Send message to WebSphere MQ resource adapter - how?

Hi,
has anybody a working sample how an Weblogic EJB can write to an MQ queue via the WebSphere MQ resource adapter?
http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/index.jsp?topic=/com.ibm.mq.csqzaw.doc/uj40010_.htm
I took Adrian Cole's sample from
WebSphere MQ resource adapter and Weblogic - how?
the message driven bean works, but for outbound I couldn't get it to work.
I used
     @Resource(name = "wmq/ConnectionFactory")
     private javax.jms.ConnectionFactory queueConnectionFactory;
     Connection connection = null;
     connection = queueConnectionFactory.createConnection();
     Session sess = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
     MessageProducer messageProducer = sess.createProducer(queue);
     messageProducer.send(msg);
     connection.close();
But then I get
javax.jms.JMSException: [JMSPool:169819]There was an error with a resource pool used to pool JMS sessions: weblogic.common.ResourceException: 0:javax.jms.JMSException: MQJCA1018:Only one session per connection allowed.
Can't I use the Resource Adapter to trigger an MDB and write in the same application to the same Resource Adapter?
Thanks,
Juergen

By using @Resource you activate Session pooling [http://download.oracle.com/docs/cd/E12840_01/wls/docs103/jms/j2ee.htm]. Although you constantly create and close the connection, you end up with one connection and multiple Sessions created out of it when there is sufficient concurrency. In JCA, ManagedConnection represents a single Resource (because it also deals with JDBC). In JMS, a Session is a resource. Session pooling violates the requirement "one resource per managed connection" which is what MQ Resource Adapter is telling [http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/index.jsp?topic=/com.ibm.mq.csqzaw.doc/uj40030_.htm].
Some possible solutions:
* Set max-beans-in-free-pool 1 in weblogic-ejb-jar.xml
* disable wls Session pooling by simply looking up using InitialContext.lookup. WLS session pool is redundant because resource adapters usually pool connections [http://download.oracle.com/docs/cd/E12840_01/wls/docs103/resadapter/connect.html]. Define outbound resource adapter use its connection factory.

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WebSphere MQ resource adapter and Weblogic - how?

Hi,
has anybody managed to get the WebSphere MQ resource adapter to run with Weblogic 10.3 ?
(http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/topic/com.ibm.mq.csqzaw.doc/uj40010_.htm)
I got it deployed, but it never triggers. I only made changes to the ra.xml, do I also need a weblogic-ra.xml?
Has anybody a sample for the WebSphere MQ resource adapter?
Thanks very much,
Juergen

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* ejb-jar.xml - http://pastie.org/294594
* weblogic-ejb-jar.xml - http://pastie.org/294597
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* note: If you want consistent control of the amount of consumers you have on a queue, set the ejb-jar.xml activation-config maxPoolDepth == weblogic-ejb-jar.xml max-beans-in-free-pool
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I hope this helps. It is the result of may months of effort between Bea and IBM, and with me in the middle! ;)
Cheers,
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Edited by: ferncam1 on Oct 17, 2008 5:31 AM

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Send message to WebSphere MQ resource adapter - how?

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