ADSM-L

Re: Recovery log utilization does not drop after DB backup

2001-05-30 09:07:41
Subject: Re: Recovery log utilization does not drop after DB backup
From: Jeff Bach <jdbach AT WAL-MART DOT COM>
Date: Wed, 30 May 2001 08:08:34 -0500
Yes,  the server will start terminating sessions at 100%.  If this resolves
the issue, it will usually recover, else it will core dump with a LOGSEG
error.
Jeff Bach
Home Office Open Systems Engineering
Wal-Mart Stores, Inc.

WAL-MART CONFIDENTIAL


        -----Original Message-----
        From:   Suad Musovich [SMTP:suad AT CCU1.AUCKLAND.AC DOT NZ]
        Sent:   Wednesday, May 30, 2001 1:29 AM
        To:     ADSM-L AT VM.MARIST DOT EDU
        Subject:        Re: Recovery log utilization does not drop after DB
backup

        > some time ago I complained in a mail to this list that the
recovery log
        > utilization is not reset after a database backup. APAR IC30181 was
generated
        > for this problem. Its status is "open".

        I complained about the problem too. The response I got was, when the
system was
        too busy it took a while for it to happen.

        I have done this when no sessions/processes were running on the
system and it still
        took over an hour to reset itself.

        Our situation is worse as sometimes the log jumps up to over 90%
before we start to
        backup (triggered by a ANR0314W). It has continued to increase after
the backup
        and has got to 98% in one observed instance. Will it stop sessions
if it gets to 100?

        The reason we don't have a auto triggered backup is that we use a
manual tape
        drive (LTO is a bit of a waste for incrementals).

        Suad
        --


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