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| uditara |
 Posted: Fri Nov 29, 2013 8:36 am Post subject: MQ Server Connection Channel - Maximum Connection Reach |
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Apprentice
Joined: 18 Nov 2013
Posts: 36
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Hi All,
WebSphere MQ 7.0.1.10
Since last two/three weeks we are facing MQ Server connection channel maximum reached..
I would like to know that any pro-active monitoring alerts mechanisam can be set to avoid maximum connection reached...
Can anyone please share your inputs on how to set/configure Tivoli ITCAM Alerts for WMQ - Server connection channel maximum reached or any specific connection threshold reach....
Thanks,
Udi Tara |
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| smdavies99 |
| Posted: Fri Nov 29, 2013 8:53 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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Adding the alert to ITCAM aside, are you going to increase the number of permitted connections?
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WMQ User since 1999
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Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| gbaddeley |
| Posted: Sun Dec 01, 2013 2:29 pm Post subject: Re: MQ Server Connection Channel - Maximum Connection Reach |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| uditara wrote: |
| I would like to know that any pro-active monitoring alerts mechanisam can be set to avoid maximum connection reached... |
Hi Udi. Monitoring will inform you when the max channels is reached, but it won't address the root cause. You either have the limit set too low, or the client app is badly coded and does not disconnect from MQ when it terminates.
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Glenn |
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| uditara |
| Posted: Mon Dec 02, 2013 3:00 am Post subject: |
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Apprentice
Joined: 18 Nov 2013
Posts: 36
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Thanks for your inputs.
The present requirement is to configure monitoring alert in Tivoli ITCAM to avoid maximum connection reach at specipfic Server Connection Channel...
Can anyone share the configuration details about what Tivoli situation need to be configure set some threshold value for eg. 200 - maximum connection channel to generate the alert.....
Development team is also looking code perspective in respective of closing the connections...
udiTara |
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| bruce2359 |
| Posted: Mon Dec 02, 2013 6:34 am Post subject: Re: MQ Server Connection Channel - Maximum Connection Reach |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| uditara wrote: |
I would like to know that any pro-active monitoring alerts mechanism can be set to avoid maximum connection reached... |
If your SVRCONN channel reaches max-connections, AND you are quickly alerted, what will you do then? What action will you take in real-time to resolve this?
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ב''ה
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| wmbwmq |
| Posted: Mon Dec 02, 2013 1:46 pm Post subject: |
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Acolyte
Joined: 18 Jul 2011
Posts: 66
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Use MAXINSTC to limit the connections for the offending application. That of course is most suitable if you have separate SVRCONN channel per application. Whenever a new application goes live its best to set this parameter and once the app stabilizes it may be removed. And the value to be set for this parameter is left to your knowledge of the application (load/threads , non-prod loadtest results etc).
And regd the alert, set it to trigger an alert when it reaches say 75% of the max so that you can take some corrective actions. But again I have seen one scenario where some rogue application taking up all 2000 available connections in less than 3 minutes (that was in V6 so MAXINSTC was not there) |
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