I have a stateful session bean that uses other stateless session beans via their remote interfaces. The stateless session beans use EJB3 persistence. Now I have this scenario: Application bean (stateful): Resource resource = securityManager_.createResource(admin); | return folderManager_.createRootFolder(resource); Security Manager bean (stateless): @PersistenceContext private EntityManager em_; | | public Resource createResource(User owner) throws SecurityException { | Resource resource = new Resource(owner); | em_.persist(resource); | return resource; | } Folder Manager bean (stateless): @PersistenceContext private EntityManager em_; | | public Folder createRootFolder(Resource resource) throws FolderException { | | // this instruction causes the exception | em_.refresh(resource); | | // code omitted | } The em_.refresh(resource); causes a HibernateException to be throws: anonymous wrote : Stack Trace: | * org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:567) | * org.hibernate.ejb.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:239) | * org.jboss.ejb3.entity.TransactionScopedEntityManager.refresh(TransactionScopedEntityManager.java:193) | * net.sf.adigres.foldermanager.FolderManagerBean.createRootFolder(FolderManagerBean.java:88) | * .... | Caused by: org.hibernate.HibernateException: this instance does not yet exist as a row in the database | * org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:90) | * org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:39) | * org.hibernate.impl.SessionImpl.fireRefresh(SessionImpl.java:895) | * org.hibernate.impl.SessionImpl.refresh(SessionImpl.java:879) | * org.hibernate.ejb.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:233) | * ... 106 more This happens only in conjunction with the stateful Application bean. Stand alone tests of the two stateless beans involved work without problems. I guess it has something to do with transactions but I don't use @TransactionAttribute annotations anywhere so the default value (REQUIRED) should apply (and be appropriate). Can anyone help me with this, please? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4004544#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...