Using jBPM with Spring and Hibernate, I am sometimes getting:
java.sql.BatchUpdateException: ORA-02291: integrity constraint (JBPMUSER.FK_LOG_TASKINST) violated - parent key not found
When signalling/ending a task. Only sometimes though, and seemingly randomly.
I'm using Hibernate 3.1 still.
I havent traced through yet, but if others have experienced similar issues please share your war stories.