Hi All, Environment: Weblogic 4.5.1, apache 2.0.39 I am getting following error these days frequently (@10/15 days). Transaction: '1055937880012_11997' rolled back due to EJB exception: <.....Exception>: An unexpected error occurs when trying to perform your request (RemoteException). weblogic.ejb.extensions.LockTimedOutException: Bean could not be locked, current owner: '1055937880012_11908', new owner: '1055937880012_11997', timeout: '300000' ms Somehow the bean gets locked . The properties of Session Bean in Question: Re-Entrant : False State Binding : Stateless Thanks a lot in advance. Regards, Nilesh.