By default, jBPM will delegate transaction to hibernate and use the session per transaction pattern. jBPM will begin a hibernate transaction when a hibernate session is opened. This will happen the first time when a persistent operation is invoked on the jbpmContext. The transaction will be committed right before the hibernate session is closed. That will happen inside the jbpmContext.close().

Use jbpmContext.setRollbackOnly() to mark a transaction for rollback. In that case, the transaction will be rolled back right before the session is closed inside of the jbpmContext.close().

To prohibit jBPM from invoking any of the transaction methods on the hibernate API, set the isTransactionEnabled property to false as explained in the section called “The DbPersistenceServiceFactory” above.