I'm using JBoss AS 4.0.5 and JBPM 3.2. The hibernate version, is the one that comes with JBoss AS. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055115#4055115 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4055115