ADSM-L

Re: ADSM Recovery log growing

1996-07-06 12:23:46
Subject: Re: ADSM Recovery log growing
From: Dwight Cook <decook AT AMOCO DOT COM>
Date: Sat, 6 Jul 1996 11:23:46 -0500
Item Subject: ADSM Recovery log growing
     Is AIX doing the mirroring or ADSM ?
     and what about the DB is it mirrored ?  If ADSM mirrored are you
     normal & parallel ? are there other tasks running that might not be
     letting the commits happen ?



______________________________ Reply Separator _________________________________
Subject: ADSM Recovery log growing
Author:  ADSM-L at unix,sh/DD.RFC-822=ADSM-L AT VM.MARIST DOT EDU
Date:    7/5/96 3:33 PM


From: Mike Knight, ISSC Aerospace, (314)234-5096, KNIGHTM at ISSCVM
Inet:                                             KNIGHTM AT VNET.IBM DOT COM
Subject: ADSM Recovery log growing

1. I have noticed a condition where the ADSM recovery log keeps growing
   when a client backup process is waiting for access to a tape being used
   by a migration process.  The log's %Util goes up until either the migration
   process releases the tape or the log hits 99.9% which causes the server to
   perform "recovery log compression".  Then the log goes back to below 1%.

2. I can recreate this regularly by backing up two large Solaris clients
   from scratch.  Has anybody else seen this?  We have a similar, but less
   well defined problem on one ADSM Version 1 server which causes the
   server to hang and all sessions to fail.

3. We are running ADSM/6000 2.1.0.7 on AIX 4.1.4 with collocation on.
   Backups go to disk with files over 5MB direct to tape.  The recovery
   log is 800MB on mirrored raw disks.  TXNGROUPMAX=40, MOVEBATCHSIZE=128,
   MOVESIZETHRESH=100, TXNBYYELIMIT=25600, LOGMODE=NORMAL.

         Mike (not ADSM support) Knight
<Prev in Thread] Current Thread [Next in Thread>