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statspack purge automate

Posted on 2016-11-02
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Last Modified: 2016-11-02
I need to setup - automate - statspack purge
oracle 11g on aix 7.1
can someone show me how to setup this job so that it will run once a week?
not sure how I find out how old the records are for statspack
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Question by:bkreynolds48
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sdstuber earned 500 total points
ID: 41870519
Try something like this...

BEGIN
    DBMS_SCHEDULER.create_job(
        job_name          => 'PURGE_STATS_PACK',
        job_type          => 'PLSQL_BLOCK',
        job_action        => q'[DECLARE
    v_purge_count   INTEGER;
    v_threshold     DATE := SYSDATE - 7; -- delete snapshots older than one week
BEGIN
    FOR x IN (  SELECT dbid,
                       instance_number,
                       MIN(snap_id) min_snap,
                       MAX(snap_id) max_snap,
                       MIN(snap_time) min_time
                  FROM stats$snapshot
                 WHERE snap_time < v_threshold
              GROUP BY dbid, instance_number
              ORDER BY min_time)
    LOOP
        v_purge_count :=
            statspack.purge(
                i_begin_snap        => x.min_snap,
                i_end_snap          => x.max_snap,
                i_snap_range        => TRUE,
                i_extended_purge    => TRUE,
                i_dbid              => x.dbid,
                i_instance_number   => x.instance_number
            );
        DBMS_OUTPUT.put_line(
               'DBID: '
            || x.dbid
            || ' Instance: '
            || x.instance_number
            || ' Snapshots purged: '
            || v_purge_count
        );
    END LOOP;
END;]',
        start_date        => SYSDATE,
        repeat_interval   => 'FREQ=weekly',
        enabled           => TRUE,
        comments          => 'Job to periodically purge old statspack snapshots'
    );
END;
/

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Alternatively,  put the pl/sql block into a stored procedure and then call the procedure instead of the block.

Note the purge procedure also has parameters for specifying date ranges, but I wrote it this way so I could test the query and check the ranges of snapshots myself prior to submitting them to a purge.
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by:bkreynolds48
ID: 41870594
how do I set this up then to purge?
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Author Comment

by:bkreynolds48
ID: 41870595
I only want to keep 60 days
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LVL 74

Expert Comment

by:sdstuber
ID: 41870597
>>>> how do I set this up then to purge?

what do you mean?  that's exactly what it does


>>>> I only want to keep 60 days

change    SYSDATE - 7    to SYSDATE - 60
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Author Comment

by:bkreynolds48
ID: 41870642
does the job then run right away and then weekly?  or do I have to manually execute it?
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LVL 74

Expert Comment

by:sdstuber
ID: 41870668
it will be submitted to run immediately if you leave this...

start_date        => SYSDATE,


if you want it to start at some other time,  change SYSDATE to the date/time you want
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Author Closing Comment

by:bkreynolds48
ID: 41870688
thanks for you help
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