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| Closing session/connection blocks? |
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| steffi2 |
 Posted: Wed Sep 30, 2009 10:06 am Post subject: Closing session/connection blocks? |
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Apprentice
Joined: 04 Sep 2009
Posts: 31
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So I'm testing my application's ability to reestabilish it's connection to the queue manager. I notice that when I get my server guy to kick me off the queue I get a
E_JMS_CONNECTION_PROBLEM clientId: null : MQJMS2002: failed to get message from MQ queue; nested exception is
com.ibm.mq.MQException: MQJE001: Completion Code 2, Reason 2202javax.jms.JMSException: MQJMS2002: failed to get message from MQ queue at com.ibm.mq.jms.services.ConfigEnvironment.newException(ConfigEnvironment.java:540)
at com.ibm.mq.jms.MQQueueReceiver.getMessage(MQQueueReceiver.java:1730) at com.ibm.mq.jms.MQQueueReceiver.receiveAsync(MQQueueReceiver.java:828) at com.ibm.mq.jms.contact admin.run(contact admin.java:401)
at java.lang.Thread.run(Thread.java:637)
and my ExceptionListener does
JMSUtilities.close(receiver, log);
//JMSUtilities.close(session, log);
//JMSUtilities.close(connection, true, log);
if I try to close the session or the connection I JMS will block and the async delivery thread doesn't go any further. So I can currently
reestabilish connectivity by not doing that but where is the documentation that says that I shouldn't close either session or connection? |
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| fjb_saper |
| Posted: Wed Sep 30, 2009 7:25 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Have you checked the meaning of Reason Code 2202?
In any case you should stop the connection before setting a message listener to null. (way to remove it.)
You should also close the receiver, session, and connection.
This will prevent a connection leak.
Read up on standard JMS and JMS good practice. IIRC sun has a good JMSTutorial...
Have fun 
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