I have a small Seam (1.2.1) application running in Tomcat 5.5.23 and using Hibernate and the Embedded EJB3 container. It works so far when I inject the EntityManager like this: @PersistenceContext private EntityManager em; Now I'm trying to use a Seam-managed persistence context instead. Following instructions at http://docs.jboss.com/seam/1.2.1.GA/reference/en/html/persistence.html and many other places, I added this to context.xml: <core:managed-persistence-context name="myDatabase" auto-create="true" persistence-unit-jndi-name="java:/EntityManagerFactories/myData"/> And in persistence.xml, added this to the properties list: property name="jboss.entity.manager.factory.jndi.name" value="java:/EntityManagerFactories/myData"/> In one of my session beans, I added: @In private EntityManager myDatabase; But as soon as a method in that session bean is executed, I get this exception: org.jboss.seam.RequiredException: In attribute requires non-null value: myBean.myDatabase This happens even if I use: @In(create = true) I've also tried to use a Seam-managed Hibernate session, but I can't get that to work either. Apparently I'm missing something. Any idea what it is? Steve Gollery View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4054847#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...