SequenceBlockIdGenerator produces duplicate keys ------------------------------------------------ Key: JBPM-85 URL: http://jira.jboss.com/jira/browse/JBPM-85 Project: JBoss jBPM Issue Type: Bug Components: Core Engine Affects Versions: jBPM 2.0 Environment: jbpm 2.0, jboss 4.01, jdk1.5 Reporter: Armin Haaf Assigned To: Tom Baeyens Priority: Optional SequenceBlockIdGenerator produces duplicate keys, if the transaction in which the hilo block is read from the database is rollbacked. This could occur in a j2ee environment in a jta transaction. I´m not sure if a hibernate session using jta transactions creates a new jta transaction, if a transaction is already registered, but it seems it uses the current transaction. So the beginTransaction, commit code in SequenceBlockIdGenerator did not commit immediatly and could be rollbacked later.