Hi, We are evaluating JBoss Messaging suitability for reliable delivery. I am not quite sure how reliable message delivery (PERSISTENT) is implemented in JBoss Messaging. Assuming a JDBC persistence manager, does the AUTO_ACK mode result in a JDBC commit after each message ? On my tests, persistent auto-ack send was too fast ( about 3000 1K messages/s) which means that there is no auto commit. if so, it would mean that persistent message delivery is not really reliable which is a violation of the JMS spec. Thanks. VJ View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4128216#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...