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MQSeries.net Forum Index » General IBM MQ Support » OPPROCS Question

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kottaiajmel
PostPosted: Fri Aug 17, 2007 6:22 am    Post subject: OPPROCS Question Reply with quote

Novice

Joined: 11 Feb 2004
Posts: 14

Hi!

One of the applications that is putting messages to my queue is not closing its connections properly. I am seeing multiple OPPROCS in the queue as a result. I want to know whether these processes gets timed out (like channels going to inactive state as a anomaly ). Any inputs? The reason why I am putting this question is because, I see the OPPROCS at around 10, and not a large number. It is never a huge number even though there is considerable traffic in the queue.

Thanks,
Ajmel
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elvis_gn
PostPosted: Fri Aug 17, 2007 9:34 am    Post subject: Reply with quote

Padawan

Joined: 08 Oct 2004
Posts: 1905
Location: Dubai

Hi kottaiajmel,

You should look at your applications which are connected to this queue, and make sure that they disconnect after their work is done....expecting them to timeout etc is not the way to go.

Regards.
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fjb_saper
PostPosted: Fri Aug 17, 2007 9:44 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

If it is stable at 10, maybe you have 10 instances putting to the queue or 10 threads putting to the queue, or 10 cluster senders putting to the queue? This is not necessarily a proof that the application does not close its connections. If the opprocs survive the shutdown of the application though I would make sure the application disconnects properly...

At the same time I would use the queue status information to check that the opprocs are not a result of a channel putting information to the queue.

As long as that channel is active the opprocs may remain open.
We use stop channel(SSS) mode(Quiesce) status(inactive) on the sender channels to remove obsolete opprocs from the receiving queue(this allows us to clear the queue).

Enjoy
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kottaiajmel
PostPosted: Thu Aug 23, 2007 10:48 am    Post subject: Reply with quote

Novice

Joined: 11 Feb 2004
Posts: 14

Thanks for the replies.

elvis_gn
I agree that the sending application must close their connections gracefully. I found this while investigating another issue of message duplication. This is an existing application in production. I hope they will make necessary changes to correct the connection problem.

fjb_saper,
The number of connections is not stable at 10. I was guesstimating that number. What I meant was the OPPROCS was not going at an alarmingly high number... When u say, "As long as that channel is active the opprocs may remain open", does that mean the OPPROCs will go to zero when the channel becomes inactive?
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fjb_saper
PostPosted: Thu Aug 23, 2007 4:56 pm    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

Only the ones related to that channel will be removed when the channel goes inactive...
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