"gaohoward" wrote : IMO, unacknowledged messages may be sent twice. In this case after the client reconnects, first thing it should do is a transaction recovery. If that is correct, what would you recommend when two clients read from the same queue? When the first dies, the second will get the message right away and the first will recover later. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4185421#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...