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shani · Posted: Mon Aug 20, 2007 7:52 am Post subject:

I am using Web Logic 8.1 and MQ 6 (XA enabled) and facing strange scenarios as following.

I am putting 500 msgs on q1, MDB is listening to the queue and process the messages by putting them on the destination queue. During this processing I kill the server (before it can process 500 msgs) and bring it back up. When the server comes up I let it process rest of the messages and reover from any hung transactions.

1) In some instances I cannot read all 500 messages from the destination queue, say I can only read 499 messages. I cannot see the missing message on any queue. I have tried rsvmqtrn to recover from any in-doubt transaction but nothing is recovered. The only thing that help is restarting the queue manager. Once I restart the queue manager the missing message appears from somewhere and MDB can listen it and process it and put on the destination queue and I can read it from there.

2) The other scenario is that in some instances I can see the messages sitting on the destination queue i.e. MDB has read the messages from queue, processed them and put them on destination queue but once I brought up the crashed server it is unable to read that message. I have also tried rsvmqtrn but no recovery. Only thing that helps here is also queue manager recycle.

My question is:
1) Where the missing message goes before the queue manager restart? Is there any other way to recover this message without restarting the queue manager?

2) Why rsvmqtrn is not working when I can see that there are messages on the queue. Also when I try to check the in-doubt transaction by dspmqtrn -m qmanager there is nothing found.

3) Is there any way to recover from these situations withut recycling teh queue manager as this is not the optimal solution that we want to do in prod env.

Thanks for any suggestion.