You got a real, genuine, deadlock there. 2 threads fighting over the same resources. When you set the timeout to an hour instead of 5 minutes it means only that the threads where fighting for the whole hour instead of 5 minutes. There is no easy answer for this I'm afraid. The application must be re-designed to prevent two threads wanting the same resource (database rows) at the same time. H View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4212068#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...