1) A Seam persistence context is most like a container-managed extended persistence context. But whereas the container-managed context is tied to an SFSB instance, and hence there can be multiple contexts per conversation, the Seam persistence context has exactly one per conversation. 2) No, you can still use Hibernate Validator, just use an atomic persistence context, and be careful about where you put s:validate(All) 3) persist() does not accept detached entities (it throws an exception). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3993708#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...