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| Shalini |
 Posted: Wed Apr 14, 2004 11:19 pm Post subject: AMQ9513: Maximum number of channels reached |
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Master
Joined: 30 Apr 2002
Posts: 224
Location: India
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Hi,
Currently we are getting AMQ9513: Maximum number of channels reached
in mq error logs.
For MQ 5.2 in Solaris 2.6. Can we have the following configration
MaxChannels=200
MaxActiveChannels=200
Currently we donot have any of the entries for the following configuration.
Is there any limits for Solaris2.6 with 5.2 for the above said numbers
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| bower5932 |
| Posted: Thu Apr 15, 2004 5:04 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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My guess would be that you have programs that aren't disconnecting and are hanging onto the channels.
There have also been numerous fixes in this area in the WMQ 5.3 product. I'd suggest getting off of 5.2 (which isn't supported). |
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| PeterPotkay |
| Posted: Thu Apr 15, 2004 12:41 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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But 5.3 won't run on 2.6 
_________________
Peter Potkay
Keep Calm and MQ On |
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| sanvij |
| Posted: Thu Apr 15, 2004 2:34 pm Post subject: |
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Novice
Joined: 21 Mar 2003
Posts: 24
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You can also set the TCP stanza in the qm.ini as
TCP:
KeepAlive=Yes
The below quote from Intercommunication doc:
| Quote: |
If you specify this option, TCP periodically checks that the other end of the connection is still available, and if it is not, the channel is
terminated.
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_________________
Sanvij
IBM Certified MQSeries Specialist
IBM Certified WebSphere MQ Solution Designer |
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| mqonnet |
| Posted: Thu Apr 15, 2004 5:07 pm Post subject: |
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Grand Master
Joined: 18 Feb 2002
Posts: 1114
Location: Boston, Ma, Usa.
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Search this site with MAXCHANNELS keyword and you find a bunch of hits. All or most of your answers would be in there. This thread also might be of interest to you.
"http://www.mqseries.net/phpBB2/viewtopic.php?t=2465&highlight=maxchannels
As far as i know and understand there is no limit for maxchannels attribute barring the physical capacity of the system itself.
You shouldnt need as many in real practice of course, as bower pointed out you probably have to check the reasons your apps aren't disconnecting which is why they are consuming all of the channels.
Cheers
Kumar |
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| Yanghui |
| Posted: Tue May 18, 2004 2:23 am Post subject: |
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Disciple
Joined: 08 May 2002
Posts: 151
Location: Dublin, Ireland
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Hi, there,
Does anybody know whether the problem (AMQ9513) can cause queue manager crush? My queue manager crushed once lately. The only error I can find is this. I am wondering why. It shouldn't since my understanding is that if the problem happens, queue manager should keep running and just reject new connection request.
Thanks in advace.
Regards
-Yanghui |
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| bower5932 |
| Posted: Tue May 18, 2004 4:54 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| Did your crash generate an *.FDC file? Reaching the max channels shouldn't crash your qmgr. |
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| Yanghui |
| Posted: Tue May 18, 2004 8:35 am Post subject: |
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Disciple
Joined: 08 May 2002
Posts: 151
Location: Dublin, Ireland
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Hi, there,
Thanks for your reply.
No .FDC file. I have checked. It's a bit strange why my queue manager crushed. No clue at all but the error AMQ9513.
Regards
-Yanghui |
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