Hi guys, I have a durable topic with 9 mdbs subscribed to. But dead lock encountered on acknowledging of a new message. Although nearly all operations successfully done at the first retry by PersistenceManager, there is a possibility that the operation fails. Is there any place that the maximum number of concurrently threads for one topic can be set? Thanks! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991182#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...