MQSeries.net :: View topic - MQ Series 6.0 with BEA Weblogic 8.1 SP4 problem

gswamin · Posted: Tue Mar 27, 2007 3:00 am Post subject:

Hi all,
I am trying to leverage the BOTHRESH feature on the MQ level with MDB deployed in Weblogic 8.1 sp5. On the MQ Queue side, i have set "Backout requeue queue" as an "<Some error Queue>" , "Backout threshold" as "2" and "Harden get backout" as "Not Hardened".
I have got the following setting on my MDB side for its ejb-jar.xml

---------------------------- ejb-jar.xml --------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN' 'http://java.sun.com/dtd/ejb-jar_2_0.dtd'>



<ejb-jar>
<description><![CDATA[This is the deployment descriptor for the auto-dialer Message driven bean]]></description>
<display-name>MQ Series Message Pull Message Driven Bean</display-name>
<enterprise-beans>
<message-driven>
<description><![CDATA[This bean pulls message from a queue and passes it on to a handler.]]></description>
<ejb-name>MQSeriesMessagePullMDB</ejb-name>
<ejb-class>com.capitalone.ccs.mqseries.ejb.MQSeriesMessagePullMDB</ejb-class>
<transaction-type>Container</transaction-type>
<acknowledge-mode>Auto-acknowledge</acknowledge-mode>
<message-driven-destination>
<destination-type>javax.jms.Queue</destination-type>
</message-driven-destination>

<env-entry>
<description><![CDATA[The user name to be used to invoke a Chordiant Service]]></description>
<env-entry-name>username</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>service</env-entry-value>
</env-entry>
<env-entry>
<description><![CDATA[The password to be used to invoke a Chordiant Service]]></description>
<env-entry-name>password</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>service</env-entry-value>
</env-entry>
<env-entry>
<description><![CDATA[The no of retry attempts.]]></description>
<env-entry-name>retry_count</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>2</env-entry-value>
</env-entry>
<resource-ref>
<res-ref-name>MQSeriesXAQCF</res-ref-name>
<res-type>javax.jms.QueueConnectionFactory</res-type>
<res-auth>Application</res-auth>
<res-sharing-scope>Unshareable</res-sharing-scope>
</resource-ref>
<resource-ref>
<res-ref-name>MQSeriesAutoDialerQueue</res-ref-name>
<res-type>javax.jms.Queue</res-type>
<res-auth>Application</res-auth>
<res-sharing-scope>Unshareable</res-sharing-scope>
</resource-ref>
</message-driven>
</enterprise-beans>

<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>MQSeriesMessagePullMDB</ejb-name>
<method-name>onMessage</method-name>
<method-params>
<method-param>javax.jms.Message</method-param>
</method-params>

</method>
<method>
<ejb-name>MQSeriesMessagePullMDB</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
</assembly-descriptor>

</ejb-jar>

--------------------------- end of ejb-jar.xml ---------------------------------

The weblogic-ejb-jar.xml file is

--------------------------- Start of weblogic-ejb-jar.xml-----------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC '-//BEA Systems, Inc.//DTD WebLogic 8.1.0 EJB//EN' 'http://www.bea.com/servers/wls810/dtd/weblogic-ejb-jar.dtd'>



<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>MQSeriesMessagePullMDB</ejb-name>
<message-driven-descriptor>
<pool>
<max-beans-in-free-pool>10</max-beans-in-free-pool>
<initial-beans-in-free-pool>3</initial-beans-in-free-pool>
</pool>

<destination-jndi-name>AUTODIALER_LOCAL</destination-jndi-name>
<initial-context-factory>com.sun.jndi.fscontext.RefFSContextFactory</initial-context-factory>
<provider-url>file:C:/JNDI-Directory</provider-url>
<connection-factory-jndi-name>XA_DLOCAL</connection-factory-jndi-name>
</message-driven-descriptor>

<transaction-descriptor>
<trans-timeout-seconds>300</trans-timeout-seconds>
</transaction-descriptor>

<reference-descriptor>
<resource-description>
<res-ref-name>MQSeriesXAQCF</res-ref-name>
<jndi-name>jms/MQSeriesXAQCF</jndi-name>
</resource-description>
<resource-description>
<res-ref-name>MQSeriesAutoDialerQueue</res-ref-name>
<jndi-name>jms/MQSeriesAutoDialerQueue</jndi-name>
</resource-description>
</reference-descriptor>

<enable-call-by-reference>True</enable-call-by-reference>
<jndi-name>ejb/MQSeriesMessagePullMDB</jndi-name>
<local-jndi-name>MQSeriesMessagePullMDBLocal</local-jndi-name>
<remote-client-timeout>0</remote-client-timeout>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>

------------------------------End of weblogic-ejb-jar.xml ----------------------

The problem is when my MDB throws an IllegalStateException on any failure. I see on my weblogic logs that the same message is delivered to the MDB twice and is backed out after two times (since backout count is set to 2 at MQ side). But after backing out, i see the queue depth of the Error destination incremented by 1, but the actual message itself is not visible. When i try to clear the message in the Error Queue, i get an error saying that there are uncommitted messages hence cannot be cleared up.

Does anyone know why this is happenning and what i need to get those messages be commited and viewable. Is there any setting that is required on the MQ Queue Manager or on Weblogic side. Please help me, i have spent a lot of time getting this work and is totally lost as to how to get it. Appreciate any suggestions or inputs on this.

Thanks
Swami