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MQSeries.net Forum Index » Multiphase Commit » 2072/SYNCPOINT error during XA transaction on JBoss

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edward2013
PostPosted: Wed Jan 23, 2013 5:23 pm    Post subject: 2072/SYNCPOINT error during XA transaction on JBoss Reply with quote

Newbie

Joined: 23 Jan 2013
Posts: 1

Hi,

I've configured a JBoss server to import several WMQ queues using the WMQ JCA resource adapter. To do this, I configured a <tx-connection-factory> to go against the appropriate queueManager in BINDINGS mode. I also imported the required queues as AdminObjects. I then have a series of services in the JBoss ESB that consume messages off of one queue and place them on another queue for the next service to consume.

For the most part, things work as expected. However, I'm seeing the following exception intermitently:

Quote:
Caused by: com.ibm.mq.MQException: JMSCMQ0001: WebSphere MQ call failed with compcode '2' ('MQCC_FAILED') reason '2072' ('MQRC_SYNCPOINT_NOT_AVAILABLE').


It only happens a few times over the course of processing a couple hundred records and, most of the time, message delivery succeeds upon retry. It doesn't seem to be happening on any one particular queue, or at any particular point during processing.

I enabled trace logging for MQ and see the following around the time the SYNCPOINT error occurs:

Quote:
19:51:57.612.00 0002 @7d3aca15 c.i.m.c.wmq.internal.WMQMessageProducer ! checkJmqiCallSuccess(String,WMQDestination,String,Pint,Pint), JMSWMQ2007: Failed to send a message to destination 'MY_QUEUE''. [com.ibm.msg.client.jms.DetailedJMSException]


I found some IBM documentation that suggests this error might result from pooling JMS sessions, which get reused by different threads. However, I've also seen the same error with a test application that was creating a new session every time it delivered a message, so I'm not sure that's what's causing the issue.

I also see that some default settings where changed in 7.0.1.6 (I'm using an older version) that appears to affect SYNCPOINTs, but I'm not sure I understand what the changes are supposed to accomplish (I would post a link, but the forum won't let me. The document is titled "Change in behavior of MQPUT1").

I also have seen pointers elsewhere on this forum that suggest I should verify that the MQCF is XA enabled. Is there somewhere in WebSphere MQ Explorer where I can check this? If not, where would I check?

Any other suggestions?
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