HibernateException: org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions. This eception occurs randomly.Can someone help me out? ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Key: HHH-5819 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5819 Project: Hibernate Core Issue Type: Bug Environment: Java,jsk1.5,oracle 10g Reporter: Sankalp Shah HibernateException: org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions at org.hibernate.collection.AbstractPersistentCollection.setCurrentSession(AbstractPersistentCollection.java:410) at org.hibernate.event.def.OnUpdateVisitor.processCollection(OnUpdateVisitor.java:43) at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:101) at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:61) at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:55) at org.hibernate.event.def.AbstractVisitor.process(AbstractVisitor.java:123) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:293) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:223) at org.hibernate.event.def.DefaultUpdateEventListener.performSaveOrUpdate(DefaultUpdateEventListener.java:33) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70) at org.hibernate.impl.SessionImpl.fireUpdate(SessionImpl.java:564) at org.hibernate.impl.SessionImpl.update(SessionImpl.java:552) at org.hibernate.impl.SessionImpl.update(SessionImpl.java:544) -- 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