I found out why testFailureRightAfterSend was not failing. I was expecting the message to be delivered only on the failedOver consumer, but it is also being delivered to a pre-existent consumer on the new node. So.. I have changed the testcase and I can verify a duplication. It's not throwing a PrimaryKey exception as the server is creating an extra reference. (one for the failedOver queue, and one for the original queue on the new server). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4011571#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...