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| Websphere MQ Queue Manager on AIX box Hangs |
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Message
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| satishnagarathnam |
 Posted: Tue Feb 10, 2004 7:07 am Post subject: Websphere MQ Queue Manager on AIX box Hangs |
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Novice
Joined: 05 Dec 2003
Posts: 11
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We are using Mercator Integration Broker V6.7 with Websphere MQ 5.3 on AIX Operating System V5.2.The MQ Queue Manager on
AIX Box is communicating with AS400 queue Manager.We are using Websphere MQ distributed queueing.
At AIX Box,we have 60+ local queues has been defined and have 60+ listeners Mercator Maps,which will pick up the messages
from the Local Queues.
We are experiencing problem with Websphere Queue Manager Hanging in AIX Box,because of this no communication is happening
to AS-400 QMgr.So in this scenario we have to bring down the Websphere MQ Queue Manager abnormally by killing all the
processes. In this context we even have to bring down and start the Mercator Event Server.Without starting the Mercator Server
it is not Picking up the messages from the queues.
Normally when queue manager hangs, it generates the Following FDC's
| ========================================= |
| |
| Date/Time :- Friday December 05 10:26:35 UTC 2003 |
| Host Name :- europa_mer2 (AIX 5.2) |
| PIDS :- 5724B4101 |
| LVLS :- 530 |
| Product Long Name :- WebSphere MQ for AIX |
| Vendor :- IBM |
| Probe Id :- XC307040 |
| Application Name :- MQM |
| Component :- xlsRequestMutex |
| Build Date :- Oct 12 2002 |
| CMVC level :- p000-L021011 |
| Build Type :- IKAP - (Production) |
| UserID :- 00000214 (mercqa) |
| Program Name :- launcher |
| Process :- 00104218 |
| Thread :- 00000001 |
| QueueManager :- EM2BRKR02 |
| Major Errorcode :- xecL_W_LONG_LOCK_WAIT |
| Minor Errorcode :- OK |
| Probe Type :- MSGAMQ6150 |
| Probe Severity :- 3 |
| Probe Description :- AMQ6150: WebSphere MQ semaphore is busy. |
| FDCSequenceNumber :- 0
WebSphere MQ First Failure Symptom Report |
| ========================================= |
| |
| Date/Time :- Friday December 05 09:44:03 UTC 2003 |
| Host Name :- europa_mer2 (AIX 5.2) |
| PIDS :- 5724B4101 |
| LVLS :- 530 |
| Product Long Name :- WebSphere MQ for AIX |
| Vendor :- IBM |
| Probe Id :- XC338001 |
| Application Name :- MQM |
| Component :- xehAsySignalHandler |
| Build Date :- Oct 12 2002 |
| CMVC level :- p000-L021011 |
| Build Type :- IKAP - (Production) |
| UserID :- 00000007 (mercqa) |
| Program Name :- runmqsc |
| Process :- 00042590 |
| QueueManager :- EM2BRKR02 |
| Major Errorcode :- xecE_W_UNEXPECTED_ASYNC_SIGNAL |
| Minor Errorcode :- OK |
| Probe Type :- MSGAMQ6209 |
| Probe Severity :- 3 |
| Probe Description :- AMQ6209: An unexpected asynchronous signal (2 : |
| SIGINT) has been received and ignored. |
| FDCSequenceNumber :- 0 |
| Arith1 :- 2 2 |
| Arith2 :- 42590 a65e |
| Comment1 :- SIGINT |
| |
| |
+-----------------------------------------------------------------------------+
We are in touch with IBM Support,They had come up with certain suggestions with Applying Certain APAR to AIX Operating
System,and suggested to Set the environment Variables to AIXTHREAD_SCOPE=S and AIXTHREAD_MNRATIO=1:1. But nothing
Worked out yet. Even we rebooted the AIX box. But the Queue Manager still hangs.
Does anyone using Websphere MQ 5.3 on AIX Box experienced this problem. Please do give some tips and suggestions regarding
this.Even i have a doubt whether the Mercator Listeners is causing the problem to hang Websphere MQ , as there were 60 Listeners
listening for incoming messages.
Thanks and Regards
N.Satish 
_________________
N.Satish |
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| JLRowe |
| Posted: Tue Feb 10, 2004 9:09 am Post subject: |
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|
Yatiri
Joined: 25 May 2002
Posts: 664
Location: South East London
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I would suggest the problem is caused by a combination of Mercator with MQ.
It may not be releasing connections/resources and causing your QM to fall over.
I last used Mercator 4 years ago, and in my honest opinion the event server was the biggest pile of junk I have ever seen. I sincerely hope the quality of the product has improved since then. |
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| satishnagarathnam |
| Posted: Tue Feb 10, 2004 11:48 am Post subject: |
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Novice
Joined: 05 Dec 2003
Posts: 11
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Hi Thanks for the reply.............Any more information would like to give to prove that mercator is causing the problem.
Thanks and Regards
N.Satish
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N.Satish |
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