2015-06-30", "employment_period": "dbi-services-2014", "title": "Multitenant vs. schema based consolidation", "url": "https://www.dbi-services.com/blog/multitenant-vs-schema-based-consolidation/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "faster" ], "critical_signals": [], "evidence_excerpt": "Patching the Oracle version for a single application backend is not possible Yes, plugging a PDB into a different version CDB can be faster for those applications that have lot of objects.", "relation_aware": false }, { "publication_id": "dbi-services:configure-the-resource-manager-with-sql-developer", "database": "Oracle Database", "date": "2015-08-23", "employment_period": "dbi-services-2014", "title": "Configure the Resource Manager with SQL Developer", "url": "https://www.dbi-services.com/blog/configure-the-resource-manager-with-sql-developer/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Shows configuring Oracle Resource Manager consumer groups and CPU allocation methods through SQL Developer's DBA view in 12c, since dbconsole no longer exists and EM Express lacks that feature.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-database-cloud-service-dbaas", "database": "Oracle Database", "date": "2015-08-25", "employment_period": "dbi-services-2014", "title": "Oracle Database Cloud Service – DBaaS", "url": "https://www.dbi-services.com/blog/oracle-database-cloud-service-dbaas/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Database Cloud Service – DBaaS.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-cdc-for-datawarehouse-dbvisit-replicate-as-an-alternative", "database": "Oracle Database", "date": "2015-08-26", "employment_period": "dbi-services-2014", "title": "Oracle CDC for Datawarehouse, Dbvisit replicate as an alternative", "url": "https://www.dbi-services.com/blog/oracle-cdc-for-datawarehouse-dbvisit-replicate-as-an-alternative/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "reduced cost, risk, or downtime" ], "critical_signals": [], "evidence_excerpt": "Notes that Oracle's built-in Change Data Capture and Streams are deprecated in favor of GoldenGate, proposing Dbvisit Replicate's redo-based logical replication as a lower-cost alternative for datawarehouse refresh.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-cloud-services-dbaas-and-dbi-services-best-practices", "database": "Oracle Database", "date": "2015-08-27", "employment_period": "dbi-services-2014", "title": "Oracle Cloud Services DBaaS and dbi services best practices", "url": "https://www.dbi-services.com/blog/oracle-cloud-services-dbaas-and-dbi-services-best-practices/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Cloud Services DBaaS and dbi services best practices.", "relation_aware": false }, { "publication_id": "dbi-services:scn-synchronization-in-distributed-transactions", "database": "Oracle Database", "date": "2015-08-27", "employment_period": "dbi-services-2014", "title": "SCN synchronization in distributed transactions", "url": "https://www.dbi-services.com/blog/scn-synchronization-in-distributed-transactions/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "useful" ], "critical_signals": [], "evidence_excerpt": "Explains that Oracle synchronizes SCNs across databases linked in a distributed transaction at each commit, advancing the lowest SCN to match the highest, useful for detecting unexpected db link usage.", "relation_aware": false }, { "publication_id": "dbi-services:slob-in-the-cloud-how-to-check-cloud-services-performance", "database": "Oracle Database", "date": "2015-08-28", "employment_period": "dbi-services-2014", "title": "SLOB in the Cloud: how to check Cloud Services performance", "url": "https://www.dbi-services.com/blog/slob-in-the-cloud-how-to-check-cloud-services-performance/", "source": "dbi-services", "evaluation": 2, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "product-wide", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "excellent", "good" ], "critical_signals": [], "evidence_excerpt": "When it comes to Oracle databases there are 3 ways to test performances: Run an application, or a simulation of an application, such as the excellent SwingBench from Dominic Giles Run low-level calibration tools, such as Orion that simulate database, good when you have no database yet Or run something in the middle, and there is SLOB .", "relation_aware": false }, { "publication_id": "dbi-services:database-cloud-service-performance-cpu", "database": "Oracle Database", "date": "2015-08-30", "employment_period": "dbi-services-2014", "title": "DataBase Cloud Service performance – CPU", "url": "https://www.dbi-services.com/blog/database-cloud-service-performance-cpu/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "Now I have a good benchmark to check if this remains true when the Oracle Cloud Services will be more busy.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-standard-edition-two", "database": "Oracle Database", "date": "2015-09-02", "employment_period": "dbi-services-2014", "title": "Oracle Standard Edition Two", "url": "https://www.dbi-services.com/blog/oracle-standard-edition-two/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "limitation" ], "evidence_excerpt": "Patch 20831110 apply (pdb PDB): SUCCESS logfile: /u01/app/oracle/cfgtoollogs/sqlpatch/20831110/18977826/20831110_apply_SE2_PDB_2015Sep01_21_28_11.log (no errors) SQL Patching tool complete on Tue Sep 1 21:28:17 2015 Thread limitation I’m on a VM with only 4 cores here.", "relation_aware": false }, { "publication_id": "dbi-services:database-cloud-service-performance-network", "database": "Oracle Database", "date": "2015-09-13", "employment_period": "dbi-services-2014", "title": "DataBase Cloud Service performance – Network", "url": "https://www.dbi-services.com/blog/database-cloud-service-performance-network/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Sets up SSH port-forwarding of 1521 to reach an Oracle Database Cloud Service instance, measuring roughly 90ms latency from Switzerland to the Amsterdam region versus 240ms to the US region.", "relation_aware": false }, { "publication_id": "dbi-services:do-you-use-sql-plan-baselines", "database": "Oracle Database", "date": "2015-09-25", "employment_period": "dbi-services-2014", "title": "Do you use SQL Plan Baselines?", "url": "https://www.dbi-services.com/blog/do-you-use-sql-plan-baselines/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "But remember that Oracle has provided plan stability features for a long time, and they think we use it when they introduce all adaptive features.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-and-analytic-queries-before-in-memory-option", "database": "Oracle Database", "date": "2015-10-04", "employment_period": "dbi-services-2014", "title": "Oracle and Analytic Queries before In-Memory option", "url": "https://www.dbi-services.com/blog/oracle-and-analytic-queries-before-in-memory-option/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle and Analytic Queries before In-Memory option.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-in-memory-column-store-for-business-intelligence-at-swissbiday", "database": "Oracle Database", "date": "2015-10-06", "employment_period": "dbi-services-2014", "title": "Oracle In-Memory Column Store for Business Intelligence at #swissbiday", "url": "https://www.dbi-services.com/blog/oracle-in-memory-column-store-for-business-intelligence-at-swissbiday/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle In-Memory Column Store for Business Intelligence at #swissbiday.", "relation_aware": false }, { "publication_id": "dbi-services:mapping-in-memory-cu-to-values-imcu-pruning", "database": "Oracle Database", "date": "2015-10-13", "employment_period": "dbi-services-2014", "title": "Mapping In-memory CU to values: IMCU pruning", "url": "https://www.dbi-services.com/blog/mapping-in-memory-cu-to-values-imcu-pruning/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Uses V$IM_COL_CU to show how each In-Memory Compression Unit stores per-column min and max values enabling IMCU pruning and skip filtering, similar in effect to Exadata Storage Indexes.", "relation_aware": false }, { "publication_id": "dbi-services:11-2-0-4-support-dont-worry-until-2017", "database": "Oracle Database", "date": "2015-10-16", "employment_period": "dbi-services-2014", "title": "11.2.0.4 support? Don’t worry until 2017", "url": "https://www.dbi-services.com/blog/11-2-0-4-support-dont-worry-until-2017/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Clarifies Oracle's premier, extended, and sustaining support tiers, confirming 11.2.0.4 keeps premier support at no extra cost until May 2017 without assuming it is more stable than 12.1.0.2.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-cloud-service-my-first-outage", "database": "Oracle Database", "date": "2015-10-18", "employment_period": "dbi-services-2014", "title": "Oracle Cloud Service – my first outage", "url": "https://www.dbi-services.com/blog/oracle-cloud-service-my-first-outage/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Cloud Service – my first outage.", "relation_aware": false }, { "publication_id": "dbi-services:you-are-in-standard-edition-when-to-worry", "database": "Oracle Database", "date": "2015-10-18", "employment_period": "dbi-services-2014", "title": "You are in Standard Edition, when to worry?", "url": "https://www.dbi-services.com/blog/you-are-in-standard-edition-when-to-worry/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle has very short sentences to define limitations that are not so easy to understand.", "relation_aware": false }, { "publication_id": "dbi-services:ibm-bluemix-database-cloud-service-my-first-trial", "database": "Db2", "date": "2015-10-31", "employment_period": "dbi-services-2014", "title": "IBM Bluemix Database Cloud Service – My first trial", "url": "https://www.dbi-services.com/blog/ibm-bluemix-database-cloud-service-my-first-trial/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "Whatever the compatibility level is, and DB2 LUW 10 has very good compatibility when migrating from Oracle, you can’t move to another RDBMS whithout changing code.", "relation_aware": false }, { "publication_id": "dbi-services:ibm-bluemix-database-cloud-service-my-first-trial", "database": "Oracle Database", "date": "2015-10-31", "employment_period": "dbi-services-2014", "title": "IBM Bluemix Database Cloud Service – My first trial", "url": "https://www.dbi-services.com/blog/ibm-bluemix-database-cloud-service-my-first-trial/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "First hands-on trial of IBM Bluemix's SQL Database service, loading EMP and DEPT CSV exports from Oracle's SCOTT schema through the web console's default import options.", "relation_aware": false }, { "publication_id": "dbi-services:rman-channels-in-rac", "database": "Oracle Database", "date": "2015-11-05", "employment_period": "dbi-services-2014", "title": "RMAN channels in RAC", "url": "https://www.dbi-services.com/blog/rman-channels-in-rac/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Explains allocating RMAN channels across multiple RAC nodes to exceed a single node's HBA throughput ceiling against a 3GB/s XtremIO array, noting an unusual need to disable cell offload processing even off Exadata.", "relation_aware": false }, { "publication_id": "dbi-services:interested-in-a-deep-dive-of-logical-replication", "database": "Oracle Database", "date": "2015-11-11", "employment_period": "dbi-services-2014", "title": "Interested in a deep dive of logical replication?", "url": "https://www.dbi-services.com/blog/interested-in-a-deep-dive-of-logical-replication/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Announces a hands-on RepAttack session at DOAG2015 where attendees install a Dbvisit Replicate trial with Oracle XE on their own laptop from a distributed USB stick, mirroring the RAC Attack format.", "relation_aware": false }, { "publication_id": "dbi-services:cloud-control-12c-on-your-laptop", "database": "Oracle Database", "date": "2015-11-13", "employment_period": "dbi-services-2014", "title": "Cloud Control 12c on your laptop", "url": "https://www.dbi-services.com/blog/cloud-control-12c-on-your-laptop/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Explains downloading Oracle's prebuilt multi-file OVA for Enterprise Manager Cloud Control 12.1.0.5 with an 11.2.0.4 repository, concatenating the split ova parts before importing into VirtualBox.", "relation_aware": false }, { "publication_id": "soug:SOUG_2015_ExadataSmartScan_Part1", "database": "Oracle Database", "date": "2015-12-11", "employment_period": "dbi-services-2014", "title": "Que gagneriez-vous en passant sur Exadata? Partie I - Mesurez l'activite eligible au SmartScan", "url": "https://www.soug.ch", "source": "soug", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "low", "summary_source": "title only", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Que gagneriez-vous en passant sur Exadata?", "relation_aware": false }, { "publication_id": "dbi-services:ocm-12c-preparation-documentation", "database": "Oracle Database", "date": "2015-12-18", "employment_period": "dbi-services-2014", "title": "OCM 12c preparation: documentation", "url": "https://www.dbi-services.com/blog/ocm-12c-preparation-documentation/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [ "lack" ], "evidence_excerpt": "Maps each OCM 12c upgrade exam topic to the exact Oracle documentation book and chapter to search during the exam, since GUI tools may lack sufficient built-in help under exam conditions.", "relation_aware": false }, { "publication_id": "dbi-services:pdb-snapshot-copy-for-continuous-integration-testing", "database": "Oracle Database", "date": "2016-01-01", "employment_period": "dbi-services-2014", "title": "PDB snapshot copy for continuous integration testing", "url": "https://www.dbi-services.com/blog/pdb-snapshot-copy-for-continuous-integration-testing/", "source": "dbi-services", "evaluation": 0, "positive_weight": 1, "critical_weight": 1, "mixed": true, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "good" ], "critical_signals": [ "expensive" ], "evidence_excerpt": "You may find that expensive, but think about what it can bring you: you can provision multiple test environments and run your test in parallel, you same lot of storage, you can provision one database for each developer without a big overhead,… Cloud The Oracle cloud service is a good solution for those environments.", "relation_aware": false }, { "publication_id": "dbi-services:pdb-snapshot-using-dbms_dnfs-clonedb_renamefile", "database": "Oracle Database", "date": "2016-01-02", "employment_period": "dbi-services-2014", "title": "PDB Snapshot using dbms_dnfs.clonedb_renamefile", "url": "https://www.dbi-services.com/blog/pdb-snapshot-using-dbms_dnfs-clonedb_renamefile/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "So the only thing I have to do to start again is restore those small .cow files: 18:34:06 SQL> host tar -Pxvf /tmp/pdbcow.tar /u02/app/oracle/oradata/CDB/PDB/example01.dbf.cow /u02/app/oracle/oradata/CDB/PDB/SAMPLE_SCHEMA_users01.dbf.cow /u02/app/oracle/oradata/CDB/PDB/sysaux01.dbf.cow /u02/app/oracle/oradata/CDB/PDB/system01.dbf.cow 18:34:14 SQL> which is very fast, and it’s ready to start again with: create pluggab", "relation_aware": false }, { "publication_id": "dbi-services:ofe-optimizer-features-enable", "database": "Oracle Database", "date": "2016-01-21", "employment_period": "dbi-services-2014", "title": "OFE – Optimizer Features Enable", "url": "https://www.dbi-services.com/blog/ofe-optimizer-features-enable/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Well in Oracle this idea is not only for the optimizer, you can also choose the compatible version for the database: store it compatible with a previous version.", "relation_aware": false }, { "publication_id": "dbi-services:awrrpt-and-spreport-in-multitenant", "database": "Oracle Database", "date": "2016-01-27", "employment_period": "dbi-services-2014", "title": "awrrpt and spreport in multitenant", "url": "https://www.dbi-services.com/blog/awrrpt-and-spreport-in-multitenant/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Before going to the detail, I would like to say here that Oracle Midland is a great meetup.", "relation_aware": false }, { "publication_id": "dbi-services:the-taboo-of-underscore-parameters", "database": "Oracle Database", "date": "2016-02-21", "employment_period": "dbi-services-2014", "title": "The taboo of ‘underscore parameters’", "url": "https://www.dbi-services.com/blog/the-taboo-of-underscore-parameters/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "excellent" ], "critical_signals": [], "evidence_excerpt": "There is also an excellent source of information about bugs encountered at Oracle customers, reasons, workarounds and fixes.", "relation_aware": false }, { "publication_id": "dbi-services:gtt-in-exadata-are-eligible-to-smartscan", "database": "Oracle Database", "date": "2016-03-07", "employment_period": "dbi-services-2014", "title": "GTT in Exadata are eligible to SmartScan", "url": "https://www.dbi-services.com/blog/gtt-in-exadata-are-eligible-to-smartscan/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "GTT in Exadata are eligible to SmartScan.", "relation_aware": false }, { "publication_id": "dbi-services:12c-multitenant-pdb-spfile-parameters-for-standby-database", "database": "Oracle Database", "date": "2016-03-16", "employment_period": "dbi-services-2014", "title": "12c Multitenant: PDB spfile parameters for standby database", "url": "https://www.dbi-services.com/blog/12c-multitenant-pdb-spfile-parameters-for-standby-database/", "source": "dbi-services", "evaluation": -2, "positive_weight": 0, "critical_weight": 6, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "SQL> select db_uniq_name,pdb_uid,sid,name,value$ from pdb_spfile$; DB_UNIQ PDB_UID SID NAME VALUE ------- ---------- --- -------------------------- ----- CDB_ADG 4058593923 * optimizer_dynamic_sampling 8 If I try it again, I’ll get a “ORA-32010: cannot find entry to delete in SPFILE” Bug This is a bug and I’ll put the bug number as soon as My Oracle Support engineer dares to reproduce that 3 lines test-case.", "relation_aware": false }, { "publication_id": "dbi-services:how-to-check-multitenant-option-feature-usage", "database": "Oracle Database", "date": "2016-03-27", "employment_period": "dbi-services-2014", "title": "How to check Multitenant Option feature usage", "url": "https://www.dbi-services.com/blog/how-to-check-multitenant-option-feature-usage/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Runs DBMS_FEATURE_USAGE_INTERNAL.EXEC_DB_USAGE_SAMPLING manually and queries DBA_FEATURE_USAGE_STATISTICS to show even a single-tenant database records usage under 'Oracle Pluggable Databases'.", "relation_aware": false }, { "publication_id": "dbi-services:cloning-a-pdb-to-the-oracle-cloud-service", "database": "Oracle Database", "date": "2016-03-30", "employment_period": "dbi-services-2014", "title": "Cloning a PDB to the Oracle Cloud Service", "url": "https://www.dbi-services.com/blog/cloning-a-pdb-to-the-oracle-cloud-service/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Cloning a PDB to the Oracle Cloud Service.", "relation_aware": false }, { "publication_id": "dbi-services:creer-une-base-oracle-sur-le-cloud-en-quelques-clicks", "database": "Oracle Database", "date": "2016-04-03", "employment_period": "dbi-services-2014", "title": "Créer une base Oracle sur le Cloud en quelques clicks", "url": "https://www.dbi-services.com/blog/creer-une-base-oracle-sur-le-cloud-en-quelques-clicks/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Créer une base Oracle sur le Cloud en quelques clicks.", "relation_aware": false }, { "publication_id": "dbi-services:lost-in-the-cloud-my-cloud-vs-my-services", "database": "Oracle Database", "date": "2016-04-03", "employment_period": "dbi-services-2014", "title": "Lost in the Cloud? My Cloud vs. My Services", "url": "https://www.dbi-services.com/blog/lost-in-the-cloud-my-cloud-vs-my-services/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Distinguishes the Oracle Cloud 'My Account' company-level subscription dashboard from the 'My Services' administrator console used for provisioning and monitoring, and how to navigate between them.", "relation_aware": false }, { "publication_id": "dbi-services:fixed-table-automatic-statistic-gathering-in-12c", "database": "Oracle Database", "date": "2016-04-04", "employment_period": "dbi-services-2014", "title": "Fixed table automatic statistic gathering in 12c", "url": "https://www.dbi-services.com/blog/fixed-table-automatic-statistic-gathering-in-12c/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "excellent" ], "critical_signals": [], "evidence_excerpt": "Documentation First you may have a doubt because the Best Practices for Gathering Optimizer Statistics with Oracle Database 12c white paper, which is by the way excellent, states the following: The automatic statistics gathering job does not gather fixed object statistics.", "relation_aware": false }, { "publication_id": "dbi-services:single-tenant-vs-non-cdb-no-reason-to-refuse-it", "database": "Oracle Database", "date": "2016-04-09", "employment_period": "dbi-services-2014", "title": "Single-Tenant vs. non-CDB: no reason to refuse it", "url": "https://www.dbi-services.com/blog/single-tenant-vs-non-cdb-no-reason-to-refuse-it/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Measures the extra datafile storage and process overhead of a single-tenant CDB against an equivalent non-CDB database on identical Oracle Cloud VMs to show the multitenant overhead is small.", "relation_aware": false }, { "publication_id": "dbi-services:transparently-externalize-blob-to-bfile", "database": "Oracle Database", "date": "2016-04-12", "employment_period": "dbi-services-2014", "title": "Transparently externalize BLOB to BFILE", "url": "https://www.dbi-services.com/blog/transparently-externalize-blob-to-bfile/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "1 oracle oinstall 46156 Mar 25 17:20 adrci And here is my table: SQL> select id,filename,dbms_lob.getlength(doc),external_doc from DEMOTAB; ID FILENAME DBMS_LOB.GETLENGTH(DOC) EXTERNAL_DOC ---------- -------------------- ----------------------- ---------------------------------------- 1 acfsroot bfilename('DEMODIR', 'acfsroot') 2 adapters bfilename('DEMODIR', 'adapters') 3 adrci 46156 bfilename(NULL) You see that fir", "relation_aware": false }, { "publication_id": "dbi-services:a-short-glance-at-attunity-replicate", "database": "Oracle Database", "date": "2016-04-16", "employment_period": "dbi-services-2014", "title": "A short glance at Attunity replicate", "url": "https://www.dbi-services.com/blog/a-short-glance-at-attunity-replicate/", "source": "dbi-services", "evaluation": 0, "positive_weight": 1, "critical_weight": 1, "mixed": true, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "powerful" ], "critical_signals": [ "lack" ], "evidence_excerpt": "When you have heterogeneous sources (not only Oracle) there is Oracle Golden Gate with very powerful possibilities, but maybe not an easy learning curve because of lack of simple GUI and setup wizard.", "relation_aware": false }, { "publication_id": "dbi-services:io-performance-predictability-in-the-cloud", "database": "Oracle Database", "date": "2016-04-26", "employment_period": "dbi-services-2014", "title": "I/O Performance predictability in the Cloud", "url": "https://www.dbi-services.com/blog/io-performance-predictability-in-the-cloud/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Shows a SLOB workload on Oracle Cloud Service IO whose runtime unexpectedly grows past its fixed WORK_LOOP over several hours one Sunday, traced with ASH visualization to rising I/O latency.", "relation_aware": false }, { "publication_id": "dbi-services:can-you-become-a-paas-provider-for-an-oracle-database-service", "database": "Oracle Database", "date": "2016-04-28", "employment_period": "dbi-services-2014", "title": "Can you become a PaaS provider for an Oracle Database service?", "url": "https://www.dbi-services.com/blog/can-you-become-a-paas-provider-for-an-oracle-database-service/", "source": "dbi-services", "evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 16, "positive_signals": [ "better", "good" ], "critical_signals": [], "evidence_excerpt": "Or even better: you want to provide an Oracle Database as a Service.", "relation_aware": false }, { "publication_id": "dbi-services:testing-oracle-on-exoscale-ch", "database": "Oracle Database", "date": "2016-04-28", "employment_period": "dbi-services-2014", "title": "Testing Oracle on exoscale.ch", "url": "https://www.dbi-services.com/blog/testing-oracle-on-exoscale-ch/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Testing Oracle on exoscale.ch.", "relation_aware": false }, { "publication_id": "dbi-services:data-guard-as-a-service", "database": "Oracle Database", "date": "2016-05-20", "employment_period": "dbi-services-2014", "title": "Data Guard as a Service", "url": "https://www.dbi-services.com/blog/data-guard-as-a-service/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Shows enabling the 'Standby Database with Data Guard' checkbox on Oracle Public Cloud DBaaS creation, provisioning two VMs and an automatically configured broker achieving SYNC transport.", "relation_aware": false }, { "publication_id": "dbi-services:sys-password-on-oracle-cloud-service-managed-database", "database": "Oracle Database", "date": "2016-05-21", "employment_period": "dbi-services-2014", "title": "SYS password on Oracle Cloud Service managed database", "url": "https://www.dbi-services.com/blog/sys-password-on-oracle-cloud-service-managed-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SYS password on Oracle Cloud Service managed database.", "relation_aware": false }, { "publication_id": "dbi-services:which-patchset-for-12-1-0-2", "database": "Oracle Database", "date": "2016-05-24", "employment_period": "dbi-services-2014", "title": "Which patchset for 12.1.0.2 ?", "url": "https://www.dbi-services.com/blog/which-patchset-for-12-1-0-2/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "This patchset provides the binaries to install the Standard Edition 2 of Oracle Database as: p21419221_121020_platform_3of10.zip and p21419221_121020_platform_4of10.zip This files are only for Standard Edition 2 as the other choice is grayed: However, Enterprise Edition is still available because all others files in this patchset 21419221 are the same as in the 17694377 so the installation of the Enterprise Edition o", "relation_aware": false }, { "publication_id": "dbi-services:db_flashback_retention_target-may-hang-your-database", "database": "Oracle Database", "date": "2016-05-26", "employment_period": "dbi-services-2014", "title": "DB_FLASHBACK_RETENTION_TARGET may hang your database", "url": "https://www.dbi-services.com/blog/db_flashback_retention_target-may-hang-your-database/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [ "bad" ], "evidence_excerpt": "************************************************************************ Thu May 26 07:43:01 2016 Errors in file /u01/app/oracle/diag/rdbms/cdb_02/CDB/trace/CDB_arc1_5612.trc: ORA-19809: limit exceeded for recovery files ORA-19804: cannot reclaim 1073741824 bytes disk space from 53687091200 limit Thu May 26 07:43:46 2016 This blocks the standby with a big gap and this may have bad consequence on primary availability ", "relation_aware": false }, { "publication_id": "dbi-services:oracle-on-windows-server-core", "database": "Oracle Database", "date": "2016-06-10", "employment_period": "dbi-services-2014", "title": "Oracle on Windows Server Core", "url": "https://www.dbi-services.com/blog/oracle-on-windows-server-core/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle on Windows Server Core.", "relation_aware": false }, { "publication_id": "dbi-services:large-pages-on-windows", "database": "Oracle Database", "date": "2016-06-16", "employment_period": "dbi-services-2014", "title": "Large Pages on Windows", "url": "https://www.dbi-services.com/blog/large-pages-on-windows/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Shows enabling ORA_LPENABLE at the instance level via Windows registry keys, stopping and restarting the Oracle service to confirm large pages apply without affecting a shared ASM instance.", "relation_aware": false }, { "publication_id": "dbi-services:12c-online-datafile-move-and-resize", "database": "Oracle Database", "date": "2016-06-18", "employment_period": "dbi-services-2014", "title": "12c online datafile move and resize", "url": "https://www.dbi-services.com/blog/12c-online-datafile-move-and-resize/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "The move is continuing and at the point it reaches a block above the initial size the target file is resized: [oracle@CDB]$ ls -l /u0?/app/oracle/oradata/CDB/sysaux* -rw-r----- 1 oracle oinstall 19398664192 Jun 18 15:18 /u02/app/oracle/oradata/CDB/sysaux011460.dbf -rw-r----- 1 oracle oinstall 19398664192 Jun 18 15:18 /u03/app/oracle/oradata/CDB/sysaux014244.dbf And finally, the move is completed without any problem: ", "relation_aware": false }, { "publication_id": "dbi-services:oda-x6-2s-2m-for-ee-and-se", "database": "Oracle Database", "date": "2016-06-21", "employment_period": "dbi-services-2014", "title": "ODA X6-2S and ODA X6-2M for EE and SE2", "url": "https://www.dbi-services.com/blog/oda-x6-2s-2m-for-ee-and-se/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Announces the ODA X6-2S and X6-2M as the first Oracle Database Appliance models supporting Standard Edition 2 on dedicated hardware, aimed at customers previously limited to a Guest VM install.", "relation_aware": false }, { "publication_id": "dbi-services:question-is-upgrade-now-to-12-1-0-2-or-wait-for-12-2", "database": "Oracle Database", "date": "2016-06-23", "employment_period": "dbi-services-2014", "title": "Question is: upgrade now to 12.1.0.2 or wait for 12.2 ?", "url": "https://www.dbi-services.com/blog/question-is-upgrade-now-to-12-1-0-2-or-wait-for-12-2/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "We will have to learn 12.2 features and test them before upgrading our databases, and the Oracle Public Cloud is good for that.", "relation_aware": false }, { "publication_id": "dbi-services:compare-source-and-target-in-a-dbvisit-replication", "database": "Oracle Database", "date": "2016-07-05", "employment_period": "dbi-services-2014", "title": "Compare source and target in a Dbvisit replication", "url": "https://www.dbi-services.com/blog/compare-source-and-target-in-a-dbvisit-replication/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "If your target is not Oracle, then there are good chances that you cannot do that kind of ‘as of’ query which means that you need to lock the table on source for the time you compare.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-multitenant-feature-name", "database": "Oracle Database", "date": "2016-07-10", "employment_period": "dbi-services-2014", "title": "Oracle Multitenant feature name", "url": "https://www.dbi-services.com/blog/oracle-multitenant-feature-name/", "source": "dbi-services", "evaluation": -1, "positive_weight": 1, "critical_weight": 2, "mixed": true, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "good" ], "critical_signals": [ "bug" ], "evidence_excerpt": "Well, if you look at the first patchset of 12 c R1, 12.1.0.2, you will see the old name ‘Oracle Pluggable Databases’ but this is a bug ( Patch 20718081 changes back the name).", "relation_aware": false }, { "publication_id": "dbi-services:nulls-in-composite-keys", "database": "Oracle Database", "date": "2016-07-12", "employment_period": "dbi-services-2014", "title": "Nulls in composite keys", "url": "https://www.dbi-services.com/blog/nulls-in-composite-keys/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "More detail about the other match types in Oracle Development Guide .", "relation_aware": false }, { "publication_id": "dbi-services:oracle-public-cloud-patch-conflict", "database": "Oracle Database", "date": "2016-07-13", "employment_period": "dbi-services-2014", "title": "Oracle Public Cloud patch conflict", "url": "https://www.dbi-services.com/blog/oracle-public-cloud-patch-conflict/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Public Cloud patch conflict.", "relation_aware": false }, { "publication_id": "dbi-services:oda-x-6-log-file-sync-with-nvme-flash", "database": "Oracle Database", "date": "2016-07-21", "employment_period": "dbi-services-2014", "title": "ODA X-6 log file sync with NVMe flash", "url": "https://www.dbi-services.com/blog/oda-x-6-log-file-sync-with-nvme-flash/", "source": "dbi-services", "evaluation": 2, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "This is a great opportunity for small customers with few Oracle databases in Enterprise Edition or Standard Edition.", "relation_aware": false }, { "publication_id": "dbi-services:redo-log-block-size-on-oda", "database": "Oracle Database", "date": "2016-07-22", "employment_period": "dbi-services-2014", "title": "Redo log block size on ODA X6 all flash", "url": "https://www.dbi-services.com/blog/redo-log-block-size-on-oda/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "benefit" ], "critical_signals": [], "evidence_excerpt": "On the Oracle Database Appliance, the redo logs are on Flash storage (and with X6 everything is on Flash storage) so you may wonder if we can benefit from 4k redo blocksize.", "relation_aware": false }, { "publication_id": "dbi-services:large-pages-and-memory_target-on-windows", "database": "Oracle Database", "date": "2016-07-27", "employment_period": "dbi-services-2014", "title": "Large Pages and MEMORY_TARGET on Windows", "url": "https://www.dbi-services.com/blog/large-pages-and-memory_target-on-windows/", "source": "dbi-services", "evaluation": 2, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "benefit", "good" ], "critical_signals": [], "evidence_excerpt": "In Oracle, because of the threaded architecture, it’s not a requirement but in my opinion it’s still a good idea to differentiate those memory areas that are so different: SGA: one area allocated at startup, preferentially from large pages PGA: variable size areas allocated and de-allocated by sessions If you have more than few GB on your server, you should size SGA and PGA independently and benefit from large pages ", "relation_aware": false }, { "publication_id": "dbi-services:exadata-x-5-bare-metal-vs-ovm", "database": "Oracle Database", "date": "2016-07-29", "employment_period": "dbi-services-2014", "title": "Exadata X-5 Bare Metal vs. OVM performance", "url": "https://www.dbi-services.com/blog/exadata-x-5-bare-metal-vs-ovm/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Exadata X-5 Bare Metal vs.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-serializable-is-not-serializable", "database": "Oracle Database", "date": "2016-07-30", "employment_period": "dbi-services-2014", "title": "Oracle serializable is not serializable", "url": "https://www.dbi-services.com/blog/oracle-serializable-is-not-serializable/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle serializable is not serializable.", "relation_aware": false }, { "publication_id": "dbi-services:exadata-x-5-bare-metal-vs-ovm-load-testing", "database": "Oracle Database", "date": "2016-07-31", "employment_period": "dbi-services-2014", "title": "Exadata X-5 Bare Metal vs. OVM load testing", "url": "https://www.dbi-services.com/blog/exadata-x-5-bare-metal-vs-ovm-load-testing/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Exadata X-5 Bare Metal vs.", "relation_aware": false }, { "publication_id": "dbi-services:unplugged-pluggable-databases", "database": "Oracle Database", "date": "2016-08-15", "employment_period": "dbi-services-2014", "title": "Unplugged pluggable databases", "url": "https://www.dbi-services.com/blog/unplugged-pluggable-databases/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Critiques the Oracle documentation's USB-stick illustration of pluggable databases, arguing CDB$ROOT, PDB$SEED and user PDBs are all containers plugged into the CDB, not into CDB$ROOT.", "relation_aware": false }, { "publication_id": "dbi-services:audit_sys_operations-and-top-level-operation", "database": "Oracle Database", "date": "2016-08-23", "employment_period": "dbi-services-2014", "title": "AUDIT_SYS_OPERATIONS and top-level operation", "url": "https://www.dbi-services.com/blog/audit_sys_operations-and-top-level-operation/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "The others have no terminal: [oracle@CDB adump]$ grep -l \"^CLIENT TERMINAL:\\[0\\]\" CDB_ora_*_20160823*aud | wc -l 8182 Expected feature It’s not a bug.", "relation_aware": false }, { "publication_id": "dbi-services:multitenant-thin-provisioning-pdb-snapshots-on-acfs", "database": "Oracle Database", "date": "2016-09-06", "employment_period": "dbi-services-2014", "title": "Multitenant thin provisioning: PDB snapshots on ACFS", "url": "https://www.dbi-services.com/blog/multitenant-thin-provisioning-pdb-snapshots-on-acfs/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "But then, storage vendors and other providers came with snapshots, compression and thin provisioning and Oracle had to answer: they implemented those storage features in ACFS and allowed database files on it.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-sql-new-feature-listagg-overflow", "database": "Oracle Database", "date": "2016-09-19", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2 SQL new feature: LISTAGG overflow", "url": "https://www.dbi-services.com/blog/oracle-12cr2-sql-new-feature-listagg-overflow/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2 SQL new feature: LISTAGG overflow.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-database-12-2-pdbaas", "database": "Oracle Database", "date": "2016-09-19", "employment_period": "dbi-services-2014", "title": "Oracle Database 12.2 – PDBaaS", "url": "https://www.dbi-services.com/blog/oracle-database-12-2-pdbaas/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Database 12.2 – PDBaaS.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-long-identifiers", "database": "Oracle Database", "date": "2016-09-20", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2 Long Identifiers", "url": "https://www.dbi-services.com/blog/oracle-12cr2-long-identifiers/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2 Long Identifiers.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-optimizer-adaptive-statistics", "database": "Oracle Database", "date": "2016-09-20", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2 Optimizer Adaptive Statistics", "url": "https://www.dbi-services.com/blog/oracle-12cr2-optimizer-adaptive-statistics/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "Of course, Oracle product managers listen to feedbacks, ensure to provide workarounds or fixes and make things better for next release.", "relation_aware": false }, { "publication_id": "dbi-services:ravello", "database": "Oracle Database", "date": "2016-09-20", "employment_period": "dbi-services-2014", "title": "Ravello", "url": "https://www.dbi-services.com/blog/ravello/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Describes Ravello, acquired by Oracle earlier that year, as a nested-virtualization layer that imports VMware VM ecosystems and reproduces their private network, including original IP addresses.", "relation_aware": false }, { "publication_id": "dbi-services:modern-software-architecture-what-is-a-database", "database": "Oracle Database", "date": "2016-09-24", "employment_period": "dbi-services-2014", "title": "Modern software architecture – what is a database?", "url": "https://www.dbi-services.com/blog/modern-software-architecture-what-is-a-database/", "source": "dbi-services", "evaluation": 2, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "excellent", "good" ], "critical_signals": [], "evidence_excerpt": "You have begin – exception – end blocks, you declare all variables, you can be modular with procedures and inline procedures, you separate signature and body, you have very good IDE, excellent debugger and easy profiler,… and you can run it on Oracle XE which is free.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-is_rolling_invalid-in-vsql", "database": "Oracle Database", "date": "2016-09-25", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: IS_ROLLING_INVALID in V$SQL", "url": "https://www.dbi-services.com/blog/oracle-12cr2-is_rolling_invalid-in-vsql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2: IS_ROLLING_INVALID in V$SQL.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-ddl-deferred-invalidation", "database": "Oracle Database", "date": "2016-10-02", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: DDL deferred invalidation", "url": "https://www.dbi-services.com/blog/oracle-12cr2-ddl-deferred-invalidation/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2: DDL deferred invalidation.", "relation_aware": false }, { "publication_id": "dbi-services:12c-online-move-datafile-in-same-filesystem", "database": "Oracle Database", "date": "2016-11-02", "employment_period": "dbi-services-2014", "title": "12c online move datafile in same filesystem.", "url": "https://www.dbi-services.com/blog/12c-online-move-datafile-in-same-filesystem/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Uses strace to contrast a plain Linux 'mv' within a filesystem, a fast rename() with no copy, against Oracle's 12c online datafile move, which always physically copies even on the same filesystem.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-public-cloud-create-a-database-from-command-line", "database": "Oracle Database", "date": "2016-11-07", "employment_period": "dbi-services-2014", "title": "Oracle Public Cloud: create a database from command line", "url": "https://www.dbi-services.com/blog/oracle-public-cloud-create-a-database-from-command-line/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Public Cloud: create a database from command line.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-multitenant-local-undo", "database": "Oracle Database", "date": "2016-11-08", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2 multitenant: Local UNDO", "url": "https://www.dbi-services.com/blog/oracle-12cr2-multitenant-local-undo/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2 multitenant: Local UNDO.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-plsql-new-feature-tnsping-from-the-database", "database": "Oracle Database", "date": "2016-11-08", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2 PL/SQL new feature: TNSPING from the database", "url": "https://www.dbi-services.com/blog/oracle-12cr2-plsql-new-feature-tnsping-from-the-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 13, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2 PL/SQL new feature: TNSPING from the database.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-has-new-sqlplus-features", "database": "Oracle Database", "date": "2016-11-11", "employment_period": "dbi-services-2014", "title": "12cR2 has new SQL*Plus features", "url": "https://www.dbi-services.com/blog/12cr2-has-new-sqlplus-features/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 10, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Let set which settings are different: [oracle@OPC122 ~]$ sqlplus -s / as sysdba <<< \"store set a.txt replace\" Wrote file a.txt [oracle@OPC122 ~]$ sqlplus -s -F / as sysdba <<< \"store set b.txt replace\" Wrote file b.txt [oracle@OPC122 ~]$ diff a.txt b.txt 3c3 set arraysize 100 31c31 set lobprefetch 16384 46c46 set rowprefetch 2 59c59 set statementcache 20 Those settings avoid roundtrips and unnecessary work.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-max_pdbs", "database": "Oracle Database", "date": "2016-11-11", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: MAX_PDBS", "url": "https://www.dbi-services.com/blog/oracle-12cr2-max_pdbs/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 3, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [ "bad", "bug" ], "evidence_excerpt": "12:18:28 SQL> create pluggable database PDB1 admin user pdbadmin identified by oracle; create pluggable database PDB1 admin user pdbadmin identified by oracle * ERROR at line 1: ORA-65010: maximum number of pluggable databases created Probably a small bug there.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-pluggable-database-relocation", "database": "Oracle Database", "date": "2016-11-11", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: Pluggable database relocation", "url": "https://www.dbi-services.com/blog/oracle-12cr2-pluggable-database-relocation/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "23:41:14 (opc1)CDB1 SQL> commit; ERROR: ORA-03114: not connected to ORACLE It’s a good occasion to look at the traces.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-single-tenant-multitenant-features-for-all-editions", "database": "Oracle Database", "date": "2016-11-14", "employment_period": "dbi-services-2014", "title": "12cR2 Single-Tenant: Multitenant Features for All Editions", "url": "https://www.dbi-services.com/blog/12cr2-single-tenant-multitenant-features-for-all-editions/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Shares Oracle Open World slides arguing that since non-CDB is deprecated, Single-Tenant still brings dictionary separation, PDB cloning, and metadata links to editions without the option.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-upgrade-by-unplugplug-in-the-oracle-cloud-service", "database": "Oracle Database", "date": "2016-11-19", "employment_period": "dbi-services-2014", "title": "12cR2: Upgrade by unplug/plug in the Oracle Cloud Service", "url": "https://www.dbi-services.com/blog/12cr2-upgrade-by-unplugplug-in-the-oracle-cloud-service/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "12cR2: Upgrade by unplug/plug in the Oracle Cloud Service.", "relation_aware": false }, { "publication_id": "dbi-services:encryption-in-oracle-public-cloud", "database": "Oracle Database", "date": "2016-11-29", "employment_period": "dbi-services-2014", "title": "Encryption in Oracle Public Cloud", "url": "https://www.dbi-services.com/blog/encryption-in-oracle-public-cloud/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "This parameter has been introduced in 12.2 and has been backported to 11.2.0.4 and 12.1.0.2 with bug 21281607 that is applied on any Oracle Public Cloud DBaaS instance.", "relation_aware": false }, { "publication_id": "dbi-services:histograms-on-character-strings-between-11-2-0-3-and-11-2-0-4", "database": "Oracle Database", "date": "2016-11-30", "employment_period": "dbi-services-2014", "title": "Histograms on character strings between 11.2.0.3 and 11.2.0.4", "url": "https://www.dbi-services.com/blog/histograms-on-character-strings-between-11-2-0-3-and-11-2-0-4/", "source": "dbi-services", "evaluation": 2, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "excellent" ], "critical_signals": [], "evidence_excerpt": "Oracle Database has lot of ways to understand what happens, from the debugging tools provided with the software, and from the excellent literature about it.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-statistics-advisor", "database": "Oracle 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"evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 10, "positive_signals": [ "great", "powerful" ], "critical_signals": [], "evidence_excerpt": "In addition to that, Oracle Press asked to Arup Nanda to do an additional review which was great because Arup has experience about book writing.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-awr-views-in-multitenant", "database": "Oracle Database", "date": "2016-12-19", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: AWR views in multitenant", "url": "https://www.dbi-services.com/blog/oracle-12cr2-awr-views-in-multitenant/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2: AWR views in multitenant.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-no-cardinality-feedback-for-small-queries", "database": "Oracle Database", "date": "2017-01-05", "employment_period": "dbi-services-2014", "title": "12cR2: no cardinality feedback for small queries", "url": "https://www.dbi-services.com/blog/12cr2-no-cardinality-feedback-for-small-queries/", "source": "dbi-services", "evaluation": -1, "positive_weight": 1, "critical_weight": 2, "mixed": true, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "good" ], "critical_signals": [ "bug" ], "evidence_excerpt": "Uses strings against the oracle binary to trace bug 23596611, which bypasses 12c cardinality feedback re-optimization for queries classified internally as 'small', a change not yet documented.", "relation_aware": false }, { "publication_id": "dbi-services:exadata-express-cloud-service-pdb_admin-privileges", "database": "Oracle Database", "date": "2017-01-24", "employment_period": "dbi-services-2014", "title": "Exadata Express Cloud Service: PDB_ADMIN privileges", "url": "https://www.dbi-services.com/blog/exadata-express-cloud-service-pdb_admin-privileges/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Exadata Express Cloud Service: PDB_ADMIN privileges.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-core-factor-and-non-oracle-cloud", "database": "Oracle Database", "date": "2017-01-30", "employment_period": "dbi-services-2014", "title": "Oracle Core factor and Oracle or non-Oracle Cloud", "url": "https://www.dbi-services.com/blog/oracle-core-factor-and-non-oracle-cloud/", "source": "dbi-services", "evaluation": -1, "positive_weight": 1, "critical_weight": 2, "mixed": true, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 13, "positive_signals": [ "efficient" ], "critical_signals": [ "expensive" ], "evidence_excerpt": "The combination of core factor and virtualisation rules clearly disadvantages all competitors: IBM LPAR virtualisation is accepted, but IBM POWER core factor makes the database 2x more expensive than on processors you find in Oracle hardware (Intel, SPARC) Most data center run on VMWare ESX with 0.5 core factor Intel, but counting vCPU is not accepted and the whole datacenter may have to be licenced We are allowed to", "relation_aware": false }, { "publication_id": "dbi-services:amazon-aws-instances-and-oracle-database-performance", "database": "Oracle Database", "date": "2017-02-01", "employment_period": "dbi-services-2014", "title": "Amazon AWS instances and Oracle database performance", "url": "https://www.dbi-services.com/blog/amazon-aws-instances-and-oracle-database-performance/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Installing Oracle from an ORACLE_HOME clone is also very fast and creating a database with SLOB create_database_kit is easy.", "relation_aware": false }, { "publication_id": "dbi-services:running-slob-on-exadata-express-cloud-service", "database": "Oracle Database", "date": "2017-02-01", "employment_period": "dbi-services-2014", "title": "Running SLOB on Exadata Express Cloud Service", "url": "https://www.dbi-services.com/blog/running-slob-on-exadata-express-cloud-service/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Running SLOB on Exadata Express Cloud Service.", "relation_aware": false }, { "publication_id": "dbi-services:exadata-express-cloud-service-max_pdb_storage", "database": "Oracle Database", "date": "2017-02-03", "employment_period": "dbi-services-2014", "title": "Exadata Express Cloud Service: MAX_PDB_STORAGE", "url": "https://www.dbi-services.com/blog/exadata-express-cloud-service-max_pdb_storage/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Exadata Express Cloud Service: MAX_PDB_STORAGE.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-public-cloud-12cr2-tde-is-not-an-option", "database": "Oracle Database", "date": "2017-02-05", "employment_period": "dbi-services-2014", "title": "Oracle Public Cloud 12cR2: TDE is not an option", "url": "https://www.dbi-services.com/blog/oracle-public-cloud-12cr2-tde-is-not-an-option/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "product-wide", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Public Cloud 12cR2: TDE is not an option.", "relation_aware": false }, { "publication_id": "dbi-services:exadata-express-cloud-service-sql-and-optimizer-trace", "database": "Oracle Database", "date": "2017-02-06", "employment_period": "dbi-services-2014", "title": "Exadata Express Cloud Service: SQL and Optimizer trace", "url": "https://www.dbi-services.com/blog/exadata-express-cloud-service-sql-and-optimizer-trace/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Exadata Express Cloud Service: SQL and Optimizer trace.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-public-cloud-2-ocpu-for-1-proc-license", "database": "Oracle Database", "date": "2017-02-08", "employment_period": "dbi-services-2014", "title": "Oracle Public Cloud: 2 OCPU for 1 proc. license", "url": "https://www.dbi-services.com/blog/oracle-public-cloud-2-ocpu-for-1-proc-license/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [ "fast", "faster" ], "critical_signals": [], "evidence_excerpt": "And then, in order to optimize your Oracle licences, you need to choose the instance type that can run faster on less cores.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-public-cloud-liops-with-4-ocpu-in-paas", "database": "Oracle Database", "date": "2017-02-10", "employment_period": "dbi-services-2014", "title": "Oracle Public Cloud: LIOPS with 4 OCPU in PaaS", "url": "https://www.dbi-services.com/blog/oracle-public-cloud-liops-with-4-ocpu-in-paas/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Public Cloud: LIOPS with 4 OCPU in PaaS.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-dbca-can-create-a-standby-database", "database": "Oracle Database", "date": "2017-02-12", "employment_period": "dbi-services-2014", "title": "12cR2 DBCA can create a standby database", "url": "https://www.dbi-services.com/blog/12cr2-dbca-can-create-a-standby-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "This evolves in 12.2 with a new option in DBCA to do that: dbca -silent -createDuplicateDB -createAsStandby Limitations I’ve tried in the Oracle Public Cloud where I just created a RAC database.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-real-time-materialized-view-on-query-computation", "database": "Oracle Database", "date": "2017-02-17", "employment_period": "dbi-services-2014", "title": "12cR2 real-time materialized view (on query computation)", "url": "https://www.dbi-services.com/blog/12cr2-real-time-materialized-view-on-query-computation/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Database 12.2 goes a step further being able to deliver fresh result even when the materialized is stale.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-online-tablespace-encryption", "database": "Oracle Database", "date": "2017-02-26", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: Online tablespace encryption", "url": "https://www.dbi-services.com/blog/oracle-12cr2-online-tablespace-encryption/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2: Online tablespace encryption.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-changes-for-login-sql", "database": "Oracle Database", "date": "2017-03-07", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: changes for login.sql", "url": "https://www.dbi-services.com/blog/oracle-12cr2-changes-for-login-sql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2: changes for login.sql.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-rac-cloud-acfs-pdb-thin-clones-and-asmadmin", "database": "Oracle Database", "date": "2017-03-09", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2, RAC, Cloud, ACFS, PDB thin clones and asmadmin", "url": "https://www.dbi-services.com/blog/oracle-12cr2-rac-cloud-acfs-pdb-thin-clones-and-asmadmin/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "In the Oracle Public Cloud, fast provisioning gets all its meaning when creating a RAC database service: in one hour you can get an operational highly available multitenant database.", "relation_aware": false }, { "publication_id": "dbi-services:google-cloud-platform-instances-and-oracle-database-performance", "database": "Oracle Database", "date": "2017-03-12", "employment_period": "dbi-services-2014", "title": "Google Cloud Platform instances and Oracle Database", "url": "https://www.dbi-services.com/blog/google-cloud-platform-instances-and-oracle-database-performance/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Google Cloud Platform instances and Oracle Database.", "relation_aware": false }, { "publication_id": "dbi-services:google-cloud-platform-instances-and-oracle-database-performance", "database": "PostgreSQL", "date": "2017-03-12", "employment_period": "dbi-services-2014", "title": "Google Cloud Platform instances and Oracle Database", "url": "https://www.dbi-services.com/blog/google-cloud-platform-instances-and-oracle-database-performance/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "The Google Cloud Platform looks good and I’ll probably use my Google Cloud trial to test Spanner, and maybe the new PostgreSQL service.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-on-windows-virtual-accounts", "database": "Oracle Database", "date": "2017-03-16", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2 on Windows: Virtual Accounts", "url": "https://www.dbi-services.com/blog/oracle-12cr2-on-windows-virtual-accounts/", "source": "dbi-services", "evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "good", "recommended", "reduced cost, risk, or downtime" ], "critical_signals": [], "evidence_excerpt": "Explains Windows 2008 R2's Virtual Accounts as a new install-time option for the process running Oracle 12.2, avoiding the password-management overhead of the 12.1 Oracle Home User.", "relation_aware": false }, { "publication_id": "dbi-services:jan17-proactive-bundle-patch-adaptive-statistics-control", "database": "Oracle Database", "date": "2017-03-27", "employment_period": "dbi-services-2014", "title": "JAN17 Proactive Bundle Patch + Adaptive Statistics control", "url": "https://www.dbi-services.com/blog/jan17-proactive-bundle-patch-adaptive-statistics-control/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "If you have to create a new database now (I’m writing this in March 2017) for a migration of OLTP database with minimal risks of regression, I would recommend: The latest patchset of Oracle Database 12cR1 The latest Proactive Bundle Patch The two patches to get full control over Adaptive statistics This post gives more detail about it and which patches to apply.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-dbca-automatic-memory-management-and-databasetype", "database": "Oracle Database", "date": "2017-04-03", "employment_period": "dbi-services-2014", "title": "12cR2 DBCA, Automatic Memory Management, and -databaseType", "url": "https://www.dbi-services.com/blog/12cr2-dbca-automatic-memory-management-and-databasetype/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Then why not start with what is recommended by Oracle?", "relation_aware": false }, { "publication_id": "dbi-services:service-696c6f76656d756c746974656e616e74-has-1-instances", "database": "Oracle Database", "date": "2017-04-08", "employment_period": "dbi-services-2014", "title": "Service “696c6f76656d756c746974656e616e74” has 1 instance(s).", "url": "https://www.dbi-services.com/blog/service-696c6f76656d756c746974656e616e74-has-1-instances/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Let’s try to connect to it: SQL> connect sys/oracle@(DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=4aa269fa927779f0e053684ea8c0c27f))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.78.104)(PORT=1521))) as sysdba Connected.", "relation_aware": false }, { "publication_id": "dbi-services:listener-and-virtual-ip", "database": "Oracle Database", "date": "2017-04-25", "employment_period": "dbi-services-2014", "title": "Listener and Virtual IP", "url": "https://www.dbi-services.com/blog/listener-and-virtual-ip/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "The reason is that when the host specified in the listener.ora resolves to the same IP address as the hostname of the server, then Oracle listener binds the port on all interfaces, and this includes the VIP.", "relation_aware": false }, { "publication_id": "dbi-services:random-ora-01017-invalid-usernamepassword-in-12cr2", "database": "Oracle Database", "date": "2017-05-16", "employment_period": "dbi-services-2014", "title": "random “ORA-01017: invalid username/password” in 12cR2", "url": "https://www.dbi-services.com/blog/random-ora-01017-invalid-usernamepassword-in-12cr2/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "Here, Oracle is opening /dev/random in non-blocking mode which is good because it does not wait.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-needs-to-connect-with-password-for-cross-pdb-dml", "database": "Oracle Database", "date": "2017-05-26", "employment_period": "dbi-services-2014", "title": "12cR2 needs to connect with password for Cross-PDB DML", "url": "https://www.dbi-services.com/blog/12cr2-needs-to-connect-with-password-for-cross-pdb-dml/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Then, I provide the user/password but with local connection (no service name): SQL> connect sys/oracle as sysdba Connected.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12cr2-exchange-partition-deferred-invalidation", "database": "Oracle Database", "date": "2017-05-29", "employment_period": "dbi-services-2014", "title": "Oracle 12cR2: exchange partition deferred invalidation", "url": "https://www.dbi-services.com/blog/oracle-12cr2-exchange-partition-deferred-invalidation/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2: exchange partition deferred invalidation.", "relation_aware": false }, { "publication_id": "dbi-services:new-release-model-for-jul17-ru-and-rur", "database": "Oracle Database", "date": "2017-05-30", "employment_period": "dbi-services-2014", "title": "New release model for JUL17 (or Oracle 17.3): RU and RUR", "url": "https://www.dbi-services.com/blog/new-release-model-for-jul17-ru-and-rur/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "Tracks evolving rumors and confirmed bug references to predict the version number and release date of Oracle's new annual Release Update model ahead of its official announcement.", "relation_aware": false }, { "publication_id": "dbi-services:12c-nssn-process-for-data-guard-sync-transport", "database": "Oracle Database", "date": "2017-06-15", "employment_period": "dbi-services-2014", "title": "12c NSSn process for Data Guard SYNC transport", "url": "https://www.dbi-services.com/blog/12c-nssn-process-for-data-guard-sync-transport/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Here is my configuration with two physical standby: DGMGRL> show configuration Configuration - orcl Protection Mode: MaxPerformance Members: orcla - Primary database orclb - Physical standby database orclc - Physical standby database Fast-Start Failover: DISABLED Configuration Status: SUCCESS (status updated 56 seconds ago) Both are in SYNC: DGMGRL> show database orclb logxptmode; LogXptMode = 'sync' DGMGRL> show dat", "relation_aware": false }, { "publication_id": "dbi-services:oda-x6-installation-re-image", "database": "Oracle Database", "date": "2017-06-28", "employment_period": "dbi-services-2014", "title": "ODA X6 installation: re-image", "url": "https://www.dbi-services.com/blog/oda-x6-installation-re-image/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Gives a cheat sheet for re-imaging a freshly racked Oracle Database Appliance through the ILOM management network interface before the public network is configured.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-vii", "database": "Oracle Database", "date": "2017-07-31", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths VII – Bitmap Index Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-vii/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [ "bad" ], "evidence_excerpt": "Look for index_pages_fetched in costsize.c When clustering factor is bad, Oracle prefers to do a full table scan.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-vii", "database": "PostgreSQL", "date": "2017-07-31", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths VII – Bitmap Index Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-vii/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-unique-constraint", "database": "Oracle Database", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "Postgres unique constraint", "url": "https://www.dbi-services.com/blog/postgres-unique-constraint/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "The Postgres community is very responsive, especially when we may think that something works better in Oracle than Postgres (which was not the case here and which was not the goal of my tweet anyway – but tweets are short and may not express the tone properly).", "relation_aware": false }, { "publication_id": "dbi-services:postgres-unique-constraint", "database": "PostgreSQL", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "Postgres unique constraint", "url": "https://www.dbi-services.com/blog/postgres-unique-constraint/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "They are similar in Postgres and here is the solution proposed: alter table demo drop constraint demo_pk; ALTER TABLE alter table demo add constraint demo_pk primary key(n) deferrable initially deferred; ALTER TABLE begin transaction; BEGIN update demo set n=n-1; UPDATE 2 select * from demo; n --- 0 1 (2 rows) update demo set n=n+1; UPDATE 2 That seems good.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-0", "database": "Oracle Database", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths – intro", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-0/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths – intro.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-0", "database": "PostgreSQL", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths – intro", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-0/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-i", "database": "Oracle Database", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths I – Seq Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-i/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths I – Seq Scan.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-i", "database": "PostgreSQL", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths I – Seq Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-i/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgresql-on-cygwin", "database": "PostgreSQL", "date": "2017-08-01", "employment_period": "dbi-services-2014", "title": "PostgreSQL on Cygwin", "url": "https://www.dbi-services.com/blog/postgresql-on-cygwin/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "PostgreSQL on Cygwin.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-cloud-script-to-stop-all-paas-services", "database": "Oracle Database", "date": "2017-08-02", "employment_period": "dbi-services-2014", "title": "Oracle Cloud: script to stop all PaaS services", "url": "https://www.dbi-services.com/blog/oracle-cloud-script-to-stop-all-paas-services/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "useful" ], "critical_signals": [], "evidence_excerpt": "Provides a curl-and-jq shell script against the Oracle Cloud REST API that queries all non-stopped PaaS service instances and stops them, useful for cutting metered cloud costs overnight.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-ii", "database": "Oracle Database", "date": "2017-08-02", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths II – Index Only Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-ii/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Oracle can read indexes with INDEX FAST FULL SCAN in the same way it reads table with FULL TABLE SCAN: with larger I/O.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-ii", "database": "PostgreSQL", "date": "2017-08-02", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths II – Index Only Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-ii/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "Both Oracle and Postgres use MVCC which is great because you can have transactions and queries on the same database.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-iii", "database": "Oracle Database", "date": "2017-08-03", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths III – Partial Index", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-iii/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths III – Partial Index.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-iii", "database": "PostgreSQL", "date": "2017-08-03", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths III – Partial Index", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-iii/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:exadata-capacity-on-demand-and-elastic-rack", "database": "Oracle Database", "date": "2017-08-04", "employment_period": "dbi-services-2014", "title": "Exadata Capacity on Demand and Elastic Rack", "url": "https://www.dbi-services.com/blog/exadata-capacity-on-demand-and-elastic-rack/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Exadata Capacity on Demand and Elastic Rack.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-iv", "database": "Oracle Database", "date": "2017-08-05", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths IV – Order By and Index", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-iv/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Oracle has INDEX FAST FULL SCAN which is the fastest, reading blocks sequentially as they come.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-iv", "database": "PostgreSQL", "date": "2017-08-05", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths IV – Order By and Index", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-iv/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-v", "database": "Oracle Database", "date": "2017-08-08", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths V – FIRST ROWS and MIN/MAX", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-v/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "possesses stated advantages" ], "critical_signals": [], "evidence_excerpt": "Oracle access paths V – FIRST ROWS and MIN/MAX.", "relation_aware": true }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-v", "database": "PostgreSQL", "date": "2017-08-08", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths V – FIRST ROWS and MIN/MAX", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-v/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "advantage", "possesses stated advantages" ], "critical_signals": [], "evidence_excerpt": "Basically, both Oracle and Postgres take advantage of the index structure to get the minimum – or first value – from the sorted index entries.", "relation_aware": true }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-vi", "database": "Oracle Database", "date": "2017-08-09", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths VI – Index Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-vi/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths VI – Index Scan.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-vi", "database": "PostgreSQL", "date": "2017-08-09", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths VI – Index Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-vi/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "At the end, because I have an index with good clustering factor, and because I’m using the defaults on Linux without direct read and asynchronous I/O, the execution is very similar to the postgres one: read the few index blocks and follow the pointer to the 140 blocks of the table.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-viii", "database": "Oracle Database", "date": "2017-08-20", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths VIII – Index Scan and Filter", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-viii/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths VIII – Index Scan and Filter.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-viii", "database": "PostgreSQL", "date": "2017-08-20", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths VIII – Index Scan and Filter", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-viii/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-ix", "database": "Oracle Database", "date": "2017-08-23", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths IX – Tid Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-ix/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths IX – Tid Scan.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-ix", "database": "PostgreSQL", "date": "2017-08-23", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths IX – Tid Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-ix/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-x-update", "database": "Oracle Database", "date": "2017-08-24", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths X – Update", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-x-update/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths X – Update.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-x-update", "database": "PostgreSQL", "date": "2017-08-24", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths X – Update", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-x-update/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Postgres vs.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-xi", "database": "Oracle Database", "date": "2017-08-26", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths XI – Sample Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-xi/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle access paths XI – Sample Scan.", "relation_aware": false }, { "publication_id": "dbi-services:postgres-vs-oracle-access-paths-xi", "database": "PostgreSQL", "date": "2017-08-26", "employment_period": "dbi-services-2014", "title": "Postgres vs. Oracle access paths XI – Sample Scan", "url": "https://www.dbi-services.com/blog/postgres-vs-oracle-access-paths-xi/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [ "drawback", "slower side of comparison" ], "evidence_excerpt": "This is faster than the Postgres approach, but the drawback is that the result is not exact: 478 rows were returned here.", "relation_aware": true }, { "publication_id": "dbi-services:create-constraints-in-your-datawarehouse-why-and-how", "database": "Oracle Database", "date": "2017-09-08", "employment_period": "dbi-services-2014", "title": "Create constraints in your datawarehouse – why and how", "url": "https://www.dbi-services.com/blog/create-constraints-in-your-datawarehouse-why-and-how/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "We know that all rows in the fact table have a matching row in each dimension, but Oracle doesn’t know that.", "relation_aware": false }, { "publication_id": "dbi-services:when-deterministic-function-is-not", "database": "Oracle Database", "date": "2017-09-26", "employment_period": "dbi-services-2014", "title": "When deterministic function is not", "url": "https://www.dbi-services.com/blog/when-deterministic-function-is-not/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "bug diagnosis", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "Oracle will try to find the index entry by running the function, but then the value is not found in the index: SQL> delete from DEMO where n=3 and DEMO_FUNCTION(n) is not null; delete from DEMO where n=3 and DEMO_FUNCTION(n) is not null * ERROR at line 1: ORA-08102: index key not found, obj# 73317, file 12, block 5603 (2) This is a logical corruption caused by the bug in the function which was declared deterministic ", "relation_aware": false }, { "publication_id": "dbi-services:when-deterministic-function-is-not", "database": "PostgreSQL", "date": "2017-09-26", "employment_period": "dbi-services-2014", "title": "When deterministic function is not", "url": "https://www.dbi-services.com/blog/when-deterministic-function-is-not/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Tests what happens when a function-based index is declared on a non-deterministic function, contrasting Oracle's in-place row updates with Postgres HOT/WARM's insert-and-mark-stale MVCC design.", "relation_aware": false }, { "publication_id": "dbi-services:_suppress_identifiers_on_dupkey-the-sap-workaround-for-bad-design", "database": "Oracle Database", "date": "2017-09-29", "employment_period": "dbi-services-2014", "title": "“_suppress_identifiers_on_dupkey” – the SAP workaround for bad design", "url": "https://www.dbi-services.com/blog/_suppress_identifiers_on_dupkey-the-sap-workaround-for-bad-design/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "bad" ], "evidence_excerpt": "end; But it seems that there are many applications with this bad design, and Oracle has introduced an underscore parameter for them: “_suppress_identifiers_on_dupkey”.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-18c-ru-and-rur-for-pioneers-and-followers", "database": "Oracle Database", "date": "2017-10-03", "employment_period": "dbi-services-2014", "title": "Oracle 18c RU and RUR for pioneers and followers", "url": "https://www.dbi-services.com/blog/oracle-18c-ru-and-rur-for-pioneers-and-followers/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "Just a guess: if Oracle continues with’Cloud First’ release, there are good chances that we will get 18 c on-premises starting with 18.2 after a few months running 18.1 on the Cloud.", "relation_aware": false }, { "publication_id": "dbi-services:autonomous-database", "database": "Oracle Database", "date": "2017-10-08", "employment_period": "dbi-services-2014", "title": "Autonomous Database", "url": "https://www.dbi-services.com/blog/autonomous-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Distinguishes the marketing label from the underlying mechanisms of Oracle's Autonomous Database, tracing RAC and Data Guard availability features back to the Exadata Express Cloud Service.", "relation_aware": false }, { "publication_id": "dbi-services:odc-appreciation-day-javascript-in-the-database", "database": "Oracle Database", "date": "2017-10-10", "employment_period": "dbi-services-2014", "title": "ODC Appreciation Day : Javascript in the database", "url": "https://www.dbi-services.com/blog/odc-appreciation-day-javascript-in-the-database/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "But the good thing at Oracle Open World, is that we can discuss with Oracle product managers, and with other Oracle DBAs or Developers, rather than relying on rumors or wrong ideas.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-database-multilingual-engine-mle", "database": "Oracle Database", "date": "2017-10-11", "employment_period": "dbi-services-2014", "title": "Oracle Database Multilingual Engine (MLE)", "url": "https://www.dbi-services.com/blog/oracle-database-multilingual-engine-mle/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Database Multilingual Engine (MLE).", "relation_aware": false }, { "publication_id": "dbi-services:virtualbox-5-2-exports-the-vm-to-the-oracle-cloud", "database": "Oracle Database", "date": "2017-10-21", "employment_period": "dbi-services-2014", "title": "VirtualBox 5.2 exports the VM to the Oracle Cloud", "url": "https://www.dbi-services.com/blog/virtualbox-5-2-exports-the-vm-to-the-oracle-cloud/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "VirtualBox 5.2 exports the VM to the Oracle Cloud.", "relation_aware": false }, { "publication_id": "dbi-services:archivelog-deletion-policy-on-data-guard-configuration", "database": "Oracle Database", "date": "2017-10-22", "employment_period": "dbi-services-2014", "title": "Archivelog deletion policy on Data Guard configuration", "url": "https://www.dbi-services.com/blog/archivelog-deletion-policy-on-data-guard-configuration/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Update (August 2026): the RMAN parsing bug was fixed At the time of the original investigation, I opened an Oracle Support Request for this problem.", "relation_aware": false }, { "publication_id": "dbi-services:multitenant-dictionary-what-is-consolidated-and-what-is-not", "database": "Oracle Database", "date": "2017-11-05", "employment_period": "dbi-services-2014", "title": "Multitenant dictionary: what is consolidated and what is not", "url": "https://www.dbi-services.com/blog/multitenant-dictionary-what-is-consolidated-and-what-is-not/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Contrary to Oracle documentation stating Oracle-supplied objects live only in the root, system PL/SQL package source is root-only via metadata links, but system table definitions like COL$ are replicated into every PDB.", "relation_aware": false }, { "publication_id": "dbi-services:multitenant-internals-int-and-intint-views", "database": "Oracle Database", "date": "2017-11-05", "employment_period": "dbi-services-2014", "title": "Multitenant internals: INT$ and INT$INT$ views", "url": "https://www.dbi-services.com/blog/multitenant-internals-int-and-intint-views/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle's doubled INT$INT$ dictionary views, such as INT$INT$DBA_CONSTRAINTS, merge CDB$ROOT and PDB data transparently for common views, layered on top of the simpler single INT$ extended-data-view mechanism.", "relation_aware": false }, { "publication_id": "dbi-services:unstructed-vs-structured", "database": "Oracle Database", "date": "2017-11-18", "employment_period": "dbi-services-2014", "title": "Unstructured vs. structured", "url": "https://www.dbi-services.com/blog/unstructed-vs-structured/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "TIMES TO' and 'APPLIED' changes what Oracle reclaims.", "relation_aware": false }, { "publication_id": "dbi-services:12c-multitenant-internals-compiling-system-package-from-pdb", "database": "Oracle Database", "date": "2017-11-22", "employment_period": "dbi-services-2014", "title": "12c Multitenant Internals: compiling system package from PDB", "url": "https://www.dbi-services.com/blog/12c-multitenant-internals-compiling-system-package-from-pdb/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Tracing ALTER PACKAGE DBMS_SYSTEM COMPILE from a PDB shows Oracle switches to CDB$ROOT to read SOURCE$, yet some system DDL issued from a PDB is silently reduced to a no-op.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-docker-image-from-docker-store", "database": "Oracle Database", "date": "2017-12-15", "employment_period": "dbi-services-2014", "title": "Oracle docker image from docker store", "url": "https://www.dbi-services.com/blog/oracle-docker-image-from-docker-store/", "source": "dbi-services", "evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "better", "good" ], "critical_signals": [], "evidence_excerpt": "Better to do that in a VM dedicated for Oracle Database.", "relation_aware": false }, { "publication_id": "dbi-services:12cr2-subquery-elimination", "database": "Oracle Database", "date": "2017-12-21", "employment_period": "dbi-services-2014", "title": "12cR2 Subquery Elimination", "url": "https://www.dbi-services.com/blog/12cr2-subquery-elimination/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12cR2 adds Subquery Elimination, removing an EXISTS or IN semi-join subquery, and its extra full table scan, whenever the optimizer proves the subquery reads the same table with no filtering predicate.", "relation_aware": false }, { "publication_id": "dbi-services:drop-pdb-including-datafiles-may-keep-files-open", "database": "Oracle Database", "date": "2017-12-25", "employment_period": "dbi-services-2014", "title": "Drop PDB including datafiles may keep files open", "url": "https://www.dbi-services.com/blog/drop-pdb-including-datafiles-may-keep-files-open/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "useful" ], "critical_signals": [], "evidence_excerpt": "You can see them with lsof or from the /proc filesystem: SQL> host find /proc/*/fd -ls 2>/dev/null | grep deleted 79174 0 lrwx------ 1 oracle oinstall 64 Dec 25 21:20 /proc/6116/fd/257 -> /u02/oradata/users01.dbf (deleted) 79195 0 lrwx------ 1 oracle oinstall 64 Dec 25 21:20 /proc/6118/fd/257 -> /u02/oradata/undotbs01.dbf (deleted) 79216 0 lrwx------ 1 oracle oinstall 64 Dec 25 21:20 /proc/6120/fd/257 -> /u02/oradata", "relation_aware": false }, { "publication_id": "dbi-services:12c-multitenant-internals-pdb-replay-ddl-for-common-users", "database": "Oracle Database", "date": "2017-12-29", "employment_period": "dbi-services-2014", "title": "12c Multitenant internals: PDB replay DDL for common users", "url": "https://www.dbi-services.com/blog/12c-multitenant-internals-pdb-replay-ddl-for-common-users/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Common users, roles, and profiles created in CDB$ROOT are copied to each PDB by replaying DDL from PDB_SYNC$, not by metadata links, and Oracle tracks progress with a per-container REPLAY#.", "relation_aware": false }, { "publication_id": "dbi-services:12c-multitenant-internals-pdb_plug_in_violations", "database": "Oracle Database", "date": "2017-12-30", "employment_period": "dbi-services-2014", "title": "12c Multitenant internals: PDB_PLUG_IN_VIOLATIONS", "url": "https://www.dbi-services.com/blog/12c-multitenant-internals-pdb_plug_in_violations/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "When a common-user DDL statement fails on a closed PDB, Oracle records the failure in PDB_PLUG_IN_VIOLATIONS rather than blocking the CDB$ROOT change, then replays the DDL against that PDB the next time it opens.", "relation_aware": false }, { "publication_id": "dbi-services:keep-your-orapw-password-file-secure", "database": "Oracle Database", "date": "2018-01-05", "employment_period": "dbi-services-2014", "title": "Keep your orapw password file secure", "url": "https://www.dbi-services.com/blog/keep-your-orapw-password-file-secure/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL> create or replace directory DBS as '/u01/app/oracle/product/12.2.0/dbhome_1/dbs'; Directory DBS created.", "relation_aware": false }, { "publication_id": "dbi-services:spectre-and-meltdown-oracle-database-aws-slob", "database": "Oracle Database", "date": "2018-01-09", "employment_period": "dbi-services-2014", "title": "Spectre and Meltdown, Oracle Database, AWS, SLOB", "url": "https://www.dbi-services.com/blog/spectre-and-meltdown-oracle-database-aws-slob/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Spectre and Meltdown, Oracle Database, AWS, SLOB.", "relation_aware": false }, { "publication_id": "dbi-services:spectremeltdown-on-oracle-public-cloud-uek-pio", "database": "Oracle Database", "date": "2018-01-13", "employment_period": "dbi-services-2014", "title": "Spectre/Meltdown on Oracle Public Cloud UEK – PIO", "url": "https://www.dbi-services.com/blog/spectremeltdown-on-oracle-public-cloud-uek-pio/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Spectre/Meltdown on Oracle Public Cloud UEK – PIO.", "relation_aware": false }, { "publication_id": "dbi-services:spectre-and-meltdown-on-oracle-public-cloud-uek", "database": "Oracle Database", "date": "2018-01-14", "employment_period": "dbi-services-2014", "title": "Spectre and Meltdown on Oracle Public Cloud UEK – LIO", "url": "https://www.dbi-services.com/blog/spectre-and-meltdown-on-oracle-public-cloud-uek/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Spectre and Meltdown on Oracle Public Cloud UEK – LIO.", "relation_aware": false }, { "publication_id": "dbi-services:testing-oracle-sql-online", "database": "Microsoft SQL Server", "date": "2018-01-27", "employment_period": "dbi-services-2014", "title": "Testing Oracle SQL online", "url": "https://www.dbi-services.com/blog/testing-oracle-sql-online/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Here is a small list (expecting to grow from your comments) of free online services which can run with an Oracle Database: SQL Fiddle, Rextester, db<>fiddle and Oracle Live SQL SQL Fiddle SQL Fiddle let you build a schema and run DDL on the following databases: Oracle 11 g R2 Microsoft SQL Server 2014 MySQL 5.6 Postgres 9.6 and 9.3 SQLLite (WebSQL and SQL.js) As an Oracle user, the Oracle 11gR2 is not very useful as ", "relation_aware": false }, { "publication_id": "dbi-services:testing-oracle-sql-online", "database": "MySQL", "date": "2018-01-27", "employment_period": "dbi-services-2014", "title": "Testing Oracle SQL online", "url": "https://www.dbi-services.com/blog/testing-oracle-sql-online/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Here is a small list (expecting to grow from your comments) of free online services which can run with an Oracle Database: SQL Fiddle, Rextester, db<>fiddle and Oracle Live SQL SQL Fiddle SQL Fiddle let you build a schema and run DDL on the following databases: Oracle 11 g R2 Microsoft SQL Server 2014 MySQL 5.6 Postgres 9.6 and 9.3 SQLLite (WebSQL and SQL.js) As an Oracle user, the Oracle 11gR2 is not very useful as ", "relation_aware": false }, { "publication_id": "dbi-services:testing-oracle-sql-online", "database": "Oracle Database", "date": "2018-01-27", "employment_period": "dbi-services-2014", "title": "Testing Oracle SQL online", "url": "https://www.dbi-services.com/blog/testing-oracle-sql-online/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 13, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Now that Oracle plans to release an XE version every year, this should be better soon.", "relation_aware": false }, { "publication_id": "dbi-services:testing-oracle-sql-online", "database": "PostgreSQL", "date": "2018-01-27", "employment_period": "dbi-services-2014", "title": "Testing Oracle SQL online", "url": "https://www.dbi-services.com/blog/testing-oracle-sql-online/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Here is a small list (expecting to grow from your comments) of free online services which can run with an Oracle Database: SQL Fiddle, Rextester, db<>fiddle and Oracle Live SQL SQL Fiddle SQL Fiddle let you build a schema and run DDL on the following databases: Oracle 11 g R2 Microsoft SQL Server 2014 MySQL 5.6 Postgres 9.6 and 9.3 SQLLite (WebSQL and SQL.js) As an Oracle user, the Oracle 11gR2 is not very useful as ", "relation_aware": false }, { "publication_id": "dbi-services:testing-oracle-sql-online", "database": "SQLite", "date": "2018-01-27", "employment_period": "dbi-services-2014", "title": "Testing Oracle SQL online", "url": "https://www.dbi-services.com/blog/testing-oracle-sql-online/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "MariaDB 10.2 SQLite 3.8 PostgreSQL 8.4 9.4 9.6 10 Example: Oracle Live SQL Finally, you can also run on the latest release of Oracle, with a service provided by Oracle itself: Live SQL.", "relation_aware": false }, { "publication_id": "dbi-services:result-cache-when-not-to-use-it", "database": "Oracle Database", "date": "2018-01-29", "employment_period": "dbi-services-2014", "title": "Result Cache: when *not* to use it", "url": "https://www.dbi-services.com/blog/result-cache-when-not-to-use-it/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle documentation So this is what I’ve find in the Database Performance Tuning Guide about the Benefits of Using the Server Result Cache The benefits of using the server result cache depend on the application OLAP applications can benefit significantly from its use.", "relation_aware": false }, { "publication_id": "dbi-services:jan18-database-11gr2-psu-12cr1-proactivebp-12cr2-ru", "database": "Oracle Database", "date": "2018-02-06", "employment_period": "dbi-services-2014", "title": "JAN18: Database 11gR2 PSU, 12cR1 ProactiveBP, 12cR2 RU", "url": "https://www.dbi-services.com/blog/jan18-database-11gr2-psu-12cr1-proactivebp-12cr2-ru/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "recommended" ], "critical_signals": [], "evidence_excerpt": "If you want to apply the latest patches (and you should), you can go to the My Oracle Support Recommended Patch Advisor.", "relation_aware": false }, { "publication_id": "dbi-services:server-process-name-in-postgres-and-oracle", "database": "Oracle Database", "date": "2018-02-09", "employment_period": "dbi-services-2014", "title": "Server process name in Postgres and Oracle", "url": "https://www.dbi-services.com/blog/server-process-name-in-postgres-and-oracle/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "Oracle With Oracle, you can have ASH to sample session state, but being able to see it at OS level would be great.", "relation_aware": false }, { "publication_id": "dbi-services:server-process-name-in-postgres-and-oracle", "database": "PostgreSQL", "date": "2018-02-09", "employment_period": "dbi-services-2014", "title": "Server process name in Postgres and Oracle", "url": "https://www.dbi-services.com/blog/server-process-name-in-postgres-and-oracle/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "useful" ], "critical_signals": [], "evidence_excerpt": "They are more or less the command name used in the feed back after the command completion ‘idle’ is for sessions not currently running a statement ‘waiting’ is added when the session is waiting on a blocker session (enqueued on a lock for example) ‘wal writer process’ is a background process This is very useful information, especially because we have, on the same sampling, the Postgres session state (idle, waiting or", "relation_aware": false }, { "publication_id": "dbi-services:full-page-logging-in-postgres-and-oracle", "database": "Oracle Database", "date": "2018-02-14", "employment_period": "dbi-services-2014", "title": "Full page logging in Postgres and Oracle", "url": "https://www.dbi-services.com/blog/full-page-logging-in-postgres-and-oracle/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [ "expensive" ], "evidence_excerpt": "Deleting a lot of rows is an expensive operation in Oracle.", "relation_aware": false }, { "publication_id": "dbi-services:full-page-logging-in-postgres-and-oracle", "database": "PostgreSQL", "date": "2018-02-14", "employment_period": "dbi-services-2014", "title": "Full page logging in Postgres and Oracle", "url": "https://www.dbi-services.com/blog/full-page-logging-in-postgres-and-oracle/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 9, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Full page logging in Postgres and Oracle.", "relation_aware": false }, { "publication_id": "dbi-services:description_listdescriptionaddress_listfailoveryesload_balanceno", "database": "Oracle Database", "date": "2018-02-15", "employment_period": "dbi-services-2014", "title": "(DESCRIPTION_LIST=(DESCRIPTION=(ADDRESS_LIST=(FAILOVER=YES)(LOAD_BALANCE=NO)", "url": "https://www.dbi-services.com/blog/description_listdescriptionaddress_listfailoveryesload_balanceno/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "I check them with strace on the connect() system call, with the following script: for i in {1..10} do TNS_ADMIN=/tmp strace -T -e trace=connect sqlplus -s -L sys/oracle@NET_SERVICE_NAME as sysdba <<< \"\" 2>&1 | awk ' /sa_family=AF_INET, sin_port=htons/{ gsub(/[()]/,\" \") ; printf \"%s \",$5 } END{ print \"\" } ' done | sort | uniq So, I used meaningful numbers for my fake ports: 101 and 102 for the addresses in the first d", "relation_aware": false }, { "publication_id": "dbi-services:18c-read-only-oracle-home", "database": "Oracle Database", "date": "2018-02-18", "employment_period": "dbi-services-2014", "title": "18c Read Only Oracle Home", "url": "https://www.dbi-services.com/blog/18c-read-only-oracle-home/", "source": "dbi-services", "evaluation": 0, "positive_weight": 2, "critical_weight": 2, "mixed": true, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 8, "positive_signals": [ "good" ], "critical_signals": [ "bug" ], "evidence_excerpt": "I’ve no idea about the status of the bug, but at least this will not go to Oracle Home anymore.", "relation_aware": false }, { "publication_id": "dbi-services:oda-lite-what-is-this-odacli-repository", "database": "Oracle Database", "date": "2018-02-23", "employment_period": "dbi-services-2014", "title": "ODA Lite: What is this ‘odacli’ repository?", "url": "https://www.dbi-services.com/blog/oda-lite-what-is-this-odacli-repository/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "So better contact Oracle Support of you are not 142% sure about what you do.", "relation_aware": false }, { "publication_id": "dbi-services:18c-cloud-first-and-cloud-only-features-think-differently", "database": "Oracle Database", "date": "2018-02-26", "employment_period": "dbi-services-2014", "title": "18c, Cloud First and Cloud Only features: think differently", "url": "https://www.dbi-services.com/blog/18c-cloud-first-and-cloud-only-features-think-differently/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "comparison", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 10, "positive_signals": [], "critical_signals": [ "expensive" ], "evidence_excerpt": "And buying this option can be expensive if you are on ULA (because you will buy it for all processors), or on non-Oracle Cloud (because of the core factor) and even there some features will not be available.", "relation_aware": false }, { "publication_id": "dbi-services:a-free-persistent-google-cloud-service-with-oracle-xe", "database": "Oracle Database", "date": "2018-02-26", "employment_period": "dbi-services-2014", "title": "A free persistent Google Cloud service with Oracle XE", "url": "https://www.dbi-services.com/blog/a-free-persistent-google-cloud-service-with-oracle-xe/", "source": "dbi-services", "evaluation": 0, "positive_weight": 1, "critical_weight": 1, "mixed": true, "intent": "workaround", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 10, "positive_signals": [ "good" ], "critical_signals": [ "limitation" ], "evidence_excerpt": "The major limitation here comes from Oracle XE which is an old version (11.2.0.2) but this year should come Oracle XE 18c with the latest features.", "relation_aware": false }, { "publication_id": "dbi-services:18c-dbms_xplan-note-about-failed-sql-plan-baseline", "database": "Oracle Database", "date": "2018-02-27", "employment_period": "dbi-services-2014", "title": "18c dbms_xplan note about failed SQL Plan Baseline", "url": "https://www.dbi-services.com/blog/18c-dbms_xplan-note-about-failed-sql-plan-baseline/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Since Oracle 18c, DBMS_XPLAN.DISPLAY_CURSOR adds an explicit note when the optimizer failed to use a SQL Plan Baseline for a statement, after a data model change made the originally accepted plan unreproducible.", "relation_aware": false }, { "publication_id": "dbi-services:18c-new-lost-write-protection", "database": "Oracle Database", "date": "2018-03-03", "employment_period": "dbi-services-2014", "title": "18c new Lost Write Protection", "url": "https://www.dbi-services.com/blog/18c-new-lost-write-protection/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 18c introduces a standalone Lost Write Protection tablespace that stores per-block SCNs to detect a silently dropped disk write, without needing a Data Guard standby as the earlier 11g mechanism did.", "relation_aware": false }, { "publication_id": "dbi-services:enabled-accepted-fixed-sql-plan-baselines", "database": "Oracle Database", "date": "2018-03-09", "employment_period": "dbi-services-2014", "title": "Enabled, Accepted, Fixed SQL Plan Baselines", "url": "https://www.dbi-services.com/blog/enabled-accepted-fixed-sql-plan-baselines/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Testing 8 index-cost variations against a SQL Plan Baseline confirms Oracle only executes the currently Accepted plan among Enabled ones, ignoring cheaper newly loaded plans until they are manually accepted or fixed.", "relation_aware": false }, { "publication_id": "dbi-services:18c-pdb-switchover", "database": "Oracle Database", "date": "2018-03-11", "employment_period": "dbi-services-2014", "title": "18c PDB switchover", "url": "https://www.dbi-services.com/blog/18c-pdb-switchover/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 18c's PDB-level switchover, built on refreshable PDBs, failed with ORA-46697 when mandatory TDE encryption was enabled on the source CDB, since 'alter pluggable database' offers no keystore-password option for it.", "relation_aware": false }, { "publication_id": "dbi-services:result-cache-invalidation-caused-by-dml-locks", "database": "Oracle Database", "date": "2018-03-18", "employment_period": "dbi-services-2014", "title": "Result cache invalidation caused by DML locks", "url": "https://www.dbi-services.com/blog/result-cache-invalidation-caused-by-dml-locks/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "A DELETE statement matching zero rows still invalidates a dependent Oracle Result Cache entry, because the statement still acquires a Row Exclusive TM-mode lock declaring intent to modify that table.", "relation_aware": false }, { "publication_id": "dbi-services:docker-ce-on-oracle-enterprise-linux-7", "database": "Oracle Database", "date": "2018-03-29", "employment_period": "dbi-services-2014", "title": "Docker-CE on Oracle Enterprise Linux 7", "url": "https://www.dbi-services.com/blog/docker-ce-on-oracle-enterprise-linux-7/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Docker-CE on Oracle Enterprise Linux 7.", "relation_aware": false }, { "publication_id": "dbi-services:docker-efficiently-building-images-for-large-software", "database": "Oracle Database", "date": "2018-03-31", "employment_period": "dbi-services-2014", "title": "Docker: efficiently building images for large software", "url": "https://www.dbi-services.com/blog/docker-efficiently-building-images-for-large-software/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "But the installation process for Oracle does not really fit the Docker way to install by layers: you need to unzip the distribution, install from it to the Oracle Home, remove the things that are not needed, strop the binaries,… Before addressing those specific issues, here are the little tests I’ve done to show how the build layers increase the size of the image.", "relation_aware": false }, { "publication_id": "dbi-services:after-iot-iop-makes-its-way-to-the-database", "database": "Oracle Database", "date": "2018-04-01", "employment_period": "dbi-services-2014", "title": "After IoT, IoP makes its way to the database", "url": "https://www.dbi-services.com/blog/after-iot-iop-makes-its-way-to-the-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Querying V$SQLFN_METADATA in Oracle 18c on the Oracle Cloud reveals an undocumented TO_DOG_YEAR SQL function tagged version V13, alongside newer JSON_MERGEPATCH and ROUND_TIES_TO_EVEN function entries.", "relation_aware": false }, { "publication_id": "dbi-services:covering-indexes-in-oracle-and-branch-size", "database": "Microsoft SQL Server", "date": "2018-04-13", "employment_period": "dbi-services-2014", "title": "Covering indexes in Oracle, and branch size", "url": "https://www.dbi-services.com/blog/covering-indexes-in-oracle-and-branch-size/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle lacks SQL Server's INCLUDE clause, so adding covering columns means appending them to the key itself, which changes clustering factor and branch block size because the full entry is sorted.", "relation_aware": false }, { "publication_id": "dbi-services:covering-indexes-in-oracle-and-branch-size", "database": "Oracle Database", "date": "2018-04-13", "employment_period": "dbi-services-2014", "title": "Covering indexes in Oracle, and branch size", "url": "https://www.dbi-services.com/blog/covering-indexes-in-oracle-and-branch-size/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "benefit" ], "critical_signals": [], "evidence_excerpt": "You can add all columns to the key but depending on the implementation, the benefit can be: some data types may not be allowed in the key but allowed as data sorting the data when not required may be a performance overhead there can be limitations on the size of the key having a larger key may require more space in the branches adding sorted columns may change the clustering factor In Oracle, there are very few data ", "relation_aware": false }, { "publication_id": "dbi-services:adwc-a-docker-container-to-startstop-oracle-cloud-services", "database": "Oracle Database", "date": "2018-05-03", "employment_period": "dbi-services-2014", "title": "ADWC – a Docker container to start/stop Oracle Cloud services", "url": "https://www.dbi-services.com/blog/adwc-a-docker-container-to-startstop-oracle-cloud-services/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "ADWC – a Docker container to start/stop Oracle Cloud services.", "relation_aware": false }, { "publication_id": "dbi-services:adwc-the-hidden-gem-zepplin-notebook", "database": "Oracle Database", "date": "2018-05-04", "employment_period": "dbi-services-2014", "title": "ADWC – the hidden gem: Zepplin Notebook", "url": "https://www.dbi-services.com/blog/adwc-the-hidden-gem-zepplin-notebook/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Autonomous Data Warehouse's 'Manage Oracle ML Users' menu creates OML_DEVELOPER-role accounts needed to open the Apache-Zeppelin-based Oracle Machine Learning SQL Notebooks, separate from the regular ADMIN login.", "relation_aware": false }, { "publication_id": "dbi-services:some-ideas-about-oracle-database-on-docker", "database": "Oracle Database", "date": "2018-05-08", "employment_period": "dbi-services-2014", "title": "Some ideas about Oracle Database on Docker", "url": "https://www.dbi-services.com/blog/some-ideas-about-oracle-database-on-docker/", "source": "dbi-services", "evaluation": 1, "positive_weight": 3, "critical_weight": 2, "mixed": true, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 9, "positive_signals": [ "faster", "great" ], "critical_signals": [ "inefficient" ], "evidence_excerpt": "I started with the images provided by Oracle: and this is great to validate the docker environment.", "relation_aware": false }, { "publication_id": "dbi-services:sql-developer-web-on-the-oracle-cloud", "database": "Oracle Database", "date": "2018-05-10", "employment_period": "dbi-services-2014", "title": "SQL Developer Web on the Oracle Cloud", "url": "https://www.dbi-services.com/blog/sql-developer-web-on-the-oracle-cloud/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL Developer Web on the Oracle Cloud.", "relation_aware": false }, { "publication_id": "dbi-services:12c-upuserxt-lst-upobjxt-lst-oracle-maintained-objectsusers", "database": "Oracle Database", "date": "2018-05-15", "employment_period": "dbi-services-2014", "title": "12c upuserxt.lst, upobjxt.lst & Oracle Maintained objects/users", "url": "https://www.dbi-services.com/blog/12c-upuserxt-lst-upobjxt-lst-oracle-maintained-objectsusers/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "useful" ], "critical_signals": [], "evidence_excerpt": "Note that this information about Oracle Maintained objects, in addition to being very useful for us, is crucial when you further convert the non-CDB to a PDB because those will become metadata links.", "relation_aware": false }, { "publication_id": "dbi-services:adwc-system-and-session-settings-dwcs-lockdown-profile", "database": "Oracle Database", "date": "2018-05-24", "employment_period": "dbi-services-2014", "title": "ADWC – System and session settings (DWCS lockdown profile)", "url": "https://www.dbi-services.com/blog/adwc-system-and-session-settings-dwcs-lockdown-profile/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "For example, we have the privilege to change initialization parameters: SQL> select * from dba_sys_privs where grantee=user and privilege like 'ALTER S%'; GRANTEE PRIVILEGE ADMIN_OPTION COMMON INHERITED ------- --------- ------------ ------ --------- ADMIN ALTER SESSION YES NO NO ADMIN ALTER SYSTEM YES NO NO Still, not everything is allowed for several reasons: ensure that we cannot break the Oracle managed CDB and f", "relation_aware": false }, { "publication_id": "dbi-services:postgres-the-fsync-issue-and-pgio-the-slob-method-for-postgresql", "database": "PostgreSQL", "date": "2018-05-24", "employment_period": "dbi-services-2014", "title": "Postgres, the fsync() issue, and ‘pgio’ (the SLOB method for PostgreSQL)", "url": "https://www.dbi-services.com/blog/postgres-the-fsync-issue-and-pgio-the-slob-method-for-postgresql/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "efficient", "good" ], "critical_signals": [], "evidence_excerpt": "That’s a long blog post title, which is actually just a good pretext to play with Kevin Closson SLOB method for PostgreSQL: pgio I use the beta version of pgio here.", "relation_aware": false }, { "publication_id": "dbi-services:which-bitnami-service-to-choose-in-the-oracle-cloud-infrastructure", "database": "Oracle Database", "date": "2018-05-25", "employment_period": "dbi-services-2014", "title": "Which Bitnami service to choose in the Oracle Cloud Infrastructure?", "url": "https://www.dbi-services.com/blog/which-bitnami-service-to-choose-in-the-oracle-cloud-infrastructure/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "efficient" ], "critical_signals": [], "evidence_excerpt": "Is Oracle Linux Unbreakable Kernel more efficient?", "relation_aware": false }, { "publication_id": "dbi-services:which-bitnami-service-to-choose-in-the-oracle-cloud-infrastructure", "database": "PostgreSQL", "date": "2018-05-25", "employment_period": "dbi-services-2014", "title": "Which Bitnami service to choose in the Oracle Cloud Infrastructure?", "url": "https://www.dbi-services.com/blog/which-bitnami-service-to-choose-in-the-oracle-cloud-infrastructure/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Running Kevin Closson's pgio SLOB method with four 1GB cached-only schemas across Bitnami PostgreSQL images on different Linux distributions isolates whether the kernel changes CPU throughput.", "relation_aware": false }, { "publication_id": "dbi-services:openshift-on-my-windows-10-laptop-with-minishift", "database": "Oracle Database", "date": "2018-05-31", "employment_period": "dbi-services-2014", "title": "OpenShift on my Windows 10 laptop with MiniShift", "url": "https://www.dbi-services.com/blog/openshift-on-my-windows-10-laptop-with-minishift/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Here are the ports that are redirected to: C:\\Users\\fpa>SET DOCKER_TLS_VERIFY=1 C:\\Users\\fpa>SET DOCKER_HOST=tcp://192.168.99.102:2376 C:\\Users\\fpa>SET DOCKER_CERT_PATH=C:\\Users\\fpa\\.minishift\\certs C:\\Users\\fpa>docker port orcl 1521/tcp -> 0.0.0.0:32771 5500/tcp -> 0.0.0.0:32770 Then, easy to connect with SQL*Net with the credentials provided (see the setup instructions ) C:\\Users\\fpa>sqlcl sys/Oradoc_db1@//192.168.", "relation_aware": false }, { "publication_id": "dbi-services:sqlcl-connect-target-depends-on-previous-connection", "database": "Oracle Database", "date": "2018-06-01", "employment_period": "dbi-services-2014", "title": "SQLcl connect target depends on previous connection", "url": "https://www.dbi-services.com/blog/sqlcl-connect-target-depends-on-previous-connection/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL> define _CONNECT_IDENTIFIER DEFINE _CONNECT_IDENTIFIER = \"CDB1\" (CHAR) Disconnect The first solution to avoid this in SQLcl is to always disconnect before you want to connect to a different service: SQL> connect sys/oracle@//localhost/PDB1 as sysdba Connected.", "relation_aware": false }, { "publication_id": "dbi-services:installing-mamp-to-play-with-php-mysql-and-openflights", "database": "MySQL", "date": "2018-06-02", "employment_period": "dbi-services-2014", "title": "Installing MAMP to play with PHP, MySQL and OpenFlights", "url": "https://www.dbi-services.com/blog/installing-mamp-to-play-with-php-mysql-and-openflights/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Installing MAMP to play with PHP, MySQL and OpenFlights.", "relation_aware": false }, { "publication_id": "dbi-services:change-data-capture-from-oracle-with-streamset-data-collector", "database": "Oracle Database", "date": "2018-06-11", "employment_period": "dbi-services-2014", "title": "Change Data Capture from Oracle with StreamSets Data Collector", "url": "https://www.dbi-services.com/blog/change-data-capture-from-oracle-with-streamset-data-collector/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "This is good for existing products vendors such as Oracle GoldenGate (which must be licensed even to use only the CDC part in the Oracle Database as Streams is going to be desupported ) or Dbvisit replicate to Kafka .", "relation_aware": false }, { "publication_id": "dbi-services:remote-syslog-from-linux-and-solaris", "database": "Oracle Database", "date": "2018-06-20", "employment_period": "dbi-services-2014", "title": "Remote syslog from Linux and Solaris", "url": "https://www.dbi-services.com/blog/remote-syslog-from-linux-and-solaris/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "If SYSDBA auditing stays only in adump or the database trail, the DBA can erase it; forwarding Oracle audit records with rsyslog over TCP or UDP 514 to another host protects the evidence.", "relation_aware": false }, { "publication_id": "dbi-services:introduction-to-database-for-power-coders-with-mysql", "database": "MySQL", "date": "2018-06-22", "employment_period": "dbi-services-2014", "title": "Introduction to databases for {Power.Coders} with MySQL", "url": "https://www.dbi-services.com/blog/introduction-to-database-for-power-coders-with-mysql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Introduction to databases for {Power.Coders} with MySQL.", "relation_aware": false }, { "publication_id": "dbi-services:18c-no-active-data-guard-required-and-detected-when-only-cdbroot-and-pdbseed-are-opened-in-read-only", "database": "Oracle Database", "date": "2018-06-24", "employment_period": "dbi-services-2014", "title": "18c: No Active Data Guard required (and detected) when only CDB$ROOT and PDB$SEED are opened in read-only", "url": "https://www.dbi-services.com/blog/18c-no-active-data-guard-required-and-detected-when-only-cdbroot-and-pdbseed-are-opened-in-read-only/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 18c removes the Active Data Guard requirement for real-time-apply read-only opening of CDB$ROOT and PDB$SEED during online PDB cloning, as long as user PDBs stay closed while managed recovery applies changes.", "relation_aware": false }, { "publication_id": "dbi-services:kernel-panic-not-syncing-out-of-memory-and-no-killable-processes", "database": "Oracle Database", "date": "2018-06-26", "employment_period": "dbi-services-2014", "title": "Kernel panic – not syncing: Out of memory and no killable processes", "url": "https://www.dbi-services.com/blog/kernel-panic-not-syncing-out-of-memory-and-no-killable-processes/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "Of course, if the server tries to start the Oracle instances, the systems starts to swap so better change also the runlevel.", "relation_aware": false }, { "publication_id": "dbi-services:lighty-for-postgresql", "database": "Oracle Database", "date": "2018-06-27", "employment_period": "dbi-services-2014", "title": "Lighty for PostgreSQL", "url": "https://www.dbi-services.com/blog/lighty-for-postgresql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Of course, if you compare it with Lighty for Oracle, you will see some limitations.", "relation_aware": false }, { "publication_id": "dbi-services:lighty-for-postgresql", "database": "PostgreSQL", "date": "2018-06-27", "employment_period": "dbi-services-2014", "title": "Lighty for PostgreSQL", "url": "https://www.dbi-services.com/blog/lighty-for-postgresql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Lighty for PostgreSQL.", "relation_aware": false }, { "publication_id": "dbi-services:pgio-pg_stat_activity-and-pg_stat_statements", "database": "Oracle Database", "date": "2018-06-28", "employment_period": "dbi-services-2014", "title": "PGIO, PG_STAT_ACTIVITY and PG_STAT_STATEMENTS", "url": "https://www.dbi-services.com/blog/pgio-pg_stat_activity-and-pg_stat_statements/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Unlike Oracle's V$SESSION and V$SQL joined on SQL_ID, PostgreSQL's pg_stat_activity only shows the top-level PL/pgSQL call during a PGIO run, so pg_stat_statements must be enabled to see the actual executed statements.", "relation_aware": false }, { "publication_id": "dbi-services:pgio-pg_stat_activity-and-pg_stat_statements", "database": "PostgreSQL", "date": "2018-06-28", "employment_period": "dbi-services-2014", "title": "PGIO, PG_STAT_ACTIVITY and PG_STAT_STATEMENTS", "url": "https://www.dbi-services.com/blog/pgio-pg_stat_activity-and-pg_stat_statements/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Unlike Oracle's V$SESSION and V$SQL joined on SQL_ID, PostgreSQL's pg_stat_activity only shows the top-level PL/pgSQL call during a PGIO run, so pg_stat_statements must be enabled to see the actual executed statements.", "relation_aware": false }, { "publication_id": "dbi-services:event-sourcing-cqn-is-not-a-replacement-for-cdc", "database": "Oracle Database", "date": "2018-07-02", "employment_period": "dbi-services-2014", "title": "Event Sourcing: CQN is not a replacement for CDC", "url": "https://www.dbi-services.com/blog/event-sourcing-cqn-is-not-a-replacement-for-cdc/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle's Continuous Query Notification, built for refreshing caches on slowly changing data, is not designed for event-sourcing microservice architectures that need Change Data Capture for frequent transactional changes.", "relation_aware": false }, { "publication_id": "medium:38594cf6a11a", "database": "Oracle Database", "date": "2018-07-06", "employment_period": "dbi-services-2014", "title": "strace the current Oracle session process", "url": "https://medium.com/@FranckPachot/strace-the-current-oracle-session-process-38594cf6a11a", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "strace the current Oracle session process.", "relation_aware": false }, { "publication_id": "medium:e71f650e3300", "database": "Oracle Database", "date": "2018-07-06", "employment_period": "dbi-services-2014", "title": "Oracle archivelog deletion policy", "url": "https://medium.com/@FranckPachot/oracle-archivelog-deletion-policy-e71f650e3300", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle archivelog deletion policy.", "relation_aware": false }, { "publication_id": "dbi-services:pgsentinel-the-sampling-approach-for-postgresql", "database": "PostgreSQL", "date": "2018-07-12", "employment_period": "dbi-services-2014", "title": "pgSentinel: the sampling approach for PostgreSQL", "url": "https://www.dbi-services.com/blog/pgsentinel-the-sampling-approach-for-postgresql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "pgSentinel: the sampling approach for PostgreSQL.", "relation_aware": false }, { "publication_id": "medium:16601c06fd3a", "database": "Oracle Database", "date": "2018-07-13", "employment_period": "dbi-services-2014", "title": "Oracle: connection rate to the listener", "url": "https://medium.com/@FranckPachot/oracle-connection-rate-to-the-listener-16601c06fd3a", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle: connection rate to the listener.", "relation_aware": false }, { "publication_id": "dbi-services:drilling-down-the-pgsentinel-active-session-history", "database": "PostgreSQL", "date": "2018-07-15", "employment_period": "dbi-services-2014", "title": "Drilling down the pgSentinel Active Session History", "url": "https://www.dbi-services.com/blog/drilling-down-the-pgsentinel-active-session-history/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Grouping pg_active_session_history by backend_type over a 5-minute window and dividing the sample count by elapsed seconds derives an Average Active Sessions metric for PostgreSQL, matching Oracle's AAS from ASH.", "relation_aware": false }, { "publication_id": "dbi-services:google-cloud-spanner-inserting-data", "database": "Oracle Database", "date": "2018-07-19", "employment_period": "dbi-services-2014", "title": "Google Cloud Spanner – inserting data", "url": "https://www.dbi-services.com/blog/google-cloud-spanner-inserting-data/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "This reminds me of the Oracle CLUSTER segment that is so rarely used because storing the tables separately is finally the better compromise on performance and flexibility for a multi-purpose database.", "relation_aware": false }, { "publication_id": "medium:2dd8bfcd54b5", "database": "Oracle Database", "date": "2018-07-20", "employment_period": "dbi-services-2014", "title": "Installing ZFS on OEL7 UEK4", "url": "https://medium.com/@FranckPachot/installing-zfs-on-oel7-uek4-2dd8bfcd54b5", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", 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18.0.0.0.0 - Production This looks good but is clearly insufficient.", "relation_aware": false }, { "publication_id": "medium:ed47447e62a0", "database": "Oracle Database", "date": "2018-12-11", "employment_period": "cern-2018", "title": "Minimal Oracle installation (and Docker image)", "url": "https://medium.com/@FranckPachot/minimal-oracle-installation-and-docker-image-ed47447e62a0", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Minimal Oracle installation (and Docker image).", "relation_aware": false }, { "publication_id": "medium:aec8e4eec7f3", "database": "Oracle Database", "date": "2018-12-14", "employment_period": "cern-2018", "title": "CPU Capacity planning from OEM metrics", "url": "https://medium.com/@FranckPachot/cpu-capacity-planning-from-oem-metrics-aec8e4eec7f3", "source": "medium", "evaluation": -1, "positive_weight": 0, "critical_weight": 2, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "expensive" ], "evidence_excerpt": "CPU Capacity planning from OEM metrics CPU Capacity planning from OEM metrics The CPU used by your Oracle Database is expensive because it is the metric used by licensing.", "relation_aware": false }, { "publication_id": "cern:155", "database": "Oracle Database", "date": "2018-12-16", "employment_period": "cern-2018", "title": "Oracle VPD as a safeguard for DML", "url": "https://db-blog.web.cern.ch/blog/franck-pachot/2018-12-oracle-vpd-safeguard-dml", "source": "cern", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle VPD as a safeguard for DML.", "relation_aware": false }, { "publication_id": "medium:eabf77bc38bb", "database": "Oracle Database", "date": "2018-12-17", "employment_period": "cern-2018", "title": "Oracle VPD as a safeguard for DML", "url": "https://medium.com/@FranckPachot/oracle-vpd-as-a-safeguard-for-dml-eabf77bc38bb", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle VPD as a safeguard for DML.", "relation_aware": false }, { "publication_id": "medium:302383103998", "database": "Microsoft SQL Server", "date": "2018-12-26", "employment_period": "cern-2018", "title": "Index Only access with Oracle, MySQL, PostgreSQL, and Microsoft SQL Server", "url": "https://medium.com/@FranckPachot/index-only-access-with-oracle-mysql-postgresql-and-microsoft-sql-server-302383103998", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Index Only access with Oracle, MySQL, PostgreSQL, and Microsoft SQL Server.", "relation_aware": false }, { "publication_id": "medium:302383103998", "database": "MySQL", "date": "2018-12-26", "employment_period": "cern-2018", "title": "Index Only access with Oracle, MySQL, PostgreSQL, and Microsoft SQL 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"positive_signals": [], "critical_signals": [], "evidence_excerpt": "Index Only access with Oracle, MySQL, PostgreSQL, and Microsoft SQL Server.", "relation_aware": false }, { "publication_id": "medium:ab11aa7dbfe7", "database": "Oracle Database", "date": "2018-12-31", "employment_period": "cern-2018", "title": "UUID (aka GUID) vs. Oracle sequence number", "url": "https://medium.com/@FranckPachot/uuid-aka-guid-vs-oracle-sequence-number-ab11aa7dbfe7", "source": "medium", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "efficient", "scalable" ], "critical_signals": [], "evidence_excerpt": "Oracle provides SEQUENCE for this purpose, which is optimized, easy to use and scalable.", "relation_aware": false }, { "publication_id": "medium:b9dff0fbd5e9", "database": "Oracle Database", "date": "2019-01-05", "employment_period": "cern-2018", "title": "Oracle listener static service hi-jacking", "url": "https://medium.com/@FranckPachot/oracle-listener-static-service-hi-jacking-b9dff0fbd5e9", "source": "medium", "evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [ "good", "powerful" ], "critical_signals": [], "evidence_excerpt": "Oracle listener static service hi-jacking Oracle listener static service hi-jacking We must be careful about the services that are registered to a listener because the user connects to them with a good idea of the database… Oracle listener static service hi-jacking We must be careful about the services that are registered to a listener because the user connects to them with a good idea of the database she wants to co", "relation_aware": false }, { "publication_id": "medium:9c4145831389", "database": "Oracle Database", "date": "2019-01-07", "employment_period": "cern-2018", "title": "Oracle literal vs bind-variable in partition pruning and Top-N queries", "url": "https://medium.com/@FranckPachot/oracle-literal-vs-bind-variable-in-partition-pruning-and-top-n-queries-9c4145831389", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle literal vs bind-variable in partition pruning and Top-N queries.", "relation_aware": false }, { "publication_id": "medium:1c2aa2aa3f32", "database": "Oracle Database", "date": "2019-01-08", "employment_period": "cern-2018", "title": "Oracle global vs. partition level statistics CBO usage", "url": "https://medium.com/@FranckPachot/oracle-global-vs-partition-level-statistics-cbo-usage-1c2aa2aa3f32", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle global vs.", "relation_aware": false }, { "publication_id": "medium:7761bc034704", "database": "Oracle Database", "date": "2019-01-10", "employment_period": "cern-2018", "title": "You don’t need the PLAN_TABLE table", "url": "https://medium.com/@FranckPachot/you-dont-need-the-plan-table-table-7761bc034704", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Traces a cannot-fetch-last-explain-plan error to a stale application-owned PLAN_TABLE shadowing the SYS global temporary table since Oracle 8i, fixed by dropping or renaming it.", "relation_aware": false }, { "publication_id": "medium:83346ccf6a41", "database": "Oracle Database", "date": "2019-01-18", "employment_period": "cern-2018", "title": "Oracle — Table lock modes", "url": "https://medium.com/@FranckPachot/oracle-table-lock-modes-83346ccf6a41", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle — Table lock modes.", "relation_aware": false }, { "publication_id": "medium:81e3175eae7e", "database": "Oracle Database", "date": "2019-01-24", "employment_period": "cern-2018", "title": "Oracle numbers in K/M/G/T/P/E", "url": "https://medium.com/@FranckPachot/oracle-numbers-in-k-m-g-t-p-e-81e3175eae7e", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle numbers in K/M/G/T/P/E.", "relation_aware": false }, { "publication_id": "medium:73e74dc727ee", "database": "Oracle Database", "date": "2019-02-14", "employment_period": "cern-2018", "title": "Network troubleshooting with tcpdump and strace", "url": "https://medium.com/@FranckPachot/network-troubleshooting-with-tcpdump-and-strace-73e74dc727ee", "source": "medium", "evaluation": 0, "positive_weight": 0, 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"medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 19c Hint Usage reporting.", "relation_aware": false }, { "publication_id": "medium:f4ce8a37bfe3", "database": "Oracle Database", "date": "2019-02-20", "employment_period": "cern-2018", "title": "19c DG Broker export/import configuration", "url": "https://medium.com/@FranckPachot/19c-dg-broker-export-import-configuration-f4ce8a37bfe3", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "What this doesn’t show is that when you do not provide an extension, ‘.log’ will be added (which is a funny default for an XML file…) [oracle@db192 trace]$ ls -alrt $ORACLE_BASE/diag/rdbms/*/$ORACLE_SID/trace/*myconfig* -rw-r--r--.", "relation_aware": false }, { "publication_id": "medium:e0c3b77968d7", "database": "Oracle Database", "date": "2019-02-23", "employment_period": "cern-2018", "title": "19c Easy Connect", "url": "https://medium.com/@FranckPachot/19c-easy-connect-e0c3b77968d7", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "19c Easy Connect 19c Easy Connect When TCP/IP was the protocol used mostly everywhere, Oracle introduced EZCONNECT naming method to avoid long connection strings with… 19c Easy Connect When TCP/IP was the protocol used mostly everywhere, Oracle introduced EZCONNECT naming method to avoid long connection strings with parentheses everywhere.", "relation_aware": false }, { "publication_id": "medium:dd66d9558cdc", "database": "Oracle Database", "date": "2019-03-05", "employment_period": "cern-2018", "title": "My next Conferences in 2019", "url": "https://medium.com/@FranckPachot/my-next-conferences-in-2019-dd66d9558cdc", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Lists 2019 talks on data and code co-location with the Oracle MLE engine, optimizer statistics best practices, and join-method internals traced through internal rowsource functions.", "relation_aware": false }, { "publication_id": "medium:60ebdaecec3e", "database": "Oracle Database", "date": "2019-03-06", "employment_period": "cern-2018", "title": "19c Observe-Only Data Guard FSFO: no split-brain risk in manual failover", "url": "https://medium.com/@FranckPachot/19c-observe-only-data-guard-fsfo-no-split-brain-risk-in-manual-failover-60ebdaecec3e", "source": "medium", "evaluation": 2, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "19c Observe-Only Data Guard FSFO: no split-brain risk in manual failover 19c Observe-Only Data Guard FSFO: no split-brain risk in manual failover Fast-Start Failover (FSFO) is an amazing feature of Oracle Data Guard Broker which brings High Availability (HA)features 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"database": "Oracle Database", "date": "2019-03-14", "employment_period": "cern-2018", "title": "Oracle stored procedure compilation errors displayed for humans", "url": "https://medium.com/@FranckPachot/oracle-stored-procedure-compilation-errors-displayed-for-humans-ef798bcd096c", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle stored procedure compilation errors displayed for humans.", "relation_aware": false }, { "publication_id": "medium:7ce6414aa6c4", "database": "Oracle Database", "date": "2019-03-15", "employment_period": "cern-2018", "title": "Oracle Multi-Lingual Engine", "url": "https://medium.com/@FranckPachot/oracle-multi-lingual-engine-7ce6414aa6c4", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 10, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Multi-Lingual Engine.", "relation_aware": false }, { "publication_id": "medium:a7a102e1e5ce", "database": "Oracle Database", "date": "2019-03-17", "employment_period": "cern-2018", "title": "SQL, PL/SQL and JavaScript running in the Database Server (Oracle MLE)", "url": "https://medium.com/@FranckPachot/sql-pl-sql-and-javascript-running-in-the-database-server-oracle-mle-a7a102e1e5ce", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL, PL/SQL and JavaScript running in the Database Server (Oracle MLE).", "relation_aware": false }, { "publication_id": "medium:415ffa064955", "database": "PostgreSQL", "date": "2019-03-18", "employment_period": "cern-2018", "title": "High CPU usage in docker-proxy with chatty database application? Disable userland-proxy!", "url": "https://medium.com/@FranckPachot/high-cpu-usage-in-docker-proxy-with-chatty-database-application-disable-userland-proxy-415ffa064955", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Traces high docker-proxy CPU usage in a chatty PostgreSQL and pgbench container setup back to Docker's default userland-proxy, resolved by disabling it or co-locating the containers.", "relation_aware": false }, { "publication_id": "medium:387886a18086", "database": "MySQL", "date": "2019-04-04", "employment_period": "cern-2018", "title": "Adding JDBC driver property in SQL Developer connecting to MySQL", "url": "https://medium.com/@FranckPachot/adding-jdbc-driver-property-in-sql-developer-connecting-to-mysql-387886a18086", "source": "medium", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "lack" ], "evidence_excerpt": "Injects a serverTimezone parameter after the port field in SQL Developer's MySQL connection dialog, working around its lack of a dedicated JDBC property input field.", "relation_aware": false }, { "publication_id": "medium:387886a18086", "database": "Oracle Database", "date": "2019-04-04", "employment_period": "cern-2018", "title": "Adding JDBC driver property in SQL Developer connecting to MySQL", "url": "https://medium.com/@FranckPachot/adding-jdbc-driver-property-in-sql-developer-connecting-to-mysql-387886a18086", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "However, this trick works if you want to add any property to the JDBC URL string when connecting with Oracle SQL Developer, which provides no other way to add properties.", "relation_aware": false }, { "publication_id": "medium:8e326bb8c9f5", "database": "Oracle Database", "date": "2019-04-04", "employment_period": "cern-2018", "title": "19c EZCONNECT and Wallet (Easy Connect and External Password File)", "url": "https://medium.com/@FranckPachot/19c-ezconnect-and-wallet-easy-connect-and-external-password-file-8e326bb8c9f5", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "19c dummy parameter Oracle 19c extends the EZCONNECT syntax as I described recently in: 19c Easy Connect When TCP/IP was the protocol used mostly everywhere, Oracle introduced EZCONNECT naming method to avoid long connection… medium.com With this syntax, I can add parameters.", "relation_aware": false }, { "publication_id": "medium:db0a8db4c38f", "database": "Oracle Database", "date": "2019-04-06", "employment_period": "cern-2018", "title": "zHeap: PostgreSQL with UNDO", "url": "https://medium.com/@FranckPachot/zheap-postgresql-with-undo-db0a8db4c38f", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "For a better installation… zHeap: PostgreSQL with UNDO I’m running on an Oracle Cloud Linux 7.6 VM provisioned as a sandbox so I don’t care about where it installs.", "relation_aware": false }, { "publication_id": "medium:db0a8db4c38f", "database": "PostgreSQL", "date": "2019-04-06", "employment_period": "cern-2018", "title": "zHeap: PostgreSQL with UNDO", "url": "https://medium.com/@FranckPachot/zheap-postgresql-with-undo-db0a8db4c38f", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "For a better installation… zHeap: PostgreSQL with UNDO I’m running on an Oracle Cloud Linux 7.6 VM provisioned as a sandbox so I don’t care about where it installs.", "relation_aware": false }, { "publication_id": "medium:dfd666911bed", "database": "Oracle Database", "date": "2019-04-07", "employment_period": "cern-2018", "title": "19c EM Express (aka Oracle Cloud Database Express)", "url": "https://medium.com/@FranckPachot/19c-em-express-aka-oracle-cloud-database-express-dfd666911bed", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "19c EM Express (aka Oracle Cloud Database Express).", "relation_aware": false }, { "publication_id": "medium:e00cb81ed7e2", "database": "Oracle Database", "date": "2019-04-22", "employment_period": "cern-2018", "title": "You should set OCSID.CLIENTID", "url": "https://medium.com/@FranckPachot/you-should-set-ocsid-clientid-e00cb81ed7e2", "source": "medium", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "I can see my SQLcl (java) with nothing set, the JDBC thin session with MODULE, ACTION and CLIENT_IDENTIFIER, and the DBLINK session (connected to SYSTEM) with only the CLIENT_IDENTIFIER set: SQL> select username,client_identifier,module,action 2 from v$session where type='USER'; USERNAME CLIENT_IDENTIFIER MODULE ACTION __________ ___________________ ________________________ ____________ SYSTEM my Client ID oracle@db1", "relation_aware": false }, { "publication_id": "medium:e7b68cb6427d", "database": "PostgreSQL", "date": "2019-04-28", "employment_period": "cern-2018", "title": "PostgreSQL and Jupyter notebook", "url": "https://medium.com/@FranckPachot/postgresql-and-jupyter-notebook-e7b68cb6427d", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "advantage" ], "critical_signals": [], "evidence_excerpt": "I create a new notebook with New-Python3: I load the iPython SQL extension: %load_ext sql connect to the DEMO database %sql postgresql://localhost/demo and I can run some SQL statements, like: %sql select version() But I’ll not put more commands in this blog post, because that’s the main advantage of a Jupyter Notebook: show the commands, the output, and some comments.", "relation_aware": false }, { "publication_id": "medium:b3a198b5b796", "database": "Oracle Database", "date": "2019-05-05", "employment_period": "cern-2018", "title": "#VDC19 Voxxed Days CERN 2019", "url": "https://medium.com/@FranckPachot/vdc19-voxxed-days-cern-2019-b3a198b5b796", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "Oracle Switzerland offered some Cloud trials where you don’t have to put your credit card number and that’s a really good initiative, finally.", "relation_aware": false }, { "publication_id": "medium:c782d2011252", "database": "Oracle Database", "date": "2019-05-10", "employment_period": "cern-2018", "title": "Easy Oracle Cloud wallet location in the JDBC connection string", "url": "https://medium.com/@FranckPachot/easy-oracle-cloud-wallet-location-in-the-jdbc-connection-string-c782d2011252", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Easy Oracle Cloud wallet location in the JDBC connection string.", "relation_aware": false }, { "publication_id": "medium:7a97e7727b03", "database": "Oracle Database", "date": "2019-05-12", "employment_period": "cern-2018", "title": "Did you forget to allocate Huge Pages on your PostgreSQL server?", "url": "https://medium.com/@FranckPachot/did-you-forget-to-allocate-huge-pages-on-your-postgresql-server-7a97e7727b03", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Shows via pmap that PostgreSQL's huge_pages=try default silently falls back to small pages when the OS has none allocated, unlike Oracle which tries to maximize huge-page usage.", "relation_aware": false }, { "publication_id": "medium:7a97e7727b03", "database": "PostgreSQL", "date": "2019-05-12", "employment_period": "cern-2018", "title": "Did you forget to allocate Huge Pages on your PostgreSQL server?", "url": "https://medium.com/@FranckPachot/did-you-forget-to-allocate-huge-pages-on-your-postgresql-server-7a97e7727b03", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Did you forget to allocate Huge Pages on your PostgreSQL server?.", "relation_aware": false }, { "publication_id": "medium:ddb99bb7ba15", "database": "Oracle Database", "date": "2019-05-16", "employment_period": "cern-2018", "title": "I ‘fixed’ execution plan regression with optimizer_features_enable, what to do next?", "url": "https://medium.com/@FranckPachot/i-fixed-execution-plan-regression-with-optimizer-features-enable-what-to-do-next-ddb99bb7ba15", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "If you want to know more about Partial Join Evaluation, Google tells me that I blogged about this in the past: Partial Join Evaluation in Oracle 12c - Blog dbi services Do you think that it's better to write semi-join SQL statements with IN(), EXISTS(), or to do a JOIN?", "relation_aware": false }, { "publication_id": "medium:d8692a33e3d6", "database": "Oracle Database", "date": "2019-05-19", "employment_period": "cern-2018", "title": "Do you know what you are measuring with pgbench?", "url": "https://medium.com/@FranckPachot/do-you-know-what-you-are-measuring-with-pgbench-d8692a33e3d6", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "pgio I’ll use Kevin Closson ‘pgio’ which is the same approach as his ‘SLOB’ for Oracle: SLOB Resources This page will be used to offer quick links to the latest SLOB kit contents.", "relation_aware": false }, { "publication_id": "medium:2fa7ff16803b", "database": "Oracle Database", "date": "2019-05-20", "employment_period": "cern-2018", "title": "Generate your Oracle Secure External Password Store wallet from your tnsnames.ora", "url": "https://medium.com/@FranckPachot/generate-your-oracle-secure-external-password-store-wallet-from-your-tnsnames-ora-2fa7ff16803b", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Generate your Oracle Secure External Password Store wallet from your tnsnames.ora.", "relation_aware": false }, { "publication_id": "medium:15d2f9b4ca1f", "database": "PostgreSQL", "date": "2019-05-27", "employment_period": "cern-2018", "title": "PostgreSQL: measuring query activity(WAL size generated, shared buffer reads, filesystem reads,…)", "url": "https://medium.com/@FranckPachot/postgresql-measuring-query-activity-wal-size-generated-shared-buffer-reads-filesystem-reads-15d2f9b4ca1f", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "efficient" ], "critical_signals": [], "evidence_excerpt": "Update I update the ‘flag’ column to set half of the rows to ‘Y’: update DEMO set flag='Y' where n%2=0; This is the operation where PostgreSQL MVCC is less efficient.", "relation_aware": false }, { "publication_id": "medium:4d341be23764", "database": "Oracle Database", "date": "2019-06-03", "employment_period": "cern-2018", "title": "When Oracle Statistic Gathering times out.", "url": "https://medium.com/@FranckPachot/when-oracle-statistic-gathering-times-out-4d341be23764", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "When Oracle Statistic Gathering times out..", "relation_aware": false }, { "publication_id": "medium:d57a8c8c2ca9", "database": "Oracle Database", "date": "2019-06-05", "employment_period": "cern-2018", "title": "Hibernate for Oracle DBAs", "url": "https://medium.com/@FranckPachot/hibernate-for-oracle-dbas-d57a8c8c2ca9", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Hibernate for Oracle DBAs.", "relation_aware": false }, { "publication_id": "medium:5e88b12282b0", "database": "Oracle Database", "date": "2019-06-16", "employment_period": "cern-2018", "title": "A Jupyter notebook on Google Collab to connect to the Oracle Cloud ATP", "url": "https://medium.com/@FranckPachot/a-jupyter-notebook-on-google-collab-to-connect-to-the-oracle-cloud-atp-5e88b12282b0", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "A Jupyter notebook on Google Collab to connect to the Oracle Cloud ATP.", "relation_aware": false }, { "publication_id": "medium:7454432a7738", "database": "Oracle Database", "date": "2019-06-20", "employment_period": "cern-2018", "title": "Oracle/Hibernate de-queuing", "url": "https://medium.com/@FranckPachot/oracle-hibernate-de-queuing-7454432a7738", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle/Hibernate de-queuing.", "relation_aware": false }, { "publication_id": "medium:5a9281b68d72", "database": "Oracle Database", "date": "2019-06-22", "employment_period": "cern-2018", "title": "Oracle ATP: MEDIUM and HIGH services are not for OLTP", "url": "https://medium.com/@FranckPachot/oracle-atp-medium-and-high-services-are-not-for-oltp-5a9281b68d72", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle ATP: MEDIUM and HIGH services are not for OLTP.", "relation_aware": false }, { "publication_id": "medium:e991199d3d24", "database": "Oracle Database", "date": "2019-06-26", "employment_period": "cern-2018", "title": "Oracle Materialized View Refresh Group atomicity— How to prove transactional consistency with…", "url": "https://medium.com/@FranckPachot/oracle-materialized-view-refresh-group-atomicity-how-to-prove-transactional-consistency-with-e991199d3d24", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Materialized View Refresh Group atomicity— How to prove transactional consistency with….", "relation_aware": false }, { "publication_id": "medium:b60793913a4e", "database": "Oracle Database", "date": "2019-06-28", "employment_period": "cern-2018", "title": "Hi Gg,", "url": "https://medium.com/@FranckPachot/hi-gg-b60793913a4e", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Cites an Oracle support note explaining that parallel execution processes each run their own transaction coordinated by two-phase commit, so concurrent transactions can conflict.", "relation_aware": false }, { "publication_id": "medium:5466917c490f", "database": "Oracle Database", "date": "2019-07-02", "employment_period": "cern-2018", "title": "Oracle Refresh Group consistency with nested materialized views.", "url": "https://medium.com/@FranckPachot/oracle-refresh-group-consistency-with-nested-materialized-views-5466917c490f", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Materialized View Concepts and Architecture When a fast refresh is performed on a materialized view, Oracle must examine all of the changes to the master table or… docs.oracle.com But what does that mean when one materialized view depends on the other?", "relation_aware": false }, { "publication_id": "medium:f949d4802322", "database": "Oracle Database", "date": "2019-07-05", "employment_period": "cern-2018", "title": "strace -k (build with libunwind)", "url": "https://medium.com/@FranckPachot/strace-k-build-with-libunwind-f949d4802322", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Rebuilds strace with libunwind support on OEL7 to enable the -k flag, printing full C stack traces for each system call, tested by tracing the Oracle log writer process.", "relation_aware": false }, { "publication_id": "medium:2f17c98bd6db", "database": "Oracle Database", "date": "2019-07-09", "employment_period": "cern-2018", "title": "Hi Tuyen, as this removes lot of files from the Oracle Home, many features will not work.", "url": "https://medium.com/@FranckPachot/hi-tuyen-as-this-removes-lot-of-files-from-the-oracle-home-many-features-will-not-work-2f17c98bd6db", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Hi Tuyen, as this removes lot of files from the Oracle Home, many features will not work..", "relation_aware": false }, { "publication_id": "medium:ccd5baf85bf7", "database": "Oracle Database", "date": "2019-07-12", "employment_period": "cern-2018", "title": "Oracle Heterogeneous Services", "url": "https://medium.com/@FranckPachot/oracle-heterogeneous-services-ccd5baf85bf7", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Heterogeneous Services.", "relation_aware": false }, { "publication_id": "medium:d4e016e90af6", "database": "Oracle Database", "date": "2019-07-15", "employment_period": "cern-2018", "title": "Ideas for Event Sourcing in Oracle", "url": "https://medium.com/@FranckPachot/ideas-for-event-sourcing-in-oracle-d4e016e90af6", "source": "medium", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "efficient", "robust" ], "critical_signals": [], "evidence_excerpt": "[DBZ-137] Ingest change data from Oracle databases using LogMiner - JBoss Issue Tracker Edit description issues.jboss.org Oracle XStreams The perfect solution as it has minimal overhead on the source and is very efficient.", "relation_aware": false }, { "publication_id": "medium:8ffa811a7c68", "database": "Oracle Database", "date": "2019-07-20", "employment_period": "cern-2018", "title": "Oracle DBA_SQL_PLAN_BASELINE SQL_ID and PLAN_HASH_VALUE", "url": "https://medium.com/@FranckPachot/oracle-dba-sql-plan-baseline-sql-id-and-plan-hash-value-8ffa811a7c68", "source": "medium", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "Oracle DBA_SQL_PLAN_BASELINE SQL_ID and PLAN_HASH_VALUE Oracle DBA_SQL_PLAN_BASELINE SQL_ID and PLAN_HASH_VALUE There are probably better ways, so please let me know (@FranckPachot).", "relation_aware": false }, { "publication_id": "medium:3a15450dfa42", "database": "PostgreSQL", "date": "2019-07-21", "employment_period": "cern-2018", "title": "Running pgBench on YugaByteDB 1.3", "url": "https://medium.com/@FranckPachot/running-pgbench-on-yugabytedb-1-3-3a15450dfa42", "source": "medium", "evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "good", "great" ], "critical_signals": [], "evidence_excerpt": "So, one of the great features is that the query layer is compatible with PostgreSQL.", "relation_aware": false }, { "publication_id": "medium:3a15450dfa42", "database": "YugabyteDB", "date": "2019-07-21", "employment_period": "cern-2018", "title": "Running pgBench on YugaByteDB 1.3", "url": "https://medium.com/@FranckPachot/running-pgbench-on-yugabytedb-1-3-3a15450dfa42", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "pgbench --no-vacuum --builtin=simple-update --protocol=prepared --time 30 -h localhost -p 5433 -U postgres franck pgbench --no-vacuum --builtin=simple-update --protocol=prepared --time 30 -h localhost -p 5433 -U postgres franck At least I know that this basic OLTP application can run without any change on YugaByteDB and that’s a very good point for application transparency.", "relation_aware": false }, { "publication_id": "medium:3012d494712", "database": "Oracle Database", "date": "2019-07-26", "employment_period": "cern-2018", "title": "Oracle & Postgres JDBC Fetch Size", "url": "https://medium.com/@FranckPachot/oracle-postgres-jdbc-fetch-size-3012d494712", "source": "medium", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [ "possesses stated advantages" ], "critical_signals": [], "evidence_excerpt": "Oracle & Postgres JDBC Fetch Size.", "relation_aware": true }, { "publication_id": "medium:3012d494712", "database": "PostgreSQL", "date": "2019-07-26", "employment_period": "cern-2018", "title": "Oracle & Postgres JDBC Fetch Size", "url": "https://medium.com/@FranckPachot/oracle-postgres-jdbc-fetch-size-3012d494712", "source": "medium", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle & Postgres JDBC Fetch Size.", "relation_aware": false }, { "publication_id": "dbi-services:rollback-to-savepoint", "database": "Db2", "date": "2020-02-04", "employment_period": "dbi-services-2020", "title": "ROLLBACK TO SAVEPOINT;", "url": "https://www.dbi-services.com/blog/rollback-to-savepoint/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Unlike Oracle, DB2, SQL Server, and MySQL, PostgreSQL discards an entire transaction after any statement error, including a prior successful insert, unless an explicit SAVEPOINT was set before the failing statement.", "relation_aware": false }, { "publication_id": "dbi-services:rollback-to-savepoint", "database": "Microsoft SQL Server", "date": "2020-02-04", "employment_period": "dbi-services-2020", "title": "ROLLBACK TO SAVEPOINT;", "url": "https://www.dbi-services.com/blog/rollback-to-savepoint/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Unlike Oracle, DB2, SQL Server, and MySQL, PostgreSQL discards an entire transaction after any statement error, including a prior successful insert, unless an explicit SAVEPOINT was set before the failing statement.", "relation_aware": false }, { "publication_id": "dbi-services:rollback-to-savepoint", "database": "Oracle Database", "date": "2020-02-04", "employment_period": "dbi-services-2020", "title": "ROLLBACK TO SAVEPOINT;", "url": "https://www.dbi-services.com/blog/rollback-to-savepoint/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Unlike Oracle, DB2, SQL Server, and MySQL, PostgreSQL discards an entire transaction after any statement error, including a prior successful insert, unless an explicit SAVEPOINT was set before the failing statement.", "relation_aware": false }, { "publication_id": "dbi-services:rollback-to-savepoint", "database": "PostgreSQL", "date": "2020-02-04", "employment_period": "dbi-services-2020", "title": "ROLLBACK TO SAVEPOINT;", "url": "https://www.dbi-services.com/blog/rollback-to-savepoint/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "I’ve met great people there, learned interesting things about matter and anti-matter, and went out of my comfort zone like co-organizing a PostgreSQL meetup and inviting external people ( ) for visits and conferences.", "relation_aware": false }, { "publication_id": "dbi-services:running-sql-server-on-the-oracle-free-tier", "database": "Microsoft SQL Server", "date": "2020-02-08", "employment_period": "dbi-services-2020", "title": "Running SQL Server on the Oracle Free tier", "url": "https://www.dbi-services.com/blog/running-sql-server-on-the-oracle-free-tier/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Running SQL Server on the Oracle Free tier.", "relation_aware": false }, { "publication_id": "dbi-services:running-sql-server-on-the-oracle-free-tier", "database": "Oracle Database", "date": "2020-02-08", "employment_period": "dbi-services-2020", "title": "Running SQL Server on the Oracle Free tier", "url": "https://www.dbi-services.com/blog/running-sql-server-on-the-oracle-free-tier/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Running SQL Server on the Oracle Free tier.", "relation_aware": false }, { "publication_id": "dbi-services:how-sql-server-mvcc-compares-to-oracle-and-postgresql", "database": "Microsoft SQL Server", "date": "2020-02-09", "employment_period": "dbi-services-2020", "title": "How SQL Server MVCC compares to Oracle and PostgreSQL", "url": "https://www.dbi-services.com/blog/how-sql-server-mvcc-compares-to-oracle-and-postgresql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "How SQL Server MVCC compares to Oracle and PostgreSQL.", "relation_aware": false }, { "publication_id": "dbi-services:how-sql-server-mvcc-compares-to-oracle-and-postgresql", "database": "Oracle Database", "date": "2020-02-09", "employment_period": "dbi-services-2020", "title": "How SQL Server MVCC compares to Oracle and PostgreSQL", "url": "https://www.dbi-services.com/blog/how-sql-server-mvcc-compares-to-oracle-and-postgresql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "How SQL Server MVCC compares to Oracle and PostgreSQL.", "relation_aware": false }, { "publication_id": "dbi-services:how-sql-server-mvcc-compares-to-oracle-and-postgresql", "database": "PostgreSQL", "date": "2020-02-09", "employment_period": "dbi-services-2020", "title": "How SQL Server MVCC compares to Oracle and PostgreSQL", "url": "https://www.dbi-services.com/blog/how-sql-server-mvcc-compares-to-oracle-and-postgresql/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "How SQL Server MVCC compares to Oracle and PostgreSQL.", "relation_aware": false }, { "publication_id": "dbi-services:sqlnet-expire_time-and-enablebroken", "database": "Oracle Database", "date": "2020-02-15", "employment_period": "dbi-services-2020", "title": "SQLNET.EXPIRE_TIME and ENABLE=BROKEN", "url": "https://www.dbi-services.com/blog/sqlnet-expire_time-and-enablebroken/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Since Oracle Net 12c, server-side Dead Connection Detection relies on TCP keep-alive instead of a TNS packet, and tracing connect() calls on both listener and client confirms when ENABLE=BROKEN is actually still needed.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-20c-sql-macros-a-scalar-example-to-join-agility-and-performance", "database": "Oracle Database", "date": "2020-02-24", "employment_period": "dbi-services-2020", "title": "Oracle 20c SQL Macros: a scalar example to join agility and performance", "url": "https://www.dbi-services.com/blog/oracle-20c-sql-macros-a-scalar-example-to-join-agility-and-performance/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 20c SQL Macros: a scalar example to join agility and performance.", "relation_aware": false }, { "publication_id": "dbi-services:refactoring-procedural-to-sql-an-example-with-mysql-sakila", "database": "MySQL", "date": "2020-03-01", "employment_period": "dbi-services-2020", "title": "Refactoring procedural to SQL – an example with MySQL Sakila", "url": "https://www.dbi-services.com/blog/refactoring-procedural-to-sql-an-example-with-mysql-sakila/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Refactoring procedural to SQL – an example with MySQL Sakila.", "relation_aware": false }, { "publication_id": "dbi-services:yugabytedb-2-1", "database": "PostgreSQL", "date": "2020-03-08", "employment_period": "dbi-services-2020", "title": "YugaByteDB 2.1: the Open Source multi-region distributed database with PostgreSQL API is in GA with huge performance improvement", "url": "https://www.dbi-services.com/blog/yugabytedb-2-1/", "source": "dbi-services", "evaluation": 2, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "better", "better side of comparison", "improvement" ], "critical_signals": [], "evidence_excerpt": "YugaByteDB 2.1: the Open Source multi-region distributed database with PostgreSQL API is in GA with huge performance improvement.", "relation_aware": true }, { "publication_id": "dbi-services:yugabytedb-2-1", "database": "YugabyteDB", "date": "2020-03-08", "employment_period": "dbi-services-2020", "title": "YugaByteDB 2.1: the Open Source multi-region distributed database with PostgreSQL API is in GA with huge performance improvement", "url": "https://www.dbi-services.com/blog/yugabytedb-2-1/", "source": "dbi-services", "evaluation": 0, "positive_weight": 1, "critical_weight": 1, "mixed": true, "intent": "benchmark", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "improvement" ], "critical_signals": [ "slow" ], "evidence_excerpt": "YugabyteDB 2.1 GA fixed the slow pgbench initialization time seen in an earlier 1.3 beta and delivered roughly nine times higher pgbench throughput on the same 3-node, replication-factor-3 cluster.", "relation_aware": false }, { "publication_id": "dbi-services:ysql_bench", "database": "CockroachDB", "date": "2020-03-09", "employment_period": "dbi-services-2020", "title": "ysql_bench: the YugaByteDB version of pgbench", "url": "https://www.dbi-services.com/blog/ysql_bench/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "The big advantage of YugaByteDB is that the YSQL API is more than just compatibility with PostgreSQL like what CockroachDB does.", "relation_aware": false }, { "publication_id": "dbi-services:ysql_bench", "database": "PostgreSQL", "date": "2020-03-09", "employment_period": "dbi-services-2020", "title": "ysql_bench: the YugaByteDB version of pgbench", "url": "https://www.dbi-services.com/blog/ysql_bench/", "source": "dbi-services", "evaluation": 1, "positive_weight": 4, "critical_weight": 0, "mixed": false, "intent": "workaround", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 9, "positive_signals": [ "advantage", "better", "good", "possesses stated advantages" ], "critical_signals": [], "evidence_excerpt": "This has been raised in the PostgreSQL hackers’s list: pgBench retry: the “max-tries” patch Around the same time when I came with the PL/pgSQL workaround, YugabyteDB has implemented the mentioned patch in their fork of the postgres code: , which is a much better solution.", "relation_aware": true }, { "publication_id": "dbi-services:ysql_bench", "database": "YugabyteDB", "date": "2020-03-09", "employment_period": "dbi-services-2020", "title": "ysql_bench: the YugaByteDB version of pgbench", "url": "https://www.dbi-services.com/blog/ysql_bench/", "source": "dbi-services", "evaluation": 1, "positive_weight": 3, "critical_weight": 0, "mixed": false, "intent": "workaround", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [ "advantage", "named source of advantages", "reduced cost, risk, or downtime" ], "critical_signals": [], "evidence_excerpt": "This follows the previous post on testing YugaByteDB 2.1 performance with pgbench: A distributed database needs to reduce inter-node synchronization latency and then replaces two-phase pessimistic locking by optimistic concurrency control in many places.", "relation_aware": true }, { "publication_id": "dbi-services:dynamodb-covering-gsi", "database": "Amazon DynamoDB", "date": "2020-03-16", "employment_period": "dbi-services-2020", "title": "DynamoDB: adding a Global covering index to reduce the cost", "url": "https://www.dbi-services.com/blog/dynamodb-covering-gsi/", "source": "dbi-services", "evaluation": 1, "positive_weight": 3, "critical_weight": 1, "mixed": true, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "benefit", "reduced cost, risk, or downtime" ], "critical_signals": [ "expensive" ], "evidence_excerpt": "DynamoDB: adding a Global covering index to reduce the cost.", "relation_aware": false }, { "publication_id": "dbi-services:dynamodb-covering-lsi", "database": "Amazon DynamoDB", "date": "2020-03-16", "employment_period": "dbi-services-2020", "title": "DynamoDB: adding a Local covering index to reduce the cost", "url": "https://www.dbi-services.com/blog/dynamodb-covering-lsi/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "advantage", "reduced cost, risk, or downtime" ], "critical_signals": [], "evidence_excerpt": "DynamoDB: adding a Local covering index to reduce the cost.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-support-easy-export-of-sql-testcase", "database": "Oracle Database", "date": "2020-04-20", "employment_period": "dbi-services-2020", "title": "Oracle Support: Easy export of SQL Testcase", "url": "https://www.dbi-services.com/blog/oracle-support-easy-export-of-sql-testcase/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "Rather than providing those huge traces to Oracle Support, better to give an easy to reproduce test case.", "relation_aware": false }, { "publication_id": "dbi-services:tibero-i", "database": "Oracle Database", "date": "2020-04-22", "employment_period": "dbi-services-2020", "title": "티베로 – The most compatible alternative to Oracle Database", "url": "https://www.dbi-services.com/blog/tibero-i/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "technical exploration", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [ "expensive" ], "evidence_excerpt": "Many Oracle customers are looking for alternatives to the Oracle Database, because of unfriendly commercial and licensing practices, like forcing the usage of expensive options or not counting vCPU for licensing.", "relation_aware": false }, { "publication_id": "dbi-services:aws-aurora-xactsync-batch-commit", "database": "Amazon Aurora", "date": "2020-05-01", "employment_period": "dbi-services-2020", "title": "AWS Aurora IO:XactSync is not a PostgreSQL wait event", "url": "https://www.dbi-services.com/blog/aws-aurora-xactsync-batch-commit/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "AWS Aurora IO:XactSync is not a PostgreSQL wait event.", "relation_aware": false }, { "publication_id": "dbi-services:aws-aurora-xactsync-batch-commit", "database": "PostgreSQL", "date": "2020-05-01", "employment_period": "dbi-services-2020", "title": "AWS Aurora IO:XactSync is not a PostgreSQL wait event", "url": "https://www.dbi-services.com/blog/aws-aurora-xactsync-batch-commit/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "In PostgreSQL , as in most RDBMS except for exclusive fast load operations, the user session backend process writes to shared memory buffers.", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-agility-adding-attributes", "database": "Amazon DynamoDB", "date": "2020-05-07", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) agility: adding attributes", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-agility-adding-attributes/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "efficient" ], "critical_signals": [], "evidence_excerpt": "NoSQL databases like AWS DynamoDB are very efficient for those specific use cases.", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-agility-adding-attributes", "database": "MongoDB", "date": "2020-05-07", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) agility: adding attributes", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-agility-adding-attributes/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "advantage" ], "critical_signals": [], "evidence_excerpt": "— Kirk Kirkconnell (@NoSQLKnowHow) April 23, 2020 A question on StackOverflow: “Is ‘column-adding’ (schema modification) a key advantage of a NoSQL (mongodb) database over a RDBMS like MySQL” .", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-agility-adding-attributes", "database": "MySQL", "date": "2020-05-07", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) agility: adding attributes", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-agility-adding-attributes/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "— Kirk Kirkconnell (@NoSQLKnowHow) April 23, 2020 A question on StackOverflow: “Is ‘column-adding’ (schema modification) a key advantage of a NoSQL (mongodb) database over a RDBMS like MySQL” .", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-agility-adding-attributes", "database": "Oracle Database", "date": "2020-05-07", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) agility: adding attributes", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-agility-adding-attributes/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Adding a nullable column to an existing Oracle table only updates data dictionary metadata rather than every existing row, refuting the claim that adding an attribute is costlier in SQL than in a NoSQL JSON document.", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-agility-adding-attributes", "database": "YugabyteDB", "date": "2020-05-07", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) agility: adding attributes", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-agility-adding-attributes/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "YugaByte DB In a distributed database, metadata must be updated in all nodes, but this is still in milliseconds whatever the table size is: I didn’t show the test with not null and default value as I encountered an issue (adding column is fast but default value not selected).", "relation_aware": false }, { "publication_id": "dbi-services:20c-awr-now-stores-explain-plan-predicates", "database": "Oracle Database", "date": "2020-05-13", "employment_period": "dbi-services-2020", "title": "20c: AWR now stores explain plan predicates", "url": "https://www.dbi-services.com/blog/20c-awr-now-stores-explain-plan-predicates/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 20c's AWR finally stores filter and access predicates for colored SQL statements, letting DBMS_XPLAN.DISPLAY_AWR show them after bugs previously blocked Statspack and AWR from capturing predicates.", "relation_aware": false }, { "publication_id": "dbi-services:always-free-always-up-tmux-in-the-oracle-cloud-with-ksplice-updates", "database": "Oracle Database", "date": "2020-05-14", "employment_period": "dbi-services-2020", "title": "Always free / always up tmux in the Oracle Cloud with KSplice updates", "url": "https://www.dbi-services.com/blog/always-free-always-up-tmux-in-the-oracle-cloud-with-ksplice-updates/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Always free / always up tmux in the Oracle Cloud with KSplice updates.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-standard-edition-on-aws-a-socket-arithmetic", "database": "Oracle Database", "date": "2020-05-20", "employment_period": "dbi-services-2020", "title": "Oracle Standard Edition on AWS ☁ socket arithmetic", "url": "https://www.dbi-services.com/blog/oracle-standard-edition-on-aws-a-socket-arithmetic/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "The good thing is that you can even use Oracle hypervisor (OVM or KVM), LPAR or Zones to pin one socket only for the usage of Oracle, and use the other for something else.", "relation_aware": false }, { "publication_id": "dbi-services:tibero-ii", "database": "Oracle Database", "date": "2020-05-26", "employment_period": "dbi-services-2020", "title": "티베로 – The AWR-like “Tibero Performance Repository”", "url": "https://www.dbi-services.com/blog/tibero-ii/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "The compatibility with Oracle is very good so that queries on V$SESSION are the same, The only thing I changed is the SID userenv that is called TID in Tibero: SELECT ((10000000000 * (SID + SERIAL#)) + 1000000000000) INTO v_my_serial from v$session WHERE sid = ( select sys_context('userenv','tid') from dual); I got a TBR-11006: Invalid USERENV parameter before this change.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-select-from-file", "database": "Oracle Database", "date": "2020-06-04", "employment_period": "dbi-services-2020", "title": "Oracle 18c – select from a flat file", "url": "https://www.dbi-services.com/blog/oracle-select-from-file/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 18c – select from a flat file.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-index-on-joins", "database": "Oracle Database", "date": "2020-06-05", "employment_period": "dbi-services-2020", "title": "Oracle 12c – pre-built join index", "url": "https://www.dbi-services.com/blog/oracle-index-on-joins/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "Oracle's Synchronous Refresh for Materialized Views, using REFRESH FAST ON STATEMENT, behaves like a pre-built join index by storing a dimension table's country_code alongside a fact table row automatically.", "relation_aware": false }, { "publication_id": "dbi-services:what-is-a-serverless-database", "database": "Amazon Aurora", "date": "2020-06-05", "employment_period": "dbi-services-2020", "title": "What is a serverless database?", "url": "https://www.dbi-services.com/blog/what-is-a-serverless-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Serverless as not paying for the server AWS has a true serverless and elastic database offer: Amazon Aurora Serverless .", "relation_aware": false }, { "publication_id": "dbi-services:what-is-a-serverless-database", "database": "Oracle Database", "date": "2020-06-05", "employment_period": "dbi-services-2020", "title": "What is a serverless database?", "url": "https://www.dbi-services.com/blog/what-is-a-serverless-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "A serverless database means server provisioning no longer sits on a project's critical path, contrasted here with a 1996 setup where obtaining and racking Oracle Database hardware took weeks.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-row-pattern", "database": "Oracle Database", "date": "2020-06-08", "employment_period": "dbi-services-2020", "title": "Oracle 12c – peak detection with MATCH_RECOGNIZE", "url": "https://www.dbi-services.com/blog/oracle-row-pattern/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12c – peak detection with MATCH_RECOGNIZE.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12c-clustering", "database": "Oracle Database", "date": "2020-06-10", "employment_period": "dbi-services-2020", "title": "Oracle 12c – reorg and split table with clustering", "url": "https://www.dbi-services.com/blog/oracle-12c-clustering/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12c – reorg and split table with clustering.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12c-global-partial-index", "database": "Amazon DynamoDB", "date": "2020-06-10", "employment_period": "dbi-services-2020", "title": "Oracle 12c – global partial index", "url": "https://www.dbi-services.com/blog/oracle-12c-global-partial-index/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "fast" ], "critical_signals": [], "evidence_excerpt": "That’s a completely different approach from purpose-built databases where you have one database service for fast ingest with simple queries on recent data (NoSQL folks may think about DynamoDB for that), then streaming data to a relational database for more OLTP queries (RDS to continue with the AWS analogy), and move old data into a database dedicated to analytics (that could be Redshift then).", "relation_aware": false }, { "publication_id": "dbi-services:oracle-12c-global-partial-index", "database": "Oracle Database", "date": "2020-06-10", "employment_period": "dbi-services-2020", "title": "Oracle 12c – global partial index", "url": "https://www.dbi-services.com/blog/oracle-12c-global-partial-index/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle 12c – global partial index.", "relation_aware": false }, { "publication_id": "dbi-services:column-level-collate", "database": "Oracle Database", "date": "2020-06-16", "employment_period": "dbi-services-2020", "title": "Oracle non-linguistic varchar2 columns to order by without sorting", "url": "https://www.dbi-services.com/blog/column-level-collate/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle non-linguistic varchar2 columns to order by without sorting.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-ace-program", "database": "Oracle Database", "date": "2020-06-24", "employment_period": "dbi-services-2020", "title": "The Oracle ACE program ♠ what it is not ♠", "url": "https://www.dbi-services.com/blog/oracle-ace-program/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "Because I like to work with them, with Oracle Customers, with Oracle employees,… And then there are good chances that I’ll stay in the program and at the same level.", "relation_aware": false }, { "publication_id": "dbi-services:some-myths-about-postgresql-vs-oracle", "database": "Oracle Database", "date": "2020-06-24", "employment_period": "dbi-services-2020", "title": "Some myths about PostgreSQL vs. Oracle", "url": "https://www.dbi-services.com/blog/some-myths-about-postgresql-vs-oracle/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle.", "relation_aware": false }, { "publication_id": "dbi-services:some-myths-about-postgresql-vs-oracle", "database": "PostgreSQL", "date": "2020-06-24", "employment_period": "dbi-services-2020", "title": "Some myths about PostgreSQL vs. Oracle", "url": "https://www.dbi-services.com/blog/some-myths-about-postgresql-vs-oracle/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Some myths about PostgreSQL vs.", "relation_aware": false }, { "publication_id": "dbi-services:al7", "database": "Oracle Database", "date": "2020-06-30", "employment_period": "dbi-services-2020", "title": "Oracle Autonomous Linux: cron’d ksplice and yum updates", "url": "https://www.dbi-services.com/blog/al7/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "recommended" ], "critical_signals": [], "evidence_excerpt": "It can run the same kernel as RHEL but also provides, still for free, the ‘unbreakable kernel’ (UEK) which is still compatible with RHEL but enhanced with optimizations, recommended especially when running Oracle products.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-acfs-du-df", "database": "Oracle Database", "date": "2020-07-03", "employment_period": "dbi-services-2020", "title": "Oracle ACFS: “du” vs. “df” and “acfsutil info”", "url": "https://www.dbi-services.com/blog/oracle-acfs-du-df/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle ACFS: “du” vs.", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-joins-dont-scale", "database": "Oracle Database", "date": "2020-07-05", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) “joins dont scale”", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-joins-dont-scale/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "A query joining roughly 900,000 SALES rows to PRODUCTS on Oracle Autonomous Database returns in 92 milliseconds via a nested loop with index range scan, contradicting the claim that relational joins scale poorly.", "relation_aware": false }, { "publication_id": "dbi-services:the-myth-of-nosql-vs-rdbms-joins-dont-scale", "database": "PostgreSQL", "date": "2020-07-05", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) “joins dont scale”", "url": "https://www.dbi-services.com/blog/the-myth-of-nosql-vs-rdbms-joins-dont-scale/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "It says that “As the size of your tables grow, these operations will get slower and slower.” I will build those tables, in PostgreSQL here, because that’s my preferred Open Source RDBMS, and show that: Performance is not a black box: all RDBMS have an EXPLAIN command that display exactly the algorithm used (even CPU and memory access) and you can estimate the cost easily from it.", "relation_aware": false }, { "publication_id": "dbi-services:19c-scalable-top-n-queries", "database": "Oracle Database", "date": "2020-07-14", "employment_period": "dbi-services-2020", "title": "19c: scalable Top-N queries without further hints to the query planner", "url": "https://www.dbi-services.com/blog/19c-scalable-top-n-queries/", "source": "dbi-services", "evaluation": -2, "positive_weight": 0, "critical_weight": 4, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "high", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [ "bug" ], "evidence_excerpt": "Oracle 19c fixes bug 22174392 so a query using FETCH FIRST n ROWS ONLY gets correct low cardinality row estimates without needing the FIRST_ROWS() hint that was previously required in 12c.", "relation_aware": false }, { "publication_id": "dbi-services:dbpod", "database": "Oracle Database", "date": "2020-07-14", "employment_period": "dbi-services-2020", "title": "DBPod – le podcast Bases de Données", "url": "https://www.dbi-services.com/blog/dbpod/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "The DBPod podcast launched with three Oracle-focused episodes covering database versioning between 19c and 20c, Release Updates, and the Multitenant option, distributed through Anchor, Spotify, and Apple Podcasts.", "relation_aware": false }, { "publication_id": "dbi-services:a-serverless-standby-database-called-oracle-autonomous-data-guard", "database": "Oracle Database", "date": "2020-07-16", "employment_period": "dbi-services-2020", "title": "A Serverless Standby Database called Oracle Autonomous Data Guard", "url": "https://www.dbi-services.com/blog/a-serverless-standby-database-called-oracle-autonomous-data-guard/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "A Serverless Standby Database called Oracle Autonomous Data Guard.", "relation_aware": false }, { "publication_id": "dbi-services:myth-nosql-vs-rdbms-relational-queries-are-unbounded", "database": "Oracle Database", "date": "2020-07-21", "employment_period": "dbi-services-2020", "title": "The myth of NoSQL (vs. RDBMS) “a simpler API to bound resources”", "url": "https://www.dbi-services.com/blog/myth-nosql-vs-rdbms-relational-queries-are-unbounded/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "On Oracle's free Autonomous tier, Resource Manager caps CPU and I/O per service even for a SALES join to PRODUCTS, showing a relational call can be bounded like a NoSQL lookup.", "relation_aware": false }, { "publication_id": "dbi-services:a-lesson-from-nosql-vs-rdbms-listen-to-your-users", "database": "Amazon DynamoDB", "date": "2020-08-01", "employment_period": "dbi-services-2020", "title": "A lesson from NoSQL (vs. RDBMS): listen to your users", "url": "https://www.dbi-services.com/blog/a-lesson-from-nosql-vs-rdbms-listen-to-your-users/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Here is an example of myself trying to understand the metrics from a DynamoDB Scan and match it with CloudWatch metrics: Hard maths with @dynamodb 🤔 Scanned 36M items from 25 RCU/s free tier table (3GB) in 10085 seconds 👉3600 item/s = 216000 item/min 👉219 KB/s = 55*4KB/s ✅CloudWatch: 210000 scan return item/minute ❓ConsumedCapacity: 128.5 consumed CU ❓CloudWatch: 38.5 read capacity (unit/s) pic.twitter.com/r35dtTOKjO", "relation_aware": false }, { "publication_id": "dbi-services:a-lesson-from-nosql-vs-rdbms-listen-to-your-users", "database": "MongoDB", "date": "2020-08-01", "employment_period": "dbi-services-2020", "title": "A lesson from NoSQL (vs. RDBMS): listen to your users", "url": "https://www.dbi-services.com/blog/a-lesson-from-nosql-vs-rdbms-listen-to-your-users/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "powerful" ], "critical_signals": [], "evidence_excerpt": "This commercial database is very powerful and have nothing to envy to NoSQL about scalability: RAC, Hash partitioning, Parallel Query,… But when you look at the papers about MongoDB or DynamoDB the comparisons are always with MySQL.", "relation_aware": false }, { "publication_id": "dbi-services:a-lesson-from-nosql-vs-rdbms-listen-to-your-users", "database": "MySQL", "date": "2020-08-01", "employment_period": "dbi-services-2020", "title": "A lesson from NoSQL (vs. RDBMS): listen to your users", "url": "https://www.dbi-services.com/blog/a-lesson-from-nosql-vs-rdbms-listen-to-your-users/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "This commercial database is very powerful and have nothing to envy to NoSQL about scalability: RAC, Hash partitioning, Parallel Query,… But when you look at the papers about MongoDB or DynamoDB the comparisons are always with MySQL.", "relation_aware": false }, { "publication_id": "dbi-services:rdbms-scales-the-algorithm", "database": "Amazon DynamoDB", "date": "2020-08-03", "employment_period": "dbi-services-2020", "title": "RDBMS (vs. NoSQL) scales the algorithm before the hardware", "url": "https://www.dbi-services.com/blog/rdbms-scales-the-algorithm/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Comparing a hash-partitioned DynamoDB access pattern against an Oracle nested-loop index join on up to 2000 keys shows both scale predictably as matched rows per key grow, unlike the claim that RDBMS joins don't scale.", "relation_aware": false }, { "publication_id": "dbi-services:rdbms-scales-the-algorithm", "database": "Microsoft SQL Server", "date": "2020-08-03", "employment_period": "dbi-services-2020", "title": "RDBMS (vs. NoSQL) scales the algorithm before the hardware", "url": "https://www.dbi-services.com/blog/rdbms-scales-the-algorithm/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "You can read more about the inflection point where a full table scan is better than index access in a previous post: as this also applies to joins and scaling the algorithm can even happen after the SQL query compilation – at execution time – in some RDBMS ( Oracle and SQL Server for example).", "relation_aware": false }, { "publication_id": "dbi-services:rdbms-scales-the-algorithm", "database": "Oracle Database", "date": "2020-08-03", "employment_period": "dbi-services-2020", "title": "RDBMS (vs. NoSQL) scales the algorithm before the hardware", "url": "https://www.dbi-services.com/blog/rdbms-scales-the-algorithm/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "You can read more about the inflection point where a full table scan is better than index access in a previous post: as this also applies to joins and scaling the algorithm can even happen after the SQL query compilation – at execution time – in some RDBMS ( Oracle and SQL Server for example).", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-local", "database": "Amazon DynamoDB", "date": "2020-08-07", "employment_period": "dbi-services-2020", "title": "Amazon DynamoDB Local: running NoSQL on SQLite", "url": "https://www.dbi-services.com/blog/aws-dynamodb-local/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "limitation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "powerful" ], "critical_signals": [], "evidence_excerpt": "You know how to run DynamoDB locally, and can even access it with SQL for powerful queries 😉", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-local", "database": "Oracle Database", "date": "2020-08-07", "employment_period": "dbi-services-2020", "title": "Amazon DynamoDB Local: running NoSQL on SQLite", "url": "https://www.dbi-services.com/blog/aws-dynamodb-local/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL databases have optimization for full table scans, and the database for those 338498 rows is really small: [oracle@cloud aws]$ du -h /var/tmp/DynamoDBLocal/shared-local-instance.db 106M /var/tmp/DynamoDBLocal/shared-local-instance.db Counting the rows is faster from SQLite directly: [oracle@cloud aws]$ time sqlite3 /var/tmp/DynamoDBLocal/shared-local-instance.db \"select count(*) from Demo;\" 338498 real 0m0.045s us", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-local", "database": "SQLite", "date": "2020-08-07", "employment_period": "dbi-services-2020", "title": "Amazon DynamoDB Local: running NoSQL on SQLite", "url": "https://www.dbi-services.com/blog/aws-dynamodb-local/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "faster" ], "critical_signals": [], "evidence_excerpt": "SQL databases have optimization for full table scans, and the database for those 338498 rows is really small: [oracle@cloud aws]$ du -h /var/tmp/DynamoDBLocal/shared-local-instance.db 106M /var/tmp/DynamoDBLocal/shared-local-instance.db Counting the rows is faster from SQLite directly: [oracle@cloud aws]$ time sqlite3 /var/tmp/DynamoDBLocal/shared-local-instance.db \"select count(*) from Demo;\" 338498 real 0m0.045s us", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-the-cost-of-indexes", "database": "Amazon DynamoDB", "date": "2020-08-13", "employment_period": "dbi-services-2020", "title": "Amazon DynamoDB: the cost of indexes", "url": "https://www.dbi-services.com/blog/aws-dynamodb-the-cost-of-indexes/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "comparison", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Amazon DynamoDB: the cost of indexes.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-adb-rename", "database": "Oracle Database", "date": "2020-08-13", "employment_period": "dbi-services-2020", "title": "Oracle ADB: rename the service_name connect_data", "url": "https://www.dbi-services.com/blog/oracle-adb-rename/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle ADB: rename the service_name connect_data.", "relation_aware": false }, { "publication_id": "dbi-services:sql-server-on-oracle-cloud", "database": "Microsoft SQL Server", "date": "2020-08-24", "employment_period": "dbi-services-2020", "title": "SQL Server on Oracle Cloud", "url": "https://www.dbi-services.com/blog/sql-server-on-oracle-cloud/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL Server on Oracle Cloud.", "relation_aware": false }, { "publication_id": "dbi-services:sql-server-on-oracle-cloud", "database": "Oracle Database", "date": "2020-08-24", "employment_period": "dbi-services-2020", "title": "SQL Server on Oracle Cloud", "url": "https://www.dbi-services.com/blog/sql-server-on-oracle-cloud/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "SQL Server on Oracle Cloud.", "relation_aware": false }, { "publication_id": "dbi-services:data-virtualization-on-sql-server-with-redgate-sql-clone", "database": "Microsoft SQL Server", "date": "2020-08-25", "employment_period": "dbi-services-2020", "title": "Data virtualization on SQL Server with Redgate SQL Clone", "url": "https://www.dbi-services.com/blog/data-virtualization-on-sql-server-with-redgate-sql-clone/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "good" ], "critical_signals": [], "evidence_excerpt": "No problem, I have already very good contacts at Redgate even if I’m not working with SQL Server very often.", "relation_aware": false }, { "publication_id": "dbi-services:troubleshooting-autonomous-database", "database": "Oracle Database", "date": "2020-08-29", "employment_period": "dbi-services-2020", "title": "Troubleshooting performance on Autonomous Database", "url": "https://www.dbi-services.com/blog/troubleshooting-autonomous-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical exploration", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Autonomous Database's Performance Hub drills ASH activity by Consumer Group, Wait Class, and Wait Event, isolating roughly 0.86 average active sessions attributed entirely to internal background processes.", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-a-relational-glossary", "database": "Amazon DynamoDB", "date": "2020-09-17", "employment_period": "dbi-services-2020", "title": "Amazon DynamoDB: a r(el)ational Glossary", "url": "https://www.dbi-services.com/blog/aws-dynamodb-a-relational-glossary/", "source": "dbi-services", "evaluation": -1, "positive_weight": 0, "critical_weight": 1, "mixed": false, "intent": "comparison", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [ "bad" ], "evidence_excerpt": "Table This is where using the same name in DynamoDB as in SQL database can mislead to a bad data model.", "relation_aware": false }, { "publication_id": "dbi-services:amazon-or-aws-services", "database": "Amazon DynamoDB", "date": "2020-09-18", "employment_period": "dbi-services-2020", "title": "Amazon or AWS services?", "url": "https://www.dbi-services.com/blog/amazon-or-aws-services/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "AWS names standalone customer-facing services 'Amazon', like DynamoDB and RDS, while utility services operating on them, like Backup or Database Migration Service, are named 'AWS' per community naming convention.", "relation_aware": false }, { "publication_id": "dbi-services:what-is-object-storage", "database": "Oracle Database", "date": "2020-09-18", "employment_period": "dbi-services-2020", "title": "What is Object Storage?", "url": "https://www.dbi-services.com/blog/what-is-object-storage/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "He is an Oracle DBA and came to this page about Oracle Cloud Object Storage: Overview of Object Storage Oracle Cloud Infrastructure offers two distinct storage class tiers to address the need for both performant, frequently accessed “hot” storage, and less frequently accessed “cold” storage.", "relation_aware": false }, { "publication_id": "dbi-services:amazon-aurora-serverless-postgresql-compatibility", "database": "Amazon Aurora", "date": "2020-09-20", "employment_period": "dbi-services-2020", "title": "Amazon Aurora Serverless (PostgreSQL compatibility)", "url": "https://www.dbi-services.com/blog/amazon-aurora-serverless-postgresql-compatibility/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [ "advantage" ], "critical_signals": [], "evidence_excerpt": "Amazon Aurora Serverless scales on hard limits only (the instance size) but has the advantage to stop completely all compute resource when you chose the “pause” option.", "relation_aware": false }, { "publication_id": "dbi-services:amazon-aurora-serverless-postgresql-compatibility", "database": "PostgreSQL", "date": "2020-09-20", "employment_period": "dbi-services-2020", "title": "Amazon Aurora Serverless (PostgreSQL compatibility)", "url": "https://www.dbi-services.com/blog/amazon-aurora-serverless-postgresql-compatibility/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Amazon Aurora Serverless (PostgreSQL compatibility).", "relation_aware": false }, { "publication_id": "dbi-services:oracle-maa-reference-architecture-and-ha-dr-rto-rpo", "database": "Oracle Database", "date": "2020-09-26", "employment_period": "dbi-services-2020", "title": "Oracle MAA reference architecture and HA, DR, RTO, RPO", "url": "https://www.dbi-services.com/blog/oracle-maa-reference-architecture-and-ha-dr-rto-rpo/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle MAA reference architecture and HA, DR, RTO, RPO.", "relation_aware": false }, { "publication_id": "dbi-services:oracle-adb-jupyter", "database": "Oracle Database", "date": "2020-09-30", "employment_period": "dbi-services-2020", "title": "Oracle ADB from a Jupyter Notebook", "url": "https://www.dbi-services.com/blog/oracle-adb-jupyter/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "operational guidance", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle ADB from a Jupyter Notebook.", "relation_aware": false }, { "publication_id": "dbi-services:cluster", "database": "Oracle Database", "date": "2020-10-07", "employment_period": "dbi-services-2020", "title": "CLUSTER", "url": "https://www.dbi-services.com/blog/cluster/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 3, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "That’s how I know how great it is that he moves to Oracle, in the team that manages the products which are the bricks for the future (cloud managed ‘autonomous’ database).", "relation_aware": false }, { "publication_id": "dbi-services:ycsb-nosql-benchmark-on-oracle-database", "database": "Cassandra", "date": "2020-10-12", "employment_period": "dbi-services-2020", "title": "YCSB (NoSQL benchmark) on Oracle Database", "url": "https://www.dbi-services.com/blog/ycsb-nosql-benchmark-on-oracle-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "YB also provides a Cassandra-like NoSQL API: CQL and here is how to run YCSB on it: On Oracle Database, now that I have added the support for FETCH FIRST, the jdbc client can be used on a relational table.", "relation_aware": false }, { "publication_id": "dbi-services:ycsb-nosql-benchmark-on-oracle-database", "database": "Oracle Database", "date": "2020-10-12", "employment_period": "dbi-services-2020", "title": "YCSB (NoSQL benchmark) on Oracle Database", "url": "https://www.dbi-services.com/blog/ycsb-nosql-benchmark-on-oracle-database/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "architectural trade-off", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "better" ], "critical_signals": [], "evidence_excerpt": "Here is how to download the latest relase of YCSB: cd /var/tmp release=\"$(curl | awk '/[/]download[/]/{print $NF}' )\" curl --location \"$release\" | tar -zxvf - However, my Pull Request to support the FETCH FIRST n ROWS ONLY has been merged but is not yet included in the release, so better compile from source if you want to use YCSB on Oracle Database.", "relation_aware": false }, { "publication_id": "dbi-services:ycsb-nosql-benchmark-on-oracle-database", "database": "PostgreSQL", "date": "2020-10-12", "employment_period": "dbi-services-2020", "title": "YCSB (NoSQL benchmark) on Oracle Database", "url": "https://www.dbi-services.com/blog/ycsb-nosql-benchmark-on-oracle-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Among the most advanced converged databases: On PostgreSQL you can use the JDBC client or the “ postgrenosql ” that are already there in the master branch On YugaByteDB you can do the same because it is compatible with PostgreSQL with the YSQL API.", "relation_aware": false }, { "publication_id": "dbi-services:ycsb-nosql-benchmark-on-oracle-database", "database": "YugabyteDB", "date": "2020-10-12", "employment_period": "dbi-services-2020", "title": "YCSB (NoSQL benchmark) on Oracle Database", "url": "https://www.dbi-services.com/blog/ycsb-nosql-benchmark-on-oracle-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Among the most advanced converged databases: On PostgreSQL you can use the JDBC client or the “ postgrenosql ” that are already there in the master branch On YugaByteDB you can do the same because it is compatible with PostgreSQL with the YSQL API.", "relation_aware": false }, { "publication_id": "dbi-services:what-is-a-database-backup-back-to-the-basics", "database": "Oracle Database", "date": "2020-10-22", "employment_period": "dbi-services-2020", "title": "What is a database backup (back to the basics)", "url": "https://www.dbi-services.com/blog/what-is-a-database-backup-back-to-the-basics/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 2, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "A logical export like pg_dump or Oracle expdp is not a database backup, because it alone cannot support point-in-time recovery to any moment between the last export and a later failure.", "relation_aware": false }, { "publication_id": "dbi-services:what-is-a-database-backup-back-to-the-basics", "database": "PostgreSQL", "date": "2020-10-22", "employment_period": "dbi-services-2020", "title": "What is a database backup (back to the basics)", "url": "https://www.dbi-services.com/blog/what-is-a-database-backup-back-to-the-basics/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "bug diagnosis", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "TL;DR: do not consider a dump (like PostgreSQL pg_dump or Oracle expdp) as a database backup do not consider that your backup is successful if you didn’t test recovery databases provide physical database backups, easy and safe to restore and recover to any point-in-time between first backup and point of failure managed databases provide an easy recovery interface, but don’t trust it before you try it and… I’ve writte", "relation_aware": false }, { "publication_id": "dbi-services:postgresql-in-aws-clearing-the-doubts", "database": "Amazon Aurora", "date": "2020-11-09", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://www.dbi-services.com/blog/postgresql-in-aws-clearing-the-doubts/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 8, "positive_signals": [ "reduced cost, risk, or downtime" ], "critical_signals": [], "evidence_excerpt": "PostgreSQL may provide lower latency on block storage, and is probably cheaper (but Aurora serverless can also reduce the cost for rarely used databases).", "relation_aware": false }, { "publication_id": "dbi-services:postgresql-in-aws-clearing-the-doubts", "database": "Amazon DynamoDB", "date": "2020-11-09", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://www.dbi-services.com/blog/postgresql-in-aws-clearing-the-doubts/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Rather than storing the database files in EBS block storage attached to the database node where the instance is running, like all other RDS databases, the database service is split into separate (micro)services for the compute (EC2) and the storage (distributed over multiple AZ to provide High Availability, similar to the DynamoDB storage).", "relation_aware": false }, { "publication_id": "dbi-services:postgresql-in-aws-clearing-the-doubts", "database": "MySQL", "date": "2020-11-09", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://www.dbi-services.com/blog/postgresql-in-aws-clearing-the-doubts/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 5, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Amazon modified a lot the lower layers of the code but kept the upper layer to stay compatible with MySQL (version 5) in order to ease the application migration to Aurora.", "relation_aware": false }, { "publication_id": "dbi-services:postgresql-in-aws-clearing-the-doubts", "database": "Oracle Database", "date": "2020-11-09", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://www.dbi-services.com/blog/postgresql-in-aws-clearing-the-doubts/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Oracle Cloud provides no managed service for PostgreSQL but only a Bitnami image .", "relation_aware": false }, { "publication_id": "dbi-services:postgresql-in-aws-clearing-the-doubts", "database": "PostgreSQL", "date": "2020-11-09", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://www.dbi-services.com/blog/postgresql-in-aws-clearing-the-doubts/", "source": "dbi-services", "evaluation": -1, "positive_weight": 1, "critical_weight": 4, "mixed": true, "intent": "bug diagnosis", "scope": "product-wide", "evidence_backed": true, "confidence": "high", "summary_source": "curated", "explicit_mentions": 11, "positive_signals": [ "reduced cost, risk, or downtime" ], "critical_signals": [ "regression" ], "evidence_excerpt": "====================================================== The differences that caused some tests to fail can be viewed in the file \"/var/tmp/postgres/src/test/regress/regression.diffs\".", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-s3-oci-autonomous-database", "database": "Amazon DynamoDB", "date": "2020-11-16", "employment_period": "dbi-services-2020", "title": "AWS DynamoDB -> S3 -> OCI Autonomous Database", "url": "https://www.dbi-services.com/blog/aws-dynamodb-s3-oci-autonomous-database/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "Here is an example with two recent news from past months: Oracle: Use any AWS S3 compatible object store with Autonomous Database AWS: Export Amazon DynamoDB Table Data to Your Data Lake in Amazon S3, No Code Writing Required Imagine that your application stores some data into DynamoDB because it is one of the easiest serverless datastore that can scale to millions of key-value queries per second with great availabil", "relation_aware": false }, { "publication_id": "dbi-services:aws-dynamodb-s3-oci-autonomous-database", "database": "Oracle Database", "date": "2020-11-16", "employment_period": "dbi-services-2020", "title": "AWS DynamoDB -> S3 -> OCI Autonomous Database", "url": "https://www.dbi-services.com/blog/aws-dynamodb-s3-oci-autonomous-database/", "source": "dbi-services", "evaluation": 1, "positive_weight": 2, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "great" ], "critical_signals": [], "evidence_excerpt": "AWS's no-code DynamoDB-to-S3 export combined with Oracle Autonomous Database's external table support lets Oracle SQL query DynamoDB-exported JSON files directly from an S3-compatible object store.", "relation_aware": false }, { "publication_id": "dbi-services:recovery-in-the-%e2%98%81-with-oracle-autonomous-database", "database": "Oracle Database", "date": "2020-11-18", "employment_period": "dbi-services-2020", "title": "Recovery in the ☁ with Oracle Autonomous Database", "url": "https://www.dbi-services.com/blog/recovery-in-the-%e2%98%81-with-oracle-autonomous-database/", "source": "dbi-services", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Recovery in the ☁ with Oracle Autonomous Database.", "relation_aware": false }, { "publication_id": "dbi-services:aws-burstable-ec2-cloudwatch", "database": "Oracle Database", "date": "2020-11-23", "employment_period": "dbi-services-2020", "title": "AWS burstable EC2 and CloudWatch metrics", "url": "https://www.dbi-services.com/blog/aws-burstable-ec2-cloudwatch/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "possesses stated advantages" ], "critical_signals": [], "evidence_excerpt": "Oracle Database does not benefit a lot from burstable instances because the software license is paid on processor metric, which counts on full vCPU rather than the baseline, so you probably want to use 100% of it as long as you need.", "relation_aware": true }, { "publication_id": "dbi-services:dynamodb-partiql-i", "database": "Amazon DynamoDB", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "DynamoDB PartiQL – part I: INSERT", "url": "https://www.dbi-services.com/blog/dynamodb-partiql-i/", "source": "dbi-services", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": true, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "scalable" ], "critical_signals": [], "evidence_excerpt": "This is a fundamental concept in DynamoDB: in order to be scalable and predictable, there are no cross-partition operations.", "relation_aware": false }, { "publication_id": "dev.to:524266", "database": "Amazon DynamoDB", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "DynamoDB PartiQL – part I: INSERT", "url": "https://blog.dbi-services.com/dynamodb-partiql-i/", "source": "dev.to", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "new feature", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 4, "positive_signals": [ "scalable" ], "critical_signals": [], "evidence_excerpt": "This is a fundamental concept in DynamoDB: in order to be scalable and predictable, there are no cross-partition operations.", "relation_aware": false }, { "publication_id": "dev.to:524267", "database": "Oracle Database", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "AWS burstable EC2 and CloudWatch metrics", "url": "https://blog.dbi-services.com/aws-burstable-ec2-cloudwatch/", "source": "dev.to", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [ "possesses stated advantages" ], "critical_signals": [], "evidence_excerpt": "Oracle Database does not benefit a lot from burstable instances because the software license is paid on processor metric, which counts on full vCPU rather than the baseline, so you probably want to use 100% of it as long as you need.", "relation_aware": true }, { "publication_id": "dev.to:524270", "database": "Amazon Aurora", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://blog.dbi-services.com/postgresql-in-aws-clearing-the-doubts/", "source": "dev.to", "evaluation": 1, "positive_weight": 1, "critical_weight": 0, "mixed": false, "intent": "benchmark", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 7, "positive_signals": [ "reduced cost, risk, or downtime" ], "critical_signals": [], "evidence_excerpt": "PostgreSQL may provide lower latency on block storage, and is probably cheaper (but Aurora serverless can also reduce the cost for rarely used databases).", "relation_aware": false }, { "publication_id": "dev.to:524270", "database": "Amazon DynamoDB", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://blog.dbi-services.com/postgresql-in-aws-clearing-the-doubts/", "source": "dev.to", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "architectural trade-off", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Rather than storing the database files in EBS block storage attached to the database node where the instance is running, like all other RDS databases, the database service is split into separate (micro)services for the compute (EC2) and the storage (distributed over multiple AZ to provide High Availability, similar to the DynamoDB storage).", "relation_aware": false }, { "publication_id": "dev.to:524270", "database": "MySQL", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://blog.dbi-services.com/postgresql-in-aws-clearing-the-doubts/", "source": "dev.to", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "product-wide", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 6, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "Amazon modified a lot the lower layers of the code but kept the upper layer to stay compatible with MySQL (version 5) in order to ease the application migration to Aurora.", "relation_aware": false }, { "publication_id": "dev.to:524270", "database": "Oracle Database", "date": "2020-11-24", "employment_period": "dbi-services-2020", "title": "PostgreSQL in AWS: clearing the doubts", "url": "https://blog.dbi-services.com/postgresql-in-aws-clearing-the-doubts/", "source": "dev.to", "evaluation": 0, "positive_weight": 0, "critical_weight": 0, "mixed": false, "intent": "technical explanation", "scope": "specific feature or behavior", "evidence_backed": false, "confidence": "medium", "summary_source": "curated", "explicit_mentions": 1, "positive_signals": [], "critical_signals": [], "evidence_excerpt": "