Consider this, from the description of the Registration example in the tutorial: anonymous wrote : Note that, since this is a sesson bean, a transaction is automatically begun when the register() method is called, and committed when it completes. I don't know for sure whether the Seam interceptor is creating the transaction or the EJB spec requires it. I suspect it's the latter. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3982703#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...