"wolfc" wrote : Passivation/activation isn't a problem, because by definition we only passivate if the entities are serializable (EJB 3 4.2) and we treat the entity as a serializable object. Thus the entity becomes detached after activation (JPA 3.2.4). All working according to spec. This definitely not allowed by the spec. An entity should remain managed across passivation/activation. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4078965#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...