[jbpm-issues] [JBoss JIRA] Commented: (JBPM-2794) Constraint vailoation when moving from wait state using timer that result in looping back to the same wait state

Constraint vailoation when moving from wait state using timer that result in looping back to the same wait state ---------------------------------------------------------------------------------------------------------------- Key: JBPM-2794 URL: https://jira.jboss.org/jira/browse/JBPM-2794 Project: jBPM Issue Type: Bug Security Level: Public(Everyone can see) Components: Runtime Engine Affects Versions: jBPM 4.4, jBPM 4.3 Environment: Windows XP, Java 1.6, Test case, JBoss 5.1.0 Reporter: Maciej Swiderski Attachments: jbpm-testcase.zip It is impossible to go from one state where transition is made by timer that goes thru java activity and decision point and gets back to the same state for retry. Problem only exists if timer is assigned to a wait state and all nodes are executed synchnously. Error that is thrown is: 10:57:13,382 WRN | [JDBCExceptionReporter] SQL Error: -104, SQLState: 23000 10:57:13,382 SEV | [JDBCExceptionReporter] Violation of unique constraint $$: duplicate value(s) for column(s) $$: SYS_CT_50 in statement [update JBPM4_EXECUTION set DBVERSION_=?, ACTIVITYNAME_=?, PROCDEFID_=?, HASVARS_=?, NAME_=?, KEY_=?, ID_=?, STATE_=?, SUSPHISTSTATE_=?, PRIORITY_=?, HISACTINST_=?, PARENT_=?, INSTANCE_=?, SUPEREXEC_=?, SUBPROCINST_=? where DBID_=? and DBVERSION_=?] ### EXCEPTION ########################################### 10:57:13,382 SEV | [AbstractFlushingEventListener] Could not synchronize database state with session org.hibernate.exception.ConstraintViolationException: could not update: [org.jbpm.pvm.internal.model.ExecutionImpl#15] Attached is a eclipse project with minimal test case for it that illustrates the problem. The same test project is attached to discussion on forum. Workaround is to make one on the nodes between states to be async.