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Message
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| peterw686 |
 Posted: Fri Mar 05, 2004 11:24 am Post subject: SVRCONN channel increased while calling JAVA client |
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Acolyte
Joined: 26 Sep 2002
Posts: 73
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Hi All,
I don't know if this is a problem or nature of MQ.
I write a java client program to send a message to the queue. I realize that every time I call the program to send one message, on the queue manager it creates a new SVRCONN channel and the status is "running".
In my code, I already put finally{} to close the connection.
| Code: |
finally{
logger.info("send() end <<<<<<<<<<<<<<<<<<<<");
try{
// close the queue
if( queue != null ){
System.out.println("Close Queue");
queue.close();
queue = null;
}
// disconnect from the queue manager
if( mqManager != null ){
mqManager.close();
System.out.println("Close QM");
mqManager = null;
}
}catch(MQException mqe){}
} |
My questions are:
1. Is something wrong with this code? If not, why the channel instance will not disappear after close the connection?
2. Is there a limit for how many channel instances one queue manager have?
Thanks in advanced.
Peter |
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| EddieA |
| Posted: Fri Mar 05, 2004 11:34 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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1.
| Quote: |
| mqManager.close(); |
Shouldn't that be:
| Code: |
| mqManager.disconnect(); |
2. MaxActiveChannels
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| peterw686 |
| Posted: Fri Mar 05, 2004 11:41 am Post subject: |
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Acolyte
Joined: 26 Sep 2002
Posts: 73
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Thanks Eddie.
Two more stupid questions:
1. what's the difference between qmanager.close() and qmanager.disconnect();
2. how to check the MaxActiveChannels? Is there is MQSC command? |
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| EddieA |
| Posted: Fri Mar 05, 2004 11:52 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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1. I'm not really a Java programmer (it's what I drink when I used to write assembler  ), but I'm going to guess it's intended for other classes derived from MQManagedObject, like MQQueue, but not MQQueueManager. But, any Java programmers out there can feel free to shoot me down in flames. (Pulls on Nomex underwear.  )
2. http://www.mqseries.net/phpBB2/viewtopic.php?t=13691&highlight=maxactivechannels
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| peterw686 |
| Posted: Fri Mar 05, 2004 12:25 pm Post subject: |
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Acolyte
Joined: 26 Sep 2002
Posts: 73
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Hi Eddie,
1. You are right, the disconnect() works
2. I checked the MQ setup on the unix box and could not find that setting in ini. Do you know what's the default value? |
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| PeterPotkay |
| Posted: Fri Mar 05, 2004 3:24 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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The Java manual does not list .close as a valid method for the MQQueueManager object.
_________________
Peter Potkay
Keep Calm and MQ On |
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