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MQSeries.net Forum Index » General Discussion » Active log & backup Issue

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PhiliB
PostPosted: Wed Apr 26, 2006 2:14 am    Post subject: Active log & backup Issue Reply with quote

Novice

Joined: 16 Sep 2004
Posts: 21
Location: Portsmouth
Morning All

I have a strange problem that possibly someone may have seen before .
We have a Queue Manager which shuts down over the weekend and (via TWS) performs some actions. The basics of it being the QMGR is stopped and then a backup of the mqm filesystems is taken.

I have an instance where the backups failed. The reason the backup failed was that the
" /var/mqm/log/<qmgrname>/active/S0003658.LOG changed during processing " also in the error log is
" /var/mqm/qmgrs/<qmgrname>/qmanager/QMQMOBJCAT changed during processing "

I have checked the AMQERR01.LOG and can see that the queue manager shutdown sucessfully at 03:01.10 am .. The backups started 1 min later.

I would have thought that the ACTIVE logs should not be written to when the specific queue manager is down.

Has anyone come across this before or know of any reason why those two particular logs would have been modified.
OS=AIX MQ5.3 (CSD 5)

Thanks as ever

Phil
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fjb_saper
PostPosted: Wed Apr 26, 2006 3:54 pm    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
Did you check what type of entry hit the log? Perhaps from an MDB access?
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PhiliB
PostPosted: Thu Apr 27, 2006 1:53 am    Post subject: Reply with quote

Novice

Joined: 16 Sep 2004
Posts: 21
Location: Portsmouth
Hi
No I couldnt see what type of entry it was .. however it wouldnt have been the Message Driven Been type.
Rgds

Phil
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fjb_saper
PostPosted: Thu Apr 27, 2006 2:16 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
Post what type of entry hit the log:
/var/mqm/qmgrs/<QMGRNAME>/errors/*00?.LOG

Hopefully it is still in scope and has not yet been overwritten.

If there is none, did you do any maintenance on linear logs (archiving) at the time (or in between when the backup took stock of the files and went to back them up)?

How about a runmqsc process that never got closed properly (still open in the background, user left the session)?

Note: If the qmgr wrote into the log that it shutdown it does not mean that there is no more process talking to it and that you can start it again. If you had tried to start it, it might have told you that process xyz was still running and therefore it could not start...

Enjoy
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