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| Non-responsive queue manager |
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| pgorak |
 Posted: Fri Jul 11, 2003 5:31 am Post subject: Non-responsive queue manager |
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Disciple
Joined: 15 Jul 2002
Posts: 158
Location: Cracow, Poland
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A couple of days ago I experienced a strange behaviour of a queue manager on HP-UX:
1. After a few hours of heavy load exercised on MQSI I started having problems with it - MQSI-related commands that I entered from command line just hanged for minutes
2. I decided to stop MQSI, which again took much longer than I expected
3. I found out that the queue manager to which MQSI had been connected did not respond to any command - commands just hanged, as it was with MQSI. Finally, I've managed to restart it using endmqm -p option.
What might have caused this behaviour? I suspect this is rather MQSI-related issue, because my other queue managers were working fine.
Piotr |
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| mqonnet |
| Posted: Fri Jul 11, 2003 5:54 am Post subject: |
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Grand Master
Joined: 18 Feb 2002
Posts: 1114
Location: Boston, Ma, Usa.
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Because MQSI was doing so much stuff that it seemed like your QM was non-responsive to any commands outside of MQSI. I wouldnt suspect this to be a problem at all. Whenever you do a stress testing with MQ, at times all the resources are exhausted and hence MQ cannot do anything more than what it is currently processing.
And since you were able to stop it pre-emptively, i would suspect everything was fine.
The other possibility is that there were lots of FDC's being generated and MQ did not seem to respond well enough in that situation. Check to see if you got any FDC's cut.
Cheers
Kumar |
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| mrlinux |
| Posted: Fri Jul 11, 2003 6:09 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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Well we have had this issue to and have not been able to figure it out
it was on HPUX under heavy-heavy load.
_________________
Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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| pgorak |
| Posted: Mon Jul 14, 2003 3:32 am Post subject: |
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Disciple
Joined: 15 Jul 2002
Posts: 158
Location: Cracow, Poland
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Thank you both for reply. As I put it in the first post, the situation occurred AFTER MQSI was stopped - so there was no load at all at that moment.
Anyway, I'm happy to see that I'm not the only one who ran into this problem  . Next time it happens I'll examine FDCs.
Piotr |
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