Thanks guys, I have successfully been able to confgure jbpm 5, Tomcat 6.0 and Postgresql in the same enviroment and almost everything works fine. The human processes are stored in my postgres database and I see all clear. All tables are persisting to my postgre database through hibernate and persistence. But my processInstanceLog and NoteInstanceLog is not persisting and I have done according to the documention but I am not making any progress. Can anyone help with a guideline or telll me what I may be doing wrong. I am using bitronix for Transaction manager.