{ "date": "2015-12-21T15:43:50", "slug": "ocm-12c-preparation-restore-voting-disks-ocr-and-asm-spfile", "link": "https://www.dbi-services.com/blog/ocm-12c-preparation-restore-voting-disks-ocr-and-asm-spfile/", "title": { "rendered": "OCM 12c preparation: restore Voting disks, OCR and ASM spfile" }, "content": { "rendered": "

By Franck Pachot

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\nAs in the previous posts, here are a few commands I used to check that I know how to restore the cluster mandatory files in 12c. It’s what I’m doing while preparing the OCM 12c exam, but without any clue about what will be at the exam.
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\nFor more details, it’s in the MOS note 1062983.1

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OCR

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Here are the OCR backups:

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\n[root@racp1vm1 ~]# ocrconfig -showbackuploc\nThe Oracle Cluster Registry backup location is [/u01/app/12.1.0/grid_1/cdata/]\n[root@racp1vm1 ~]# ocrconfig -showbackup\n \nracp1vm1     2015/11/24 17:23:27     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup00.ocr     3467666221\nracp1vm1     2015/11/24 13:23:26     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup01.ocr     3467666221\nracp1vm1     2015/11/24 09:23:26     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup02.ocr     3467666221\nracp1vm1     2015/11/23 07:14:45     /u01/app/12.1.0/grid_1/cdata/ws-dbi/day.ocr     0\nracp1vm1     2015/11/23 07:14:45     /u01/app/12.1.0/grid_1/cdata/ws-dbi/week.ocr     0\nracp1vm1     2015/12/18 20:28:50     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup_20151218_202850.ocr     3467666221\nracp1vm1     2015/12/18 20:28:42     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup_20151218_202842.ocr     3467666221\nracp1vm1     2015/12/18 20:28:40     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup_20151218_202840.ocr     3467666221\nracp1vm1     2015/11/23 09:53:43     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup_20151123_095343.ocr     3467666221\nracp1vm1     2015/11/23 01:33:18     /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup_20151123_013318.ocr     0\n
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We need to stop Grid Infrastructure on all nodes

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\n[root@racp1vm1 ~]# crsctl stop crs -f\nCRS-4639: Could not contact Oracle High Availability Services\nCRS-4000: Command Stop failed, or completed with errors.\n \n[root@racp1vm1 ~]# crsctl stop crs -f\nCRS-4639: Could not contact Oracle High Availability Services\nCRS-4000: Command Stop failed, or completed with errors.\n
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and start it in exclusive mode without starting CRSD

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\n[root@racp1vm1 ~]# crsctl start crs -h\nUsage:\n  crsctl start crs [-excl [-nocrs] [-cssonly]] | [-wait | -waithas | -nowait] | \n \n[-noautostart]\n     Start OHAS on this server\nwhere\n     -excl        Start Oracle Clusterware in exclusive mode\n     -nocrs       Start Oracle Clusterware in exclusive mode without starting CRS\n     -nowait      Do not wait for OHAS to start\n     -wait        Wait until startup is complete and display all progress and \n \nstatus messages\n     -waithas     Wait until startup is complete and display OHASD progress and \n \nstatus messages\n     -cssonly     Start only CSS\n     -noautostart Start only OHAS\n
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\n[root@racp1vm1 ~]# crsctl start crs -excl -nocrs\n
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Then we are able to restore the OCR:

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\n[root@racp1vm1 grid]# ocrconfig -restore /u01/app/12.1.0/grid_1/cdata/ws-dbi/backup_20151123_095343.ocr\n
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Voting disks

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Here are my voting disks:

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\n[root@racp1vm1 grid]# crsctl query css votedisk\n$##  STATE    File Universal Id                File Name Disk group\n--  -----    -----------------                --------- ---------\n 1. ONLINE   22bf1a8f5f634fafbf521c83d8bf5982 (/dev/sdb1) [DATA]\nLocated 1 voting disk(s).\n
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I can delete it and re-create it:

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\n[root@racp1vm1 grid]# crsctl delete css votedisk +DATA\nCRS-4611: Successful deletion of voting disk +DATA.\n
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\n[root@racp1vm1 grid]# crsctl replace votedisk +DATA\nSuccessful addition of voting disk 67ad2282347d4f77bf2151e0a7c10105.\nSuccessfully replaced voting disk group with +DATA.\nCRS-4266: Voting file(s) successfully replaced\n
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ASM spfile

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Here I’m removing the ASM spfile withotu having a backup:

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\nASMCMD> spget\n+DATA/ws-dbi/ASMPARAMETERFILE/registry.253.896481653\nASMCMD> rm +DATA/ws-dbi/ASMPARAMETERFILE/registry.253.896481653\n
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But I can get the non-default parameters from the alert.log:

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\n[root@racp1vm1 ~]# adrci exec='set home +ASM1 ; show alert'\nG\n?non-default\n
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and paste them to a pfile. Note that I have to add the instance_type which is not listed as non-default:

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\ncat > /tmp/spfile.txt\n  large_pool_size          = 12M\n  remote_login_passwordfile= \"EXCLUSIVE\"\n  asm_diskgroups           = \"ACFSDG\"\n  asm_diskgroups           = \"FRA\"\n  asm_power_limit          = 1\ninstance_type='asm'\n
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Then re-create spfile:

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\n[grid@racp1vm1 ~]$ sqlplus / as sysasm\n \nSQL*Plus: Release 12.1.0.2.0 Production on Fri Dec 18 21:35:25 2015\n \nCopyright (c) 1982, 2014, Oracle.  All rights reserved.\n \nConnected to:\nOracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production\nWith the Real Application Clusters and Automatic Storage Management options\n \nSQL> create spfile='+DATA' from pfile='/tmp/spfile.txt';\nFile created.\n
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Now ready to restart the cluster:

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\n[root@racp1vm1 grid]# crsctl stop crs -f\n[root@racp1vm1 grid]# crsctl start crs\n
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