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MQSeries.net Forum Index » IBM MQ Java / JMS » XAResource.start blocking

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tfennelly
PostPosted: Thu Oct 21, 2010 3:18 am    Post subject: XAResource.start blocking Reply with quote

Newbie

Joined: 20 May 2009
Posts: 9
Hi there.

I have an application using the WMQ JCA Adapter. It is:

1. Receiving messages from queue "A" through the JCA inflow.
2. Connecting and sending to another message to queue "B".

All works fine when using the regular (non XA) connection factory, but when using the XA connection factory, enlisting the XAResource from the XA Session in the active transaction results in a thread block (see stack below) in the XAResource.start.

I'm testing on WMQ 7 (with the 7.0.1.3 patch). I think () I've also disabled connection sharing for the channel. I say "think" because I'm not totally sure which config setting does this - I changed the Default Bind Type (on the "Extended" config on the queue manager properties) from shared to isolated. Have a feeling this is not the correct setting

Just wondering if anyone has seen this before and if there was a solution for it. I'm sure it's something stupid I'm doing.

Code:

Name: WorkManager(2)-3
State: WAITING on com.ibm.mq.jmqi.remote.internal.RemoteHconn$AsyncTshLock@19fa786
Total blocked: 0  Total waited: 42

Stack trace:
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:474)
com.ibm.mq.jmqi.remote.internal.RemoteHconn.receiveAsyncTsh(RemoteHconn.java:1803)
com.ibm.mq.jmqi.remote.internal.RemoteHconn.receiveTSH(RemoteHconn.java:1093)
com.ibm.mq.jmqi.remote.internal.RemoteHconn.receiveMQIFlow(RemoteHconn.java:1603)
com.ibm.mq.jmqi.remote.internal.RemoteFAP.xa_start(RemoteFAP.java:9202)
com.ibm.mq.jmqi.JmqiXAResource.start(JmqiXAResource.java:788)
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.enlistResource(TransactionImple.java:899)
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.enlistResource(TransactionImple.java:510)
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tfennelly
PostPosted: Thu Oct 21, 2010 4:33 am    Post subject: Reply with quote

Newbie

Joined: 20 May 2009
Posts: 9
OK... sorry... I think I found the trick with the channels and setting the sharing... I created a Server Connection Channel in the Advanced settings on the Queue Manager, set the "Sharing Conversations" setting (in Extended config) to 1. I then set the new channel as the channel on my XA connection factory.

Same result however... JmqiXAResource.start thread blocks.
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fjb_saper
PostPosted: Thu Oct 21, 2010 10:49 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
Can you show the code? (use code tags)
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