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| JVM Heap Size and Queue depth lost |
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| mzm.shan |
 Posted: Mon Oct 05, 2015 4:45 am Post subject: JVM Heap Size and Queue depth lost |
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Apprentice
Joined: 25 Aug 2013
Posts: 39
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dear all,
i am facing a problem of reaching heapsize to it optimum level.
In this condition i observe that Queues stop reading any more message and depth locked to an specific number of message. to get away from this position so that queue should again accept message and should start reading....i had to clear all messages in the depth by losing all message of that particular time. thats not good at all........
what is the way to save those message and still resolve the jvm issue? |
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| Vitor |
| Posted: Mon Oct 05, 2015 4:54 am Post subject: Re: JVM Heap Size and Queue depth lost |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| mzm.shan wrote: |
| what is the way to save those message and still resolve the jvm issue? |
Fix the reading application, especially if the "reading application" is a flow with an MQGet node wired in any kind of loop. That construction is a great way to run out of heap really, really quickly.
The queue manager itself doesn't use heap, so that's going to be unaffected by any heap issues. Likewise, queues don't read messages (as you asserted), applications do.
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| mqjeff |
| Posted: Mon Oct 05, 2015 4:55 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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There should be absolutely no correlation between the JVM heap size of an EG/Integration Server, and the ability of an MQ Queue to receive messages.
Perhaps you should attempt to examine the definition of the queue and compare it to this specific number of messages.
Perhaps you should consult with your MQ administrator.
Perhaps you should review how your flow handles MQ transactions.
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