User development, A new message was posted in the thread "jbpm 4.3 - org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update": http://community.jboss.org/message/521577#521577 Author : Ronald van Kuijk Profile : http://community.jboss.org/people/kukeltje Message: -------------------------------------------------------------- Is this on a clustered system or just one node? There have been multiple reports lately on constraint violations which from what I see now could be related to the ID Generator, just not sure. Can you check what happens if you e.g. use a DBMS native id generator and not the one that comes with jBPM (since 4.2 afaik). Altough I'm not sure if that can be replaced in just the hibernate config file. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/521577#521577