{ "date": "2014-05-12T08:58:00", "slug": "exploring-oracle-se-a-ee-performance-statistics-with-orachrome-lighty", "link": "https://www.dbi-services.com/blog/exploring-oracle-se-a-ee-performance-statistics-with-orachrome-lighty/", "title": { "rendered": "Exploring Oracle SE & EE performance statistics with Orachrome Lighty" }, "content": { "rendered": "

By Franck Pachot

\n

.

\n
    \nAt dbi services, we really like Lighty for Oracle, a tool which helps exploring performance statistics whether they originate from AWR (available only in Enterprise Edition with Diagnostic Pack option) or from Statspack (available via Standard Edition). As a matter of fact, we like it so much that we have became Orachrome Partner.

    \n

    If you want to try it out for yourselves, there is a free trial here. If you have Statspack installed (see spdoc.txt in ORACLE_HOME/rdbms/admin to install it), you can immediately use Lighty.

    \n

    Let me show you how to install it. First, you have to define a connection (shortcut: Ctrl-A):

    \n

    \"CaptureLighty001.PNG\"

    \n

    It is a jdbc connection without the need to install anything else. You just need the listener host, port, and service:

    \n

    \"CaptureLighty002.PNG\"

    \n

    As you are on Oracel Standard Edition, you don’t have Diagnostic Pack nor tuning Pack.
    \nBut you have installed Statspack, and you will install L-ASH very soon:

    \n

    \"CaptureLighty003.PNG\"

    \n

    Now, you can install L-ASH as documented. But the goal of this post is to show what you can get it immediately. Go to the menu: Reports > DB Statistics > Past Activity (Statspack)
    \nYou can select a day and see the snapshots. The color bar immediately shows when the activity was high:

    \n

    \"CaptureLighty004.PNG\"

    \n

    Then you can choose the graphical equivalent for my preferred Statspack sections:
    \nTop Events:

    \n

    \"CaptureLighty005.PNG\"

    \n

    Top Segments (change the Statspack level to 7 for that):

    \n

    \"CaptureLighty007.PNG\"

    \n

    And of course Top SQL Statements:

    \n

    \"CaptureLighty006.PNG\"

    \n

    For each statement (click on its sql_id) you will have everything: SQL text, execution plan, statistics.
    \nIf you like the tool, it’s time to go further and install L-ASH so that you can mine from the Activity Viewer tab, which is the most valuable feature of Lighty for Oracle.

    \n", "protected": false } }