Thanks for the help again. I've given up on the JEMS version of JBoss. I was getting very strange serialization issues. As soon as I installed messaging to the "all" server from the 4.2.2GA download and configured the data sources everything started working. Note that I couldn't use the jbossall-client.jar as outlined in the doc, since it conflicted with my version of Hibernate. Would it be possible to list each specific client jar in the doc? I have my client working, but it was a guess and check on the jar files, and I want to be sure I have everything I need. I'm was also having a bit of a performance issue. When I was using MQ, I could queue up my messages very quickly. My messages are object messages, and they're quite large, between 16k up to 40k (so far). With JBoss MQ I could queue around 500 messages a minute with our current POJO client. With JBoss messaging and the default queues, it takes about 10 minutes to queue 500 messages, then hangs at around 570 messages. I though this may be due to my queue configuration and paging given the large message size. I lowered the memory storage and paging quite a bit, which appears to have fixed my issue. Is this a valid fix, or is there a better way to handle large messages? Settings Data Source: DefaultDS Database Type: MySQL (InnoDB Tables) Connection Info: java.naming.provider.url=jnp://localhost:1100 Connection Factory JNDI Location: ClusteredXAConnectionFactory destinations-service.xml | | <!-- Input Queue for statements --> | <mbean code="org.jboss.jms.server.destination.QueueService" | name="jboss.messaging.destination:service=Queue,name=StatementInput" | xmbean-dd="xmdesc/Queue-xmbean.xml"> | <depends optional-attribute-name="ServerPeer"> | jboss.messaging:service=ServerPeer | </depends> | <depends>jboss.messaging:service=PostOffice</depends> | <attribute name="DLQ"> | jboss.messaging.destination:service=Queue,name=StatementDLQ | </attribute> | <attribute name="Clustered">true</attribute> | <attribute name="MaxDeliveryAttempts">2</attribute> | <attribute name="FullSize">100</attribute> | <attribute name="PageSize">50</attribute> | <attribute name="DownCacheSize">50</attribute> | | </mbean> | | <mbean code="org.jboss.jms.server.destination.QueueService" | name="jboss.messaging.destination:service=Queue,name=StatementOutput" | xmbean-dd="xmdesc/Queue-xmbean.xml"> | <depends optional-attribute-name="ServerPeer"> | jboss.messaging:service=ServerPeer | </depends> | <depends>jboss.messaging:service=PostOffice</depends> | <attribute name="DLQ"> | jboss.messaging.destination:service=Queue,name=StatementDLQ | </attribute> | <attribute name="Clustered">true</attribute> | <attribute name="FullSize">100</attribute> | <attribute name="PageSize">50</attribute> | <attribute name="DownCacheSize">50</attribute> | </mbean> | | | <!-- DLQ for statements --> | <mbean code="org.jboss.jms.server.destination.QueueService" | name="jboss.messaging.destination:service=Queue,name=StatementDLQ" | xmbean-dd="xmdesc/Queue-xmbean.xml"> | <depends optional-attribute-name="ServerPeer"> | jboss.messaging:service=ServerPeer | </depends> | <depends>jboss.messaging:service=PostOffice</depends> | <attribute name="Clustered">true</attribute> | <attribute name="FullSize">100</attribute> | <attribute name="PageSize">50</attribute> | <attribute name="DownCacheSize">50</attribute> | </mbean> | Thanks, Todd View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4144708#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...