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| ilacosta |
 Posted: Wed Aug 13, 2003 2:28 am Post subject: Several hundreds of AMCRSTA on OS400 |
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Newbie
Joined: 04 Apr 2002
Posts: 7
Location: Spain
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Our scenario is one MQSeries 5.2 placed in an 0S400 and several (40) JMS clients (IBM MA88) in WAN envirnoment. They use an SVRCONN channel to put and get messages.
We end the Queue Manager every evening, and after 8 - 10 hours of execution we find about 1000 AMQCRSTA process in QMQM subsystem.
We worked on the JMS client to ensure connections are properly closed.
If we look at connections in the i-Series we find several connections to every client, but these connections are closed when they are about 2 minutes old.
We need to limit the number of AMQCRSTA.
Any idea or explication to this issue?
Thanks !!
_________________
Ignacio Lacosta
Dpt. TecnologÃa / Proyectos
RIU Hotels & Resorts
Spain |
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| leongor |
| Posted: Wed Aug 13, 2003 5:57 am Post subject: |
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Master
Joined: 13 May 2002
Posts: 264
Location: Israel
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Some suggestions :
1. Ensure you are at the latest CSD level of MQSeries on AS/400.
2. I found using threaded listener is less stressful on system.
3. Set in TCP stanza : KeepAlive=YES.
_________________
Regards.
Leonid.
IBM Certified MQSeries Specialist. |
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| ilacosta |
| Posted: Thu Aug 14, 2003 12:06 am Post subject: Resolved ! |
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Newbie
Joined: 04 Apr 2002
Posts: 7
Location: Spain
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We have made those configuration changes and the problem dissapear. I think the non threaded listener doesn't work well in WAN environment. This idea is built on the experience, not documented.
For anybody with this problem:
Changes in qm.ini:
TCP:
KeepAlive=YES (I think is the default)
Channels:
ThreeadedListener=YES
_________________
Ignacio Lacosta
Dpt. TecnologÃa / Proyectos
RIU Hotels & Resorts
Spain |
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| tellmey |
| Posted: Mon Oct 18, 2004 6:14 am Post subject: |
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Novice
Joined: 26 May 2004
Posts: 19
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| Is the threaded listener available with version 5.2 ? |
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| ilacosta |
| Posted: Mon Oct 18, 2004 7:30 am Post subject: Threaded listener available with version 5.2 iSeries |
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Newbie
Joined: 04 Apr 2002
Posts: 7
Location: Spain
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Yes, it is.
And I did a mistake, the correct is:
ThreadedListener=YES
and NOT
ThreeadedListener=YES
_________________
Ignacio Lacosta
Dpt. TecnologÃa / Proyectos
RIU Hotels & Resorts
Spain |
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| tellmey |
| Posted: Mon Oct 18, 2004 7:37 am Post subject: |
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Novice
Joined: 26 May 2004
Posts: 19
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Thanks a lot for your reply.
Do you know if we need to use a threaded library(LIBMQM_R) to bound the code to when using threaded listener ? and LIBMQM when using nonthreaded listener ?
Does it matter at all if we use threaded or nonthreaded libraries ? |
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