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| Lost messages in DQM |
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| Mr Butcher |
 Posted: Mon Aug 31, 2009 9:51 pm Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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it is the message persistence that counts, not the DEFPSIST on the queues (maybe only the first queue resolved for MQPUT if application is using persistence as q def).
ok, so your messages are persistent? fine.
immediate qmgr shutdown? so you shut it down manually or by automation while broker is up? and then you wonder why the broker is complaining and throwing errors? why dont you shut down the applications first, and then MQ?
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Regards, Butcher |
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| aaryan |
| Posted: Mon Aug 31, 2009 10:22 pm Post subject: |
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Newbie
Joined: 25 Aug 2009
Posts: 6
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| Mr Butcher wrote: |
| immediate qmgr shutdown? so you shut it down manually or by automation while broker is up? and then you wonder why the broker is complaining and throwing errors? why dont you shut down the applications first, and then MQ? |
Actualy we are getting this scenario in production environment and there we have clustering of AIX boxes. If one box goes down then other takes its load. And if one box fails due to some reason then QM goes down abruptly and hence can't wait it to be shutdown in a controlled manner........ |
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| Mr Butcher |
| Posted: Mon Aug 31, 2009 10:27 pm Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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if you shut down the consuming application, then let the sending application place a message in the queue so you see it in mqseries, then perform a cluster failover including mq shutdown / restart, is the message still there?
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Regards, Butcher |
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| exerk |
| Posted: Tue Sep 01, 2009 10:31 am Post subject: Re: RE: Lost messages in DQM |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| aaryan wrote: |
| ...but messages are kept persistence... |
Then if your message is 'disappearing' at the time the queue manager is going down, 'something' may be getting the message just as the queue manager is breaking the handle, and whatever that 'something' is that is getting the message isn't doing it in sync-point, can't roll it back, and is discarding the content - just a theory, and happy to be shot down in flames...
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It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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