Your problem is Hibernate related. When you load a persistent object it's related objects are lazily loaded. That is these objects aren't actually loaded, but will be loaded only when you try to access them. The problem take place when you access to lazily loaded object proxy when it's owner session is terminated. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4058158#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...