User development, A new message was posted in the thread "JBPM 4 with DB2 v9 on linux throws LockAcquisitionException when multiple job executors are configured": http://community.jboss.org/message/519618#519618 Author : Priyesh Shah Profile : http://community.jboss.org/people/priyesh68 Message: -------------------------------------------------------------- I neglected to include the exception trace...   16:59:24,359 WRN | [JDBCExceptionReporter] SQL Error: -911, SQLState: 40001 16:59:24,359 SEV | [JDBCExceptionReporter] DB2 SQL error: SQLCODE: -911, SQLSTATE: 40001, SQLERRMC: 2 ### EXCEPTION ########################################### 16:59:24,359 SEV | [AbstractFlushingEventListener] Could not synchronize database state with session org.hibernate.exception.LockAcquisitionException     SQLStateConverter.java:105)at org.hibernate.exception.JDBCExceptionHelper.convert(   JDBCExceptionHelper.java:66)at org.hibernate.persister.entity.AbstractEntityPersister.update(   AbstractEntityPersister.java:2453)at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(   AbstractEntityPersister.java:2335)at org.hibernate.persister.entity.AbstractEntityPersister.update(   AbstractEntityPersister.java:2635)at org.hibernate.action.EntityUpdateAction.execute(   EntityUpdateAction.java:115)at org.hibernate.engine.ActionQueue.execute(   ActionQueue.java:279)at org.hibernate.engine.ActionQueue.executeActions(   ActionQueue.java:263)at org.hibernate.engine.ActionQueue.executeActions(   ActionQueue.java:168)at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(   AbstractFlushingEventListener.java:321)at org.hibernate.event.def.DefaultFlushEventListener.onFlush(   DefaultFlushEventListener.java:50)at org.hibernate.impl.SessionImpl.flush(   SessionImpl.java:1027)at org.jbpm.pvm.internal.model.DefaultIdGenerator.createId(   DefaultIdGenerator.java:53)at org.jbpm.pvm.internal.model.ExecutionImpl.initializeProcessInstance(   ExecutionImpl.java:184)at org.jbpm.pvm.internal.model.ProcessDefinitionImpl.createProcessInstance(   ProcessDefinitionImpl.java:107)at org.jbpm.jpdl.internal.activity.SubProcessActivity.execute(   SubProcessActivity.java:69)at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(   ExecuteActivity.java:60)at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(   ExecutionImpl.java:637)at sun.reflect.NativeMethodAccessorImpl.invoke0(   Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(   NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(   DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(   Method.java:597)at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(   JavassistLazyInitializer.java:197)at org.jbpm.pvm.internal.model.ExecutionImpl_$$_javassist_4.performAtomicOperationSync(ExecutionImpl_$$_javassist_4.java) at org.jbpm.pvm.internal.model.op.ExecuteActivityMessage.execute(   ExecuteActivityMessage.java:46)at org.jbpm.pvm.internal.cmd.ExecuteJobCmd.execute(   ExecuteJobCmd.java:76)at org.jbpm.pvm.internal.cmd.ExecuteJobCmd.execute(   ExecuteJobCmd.java:42)at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(   DefaultCommandService.java:42)at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(   StandardTransactionInterceptor.java:54)at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(   EnvironmentInterceptor.java:46)at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(   RetryInterceptor.java:55)at org.jbpm.pvm.internal.jobexecutor.JobParcel.run(   JobParcel.java:48)at java.util.concurrent.Executors$RunnableAdapter.call(   Executors.java:441)at java.util.concurrent.FutureTask$Sync.innerRun(   FutureTask.java:303)at java.util.concurrent.FutureTask.run(   FutureTask.java:138)at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(   ThreadPoolExecutor.java:886)at java.util.concurrent.ThreadPoolExecutor$Worker.run(   ThreadPoolExecutor.java:908)at java.lang.Thread.run(   Thread.java:619)Caused by:   com.ibm.db2.jcc.c.SqlException: DB2 SQL error: SQLCODE: -911, SQLSTATE: 40001, SQLERRMC: 2at com.ibm.db2.jcc.c.kh.c(   kh.java:1660)at com.ibm.db2.jcc.b.db.s(   db.java:875)at com.ibm.db2.jcc.b.db.k(   db.java:387)at com.ibm.db2.jcc.b.db.a(   db.java:60)at com.ibm.db2.jcc.b.t.a(   t.java:52)at com.ibm.db2.jcc.b.tb.b(   tb.java:202)at com.ibm.db2.jcc.c.lh.X(   lh.java:1842)at com.ibm.db2.jcc.c.lh.d(   lh.java:2411)at com.ibm.db2.jcc.c.lh.T(   lh.java:465)at com.ibm.db2.jcc.c.lh.executeUpdate(   lh.java:448)at org.hibernate.persister.entity.AbstractEntityPersister.update(   AbstractEntityPersister.java:2435)... 35 more : could not update: [org.jbpm.pvm.internal.model.ExecutionImpl#5]at org.hibernate.exception.SQLStateConverter.convert(   -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/519618#519618