i used SMPC(for example): <core:managed-persistence-context name="myManagername" | auto-create="true" | persistence-unit-jndi-name="java:/myjndiname"> | </core:managed-persistence-context> but the context is not extended, because in the code i get the ref to the Entitymanger i described further, but the Dataselection Model will not work in my stateful session beans, so it's not extended. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4090403#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...