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| Listener can not be started |
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| kun.leeing |
 Posted: Tue Feb 17, 2009 6:24 pm Post subject: Listener can not be started |
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Disciple
Joined: 27 Sep 2008
Posts: 171
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After too many clients connecting a port of mq server, the connection number of one port exceed the limit number. So the new clients can not connect server. And system is stopped.But after I stop all of the clients, the serverconn still hold old connections with previous apps and dont release them. why?
Then, I restart the mqm but the listener of that port can never be started even though I recreated it.
Finally , I restart the OS and then start mqm ,but the listener of the port still can not be started.
How do I solve this problem?
thanks. |
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| fjb_saper |
| Posted: Tue Feb 17, 2009 8:23 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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- You allocate a different channel with SSL and mcauser to each application. This provides separation.
- When an application drives the channel use to maxactivechannels you need to realize that the default tcp/ip timeout is around 2 hours.
- You can force shutdown the channel to the incriminating application. Then restart it. This should clear up the max channels issue. Remember before doing this that you should make sure the network issue at the root cause has been taken care of first.
Have fun 
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MQ & Broker admin |
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| kun.leeing |
| Posted: Thu Feb 19, 2009 7:36 pm Post subject: |
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Disciple
Joined: 27 Sep 2008
Posts: 171
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Thanks for the reply. 
It really solves my problem to some extent.
But by testing the program, I find a reason of making connections limit exceeded is we do not create an efficient reconnecting module.
After network being broken and then recovered,
I just call the method 'createConnection()' to check if connection with MQ Server is available and then create it.
Later I find a high rising of connection number of the port related to the retrying client and the unnecessary connections also can hardly be released though the reconnection have been finished.
My problems is
How can I release the resources of previous connections and clear up the environment after recovery of the network stopped by force as clients running?
How can I make a good reconnecting module that just retry gracefully and do not build too many connections ?
Is there an effective procedure of reconnecting model given?
Could you give me some clues?
thanks,everybody. |
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