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| iavork |
 Posted: Mon Jun 18, 2007 7:49 am Post subject: MDB on temporary queue? |
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Newbie
Joined: 10 Apr 2006
Posts: 9
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| Is there a chance to deploy MDB to listen on a temporary queue? |
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| jefflowrey |
| Posted: Mon Jun 18, 2007 8:28 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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What happens when you try it?
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I am *not* the model of the modern major general. |
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| fjb_saper |
| Posted: Mon Jun 18, 2007 12:20 pm Post subject: Re: MDB on temporary queue? |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| iavork wrote: |
| Is there a chance to deploy MDB to listen on a temporary queue? |
Don't know if it can or can't work; it just doesn't make much sense though.
If you are in a request/reply mode you should just to do a receive(timeout) against the temp queue.
Anyways if your selector changes this makes even less sense.
Review what you are trying to do and tell us what it is and how you are thinking of implementing it...
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| iavork |
| Posted: Tue Jun 19, 2007 1:43 am Post subject: |
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Newbie
Joined: 10 Apr 2006
Posts: 9
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Well, we have several types of batch processes, we want to publish each batch as many messages and process the messages in parallel. We want to use MDB. We want to be able to execute two or more different batches in parallel as well, so we need different queues, but we would like to avoid the waste of system resources having many listeners running all of the time.
- is it possible to enable/disable the listener/MDB?
- about the temporary queue - we want to use a temporary queue as if we interrupt the batch we want the queue be flushed. This might be a bad idea... |
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| fjb_saper |
| Posted: Tue Jun 19, 2007 2:52 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Using a temporary queue for this process does not make any sense.
You need to use a predefined permanent queue. To use an MDB is fine.
Make sure you have a bothresh defined. Make sure the MDB retry count > bothresh. And make sure you set the MDB max instance on your queue accordingly to your parallel processing needs.
By the way, with those settings there is no message affinity allowed...
Last but not least make sure your qcf has Fail if quiesce enabled.
Enjoy 
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Last edited by fjb_saper on Tue Jun 19, 2007 2:53 am; edited 1 time in total |
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| marcin.kasinski |
| Posted: Tue Jun 19, 2007 2:52 am Post subject: |
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Sentinel
Joined: 21 Dec 2004
Posts: 850
Location: Poland / Warsaw
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| iavork wrote: |
- is it possible to enable/disable the listener/MDB?
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In WAS you can start /stop listener port. (MDB listener)
| iavork wrote: |
- about the temporary queue - we want to use a temporary queue as if we interrupt the batch we want the queue be flushed. This might be a bad idea... |
I don't now. I don't feel it.
I can imagine temporary in standard req-resp scenario, but here...
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| iavork |
| Posted: Tue Jun 19, 2007 4:53 am Post subject: |
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Newbie
Joined: 10 Apr 2006
Posts: 9
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Thanks a lot for all your comments.
Marcin, do we need to use JMX to stop/start the listener ports? Is it possible somehow to maintain the listener port in JMS only? |
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| marcin.kasinski |
| Posted: Tue Jun 19, 2007 5:06 am Post subject: |
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Sentinel
Joined: 21 Dec 2004
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