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| AMQ9508 - runmqsc problem |
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| Stephen M |
 Posted: Tue Dec 04, 2001 4:57 am Post subject: |
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Newbie
Joined: 03 Dec 2001
Posts: 4
Location: Nottingham, England
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I am trying to deploy MQ Series v5.1 on
HPUX11. I have everything working ok
except that every so often runmqsc fails
with the folowing error :
AMQ9508 - Program cannot connect to queue
manager.
This tends to happen on and off fop about 1/2 an hour and then runmqsc stops working completely until MQSeries is stopped and started.
It would appear to be a resource problem but I have made all the reconmended kernel parameter changes as recommended in IBM's MQSeries "Quick Beginnings".
Is anyone aware of anything else that may cause this.
Cheers
Stephen |
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| bower5932 |
| Posted: Tue Dec 04, 2001 2:58 pm Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| Are there any additional errors in the amqerr01.log files? |
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| Stephen M |
| Posted: Wed Dec 05, 2001 2:24 am Post subject: |
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Newbie
Joined: 03 Dec 2001
Posts: 4
Location: Nottingham, England
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The only messages in the error logs that relete to the time of the problems were found in the /var/adm/qmgrs/@SYSTEM/errors/AMQERR01.LOG.
The messages were as follows:
AMQ9508 - Program cannot connect to queue manager.
Explanation - The connection attempt to queue manager 'ccfmq1' failed with reason code 2102
AMQ9999 - Channel program ended abnormally
Explanation - Channel program 'SMARTAGG.CLIENT.01' ended abnormally.
Don't know if this helps !
Any advice would be gratefully received.
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| StefanSievert |
| Posted: Wed Dec 05, 2001 1:32 pm Post subject: |
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Partisan
Joined: 28 Oct 2001
Posts: 333
Location: San Francisco
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Well,
I thought looking up the 2102 reason code in the Messages manual might be a good idea. Here's what it says:
2102 X'836' MQRC_RESOURCE_PROBLEM
| Insufficient system resources available.
| There are insufficient system resources to complete the call successfully.
| On OS/390, this reason code does not occur.
| Corrective action: Run the application when the machine is less heavily loaded.
| On Digital OpenVMS, OS/2 Warp, OS/400, Tandem NSK, and UNIX platforms, consult the
| FFST record to obtain more detail about the problem.
So, can you check (and post) any .FDC files that have been generated? I don't know much about HP-UX but on other Unix systems shared memory and semaphore limits are often a cause for these kinds of problems. The Quick Beginnings Manual for HP-UX should give you the information needed to set up your machine for MQ use.
Hope that helps,
Stefan
_________________
Stefan Sievert
IBM Certified * MQSeries
[ This Message was edited by: StefanSievert on 2001-12-05 13:33 ] |
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| Stephen M |
| Posted: Thu Dec 06, 2001 3:54 am Post subject: |
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Newbie
Joined: 03 Dec 2001
Posts: 4
Location: Nottingham, England
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After further investigation I have determined the cause of the problem - though
I don't know how to fix it. HPUX has a product known as glance which allows me to view details about current processes.
Whilst viewing this I noticed that the thread count for the amqzlaa0 (the local queue manager agent) was steadily increasing. It appears that everytime a runmqsc query is sent a new thread is introduced but when the query ends the thread is not being released. This means that the thread count continues to go up until it reaches the max_proc_thread value (1024) after that runmqsc stops running as it cannot open any more threads.
I have passed the info to IBM and will post a fix if they come up with one. |
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