The last chapter on Seam in the JPA with Hibernate book was very informative. I stumbled upon the section on triggering a LazyInitializationException when trying to root-cause analyze a colleague's LazyInitializationException problem. So it turns out that you can fix this problem by extending the persistence context as follows in your SFSB: @PersistenceContext(type=EXTENDED) | private EntityManager em; When I search for keyword "ManagedPersistenceContext" in all of the Seam example apps in the CR2 distro, I got no hits. Does that mean it's not necessary to use the Seam managed context and the TransactionalSeamPhaseListener to solve LazyInitializationException's? When do you need to integrate the Seam-managed persistence context as explained in pages 814-815 of the book? I guess I'm not understanding exactly the added value of using the Seam-managed persistence context versus javax.persistence.PersistenceContext. I see more methods in the API for the Seam-managed persistence context class... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4103161#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...