Shouldn't be. Violation of the EJB3 Spec, section 4.3.13: anonymous wrote : Clients are not allowed to make concurrent calls to a stateful session object. If a client-invoked business | method is in progress on an instance when another client-invoked call, from the same or different client, | arrives at the same instance of a stateful session bean class, if the second client is a client of the bean?s | business interface, the concurrent invocation may result in the second client receiving the | javax.ejb.ConcurrentAccessException S, ALR View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989464#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...