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| sriramkothuri |
 Posted: Fri Apr 18, 2003 6:50 am Post subject: mq listener |
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Newbie
Joined: 04 Apr 2003
Posts: 8
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| How many listeners can be configured for a single queue manager? what are pros and cons to configure multiple listeners for a single QM. |
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| sriramkothuri |
| Posted: Mon Apr 21, 2003 7:28 am Post subject: mq listener |
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Newbie
Joined: 04 Apr 2003
Posts: 8
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| Can I get help on this issue. |
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| kevinf2349 |
| Posted: Mon Apr 21, 2003 8:20 am Post subject: |
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Grand Master
Joined: 28 Feb 2003
Posts: 1311
Location: USA
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As far as I know there is no limit on the number of listeners, only that they don't listen on the same port. We have a Qmgr with 6 and have not encountered any problems.
I think the key here is that you don't select port numbers that may be in use by other components.
It may also be worth noting that your original question was posted on a holiday (Good Friday, at least in most Christian countries), today (Easter Monday) is also a holiday in many Christian countries, therefore answers may be slow in coming. |
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| dmowskit |
| Posted: Wed Apr 23, 2003 12:00 am Post subject: about number od listeners |
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Novice
Joined: 22 Apr 2003
Posts: 10
Location: Poland
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It's true, there is no limit of number of listeners, is't depend only of resources of machine. Of course as any listener, each listener should be opened on separate free TCP port.
The question is only why use many listeners  |
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| 2189 |
| Posted: Wed Apr 23, 2003 1:17 am Post subject: |
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Apprentice
Joined: 22 Oct 2002
Posts: 31
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As far as I'm aware there shouldn't be any need to have more than one listener per queue manager. You only need one listener for all channels. If you have say 10 qmgrs putting to one qmgr, all 10 qmgrs would specifiy the same ip(port) on the sender channel. If even you had multiple channels from one qmgr to the other with different network priorities the same ip(port) would work on all of them. Why do you need more than one listener?
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2189 errors make me  |
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| kevinf2349 |
| Posted: Wed Apr 23, 2003 6:07 am Post subject: |
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Grand Master
Joined: 28 Feb 2003
Posts: 1311
Location: USA
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We have so many because it is a development Qmgr and we want to keep different areas from jumping all over other areas when they are testing things like channel exits, then we have one set up for 'firewall' traffic. (PC guys suggestion).
There may well be no requirement for more than one listener from the MQ point of view, but our organisation feels more comfortable segregating the traffic. |
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| bduncan |
| Posted: Wed Apr 23, 2003 8:56 am Post subject: |
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Padawan
Joined: 11 Apr 2001
Posts: 1554
Location: Silicon Valley
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We had a single queue manager acting as a hub with almost 3000 queue managers all talking to it. And we still only used one listener 
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IBM Certified MQSeries Specialist
MQSeries.net forum moderator |
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| sriramkothuri |
| Posted: Wed Apr 23, 2003 9:03 am Post subject: |
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Newbie
Joined: 04 Apr 2003
Posts: 8
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In our environment we have 4 applications connecting to the same port.one of the application is not closing client connections cleanly and causing the listener to hosed up.To recover the problem we are recycling the listener.and we are waiting for 15 -20 mins for the FIN-WAIT2 to clean up ,before starting the listener.
Coming to the original problem remaining 3 applications are effected by recycling the listener.
Are there are any down sides of running more than one listener. |
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