Hi Gavin, I am facing the below issue in my application.Could you provide your suggesstion on this? --------------------------------------------------------------------------------------------------- Key: EJB-445 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-445 Project: Hibernate Entity Manager Issue Type: Bug Environment: hibernate 2.0 and oracle database Reporter: Yohida RMICallHandler-5 15:55:46,933 WARN [StaleObjectStateException] An operation failed due to stale data net.sf.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect) for com.domain.user.bo.ModeListImpl instance with identifier: com.domain.user.bo.ModeListImpl@175718c[objectId=<null>] at net.sf.hibernate.persister.AbstractEntityPersister.check(AbstractEntityPersister.java:513) at net.sf.hibernate.persister.NormalizedEntityPersister.update(NormalizedEntityPersister.java:664) at net.sf.hibernate.persister.NormalizedEntityPersister.update(NormalizedEntityPersister.java:639) at net.sf.hibernate.impl.ScheduledUpdate.execute(ScheduledUpdate.java:52) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2449) at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2435) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2393) at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2261) at com.retek.rpm.domain.core.persistence.PersistenceManagerImpl.flush(PersistenceManagerImpl.java:201) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira