A few more changes to the persistence.xml file - there is no 'name' element, and you need to make the value for name match the name specifed in @PersistenceContext(unitName="user"). So here is the updated persistence.xml file that should work: <persistence xmlns="http://java.sun.com/xml/ns/persistence" | xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" | version="1.0"> | <persistence-unit name="user" > | <jta-data-source>java:/DefaultDS</jta-data-source> | <properties> | <property name="hibernate.hbm2ddl.auto" value="create-drop"/> | </properties> | </persistence-unit> | </persistence> And one more thing. You don't need PortableRemoteObject.narrow. This will work: UserRegistrationRemote dao = (UserRegistrationRemote)jndiContext.lookup("UserRegistrationSessionBean/remote"); View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217665#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...