shekhar g [https://community.jboss.org/people/shekhargod] created the discussion "jBPM: Could not start transaction when clicked on "Group Tasks" menu" To view the discussion, visit: https://community.jboss.org/message/754296#754296 -------------------------------------------------------------- Hi, I get following exception in the log when clicked on "Group Tasks" sub-menu under "Tasks" menu on jbpm-console. Any help in resolving this issue will be appreciated. INFO [stdout] (Thread-21) Hibernate: select user0_.id as id8_0_ from OrganizationalEntity user0_ where user0_.id=? and user0_.DTYPE='User' 12:14:31,193 ERROR [stderr] (http--127.0.0.1-8080-3) java.lang.RuntimeException: Command QueryTasksOwnedWithParticularStatus *faild due to Could not start transaction*.. Please contact task server administrator. 12:14:31,193 ERROR [stderr] (http--127.0.0.1-8080-3) at org.jbpm.task.service.TaskServerHandler.messageReceived( 12:14:31,193 ERROR [stderr] (http--127.0.0.1-8080-3) at org.jbpm.task.service.hornetq.BaseHornetQTaskServer.run( BaseHornetQTaskServer.java:85) 12:14:31,193 ERROR [stderr] (http--127.0.0.1-8080-3) at java.lang.Thread.run(Unknown Source) 12:14:31,203 ERROR [stderr] (Thread-21) java.lang.RuntimeException: Could not start transaction. 12:14:31,203 ERROR [stderr] (Thread-21) at org.jbpm.task.service.persistence.TaskPersistenceManager.queryWithParametersInTransaction( TaskPersistenceManager.java:278) 12:14:31,203 ERROR [stderr] (Thread-21) at org.jbpm.task.service.persistence.TaskPersistenceManager.queryWithParametersInTransaction( TaskPersistenceManager.java:285) 12:14:31,204 ERROR [stderr] (Thread-21) at org.jbpm.task.service.TaskServiceSession.getTasksAssignedAsPotentialOwnerByStatusByGroup( TaskServiceSession.java:1040) 12:14:31,204 ERROR [stderr] (Thread-21) at org.jbpm.task.service.TaskServerHandler.messageReceived( TaskServerHandler.java:356) 12:14:31,204 ERROR [stderr] (Thread-21) at org.jbpm.task.service.hornetq.HornetQTaskServerHandler.messageReceived( HornetQTaskServerHandler.java:44) 12:14:31,204 ERROR [stderr] (Thread-21) at org.jbpm.task.service.hornetq.BaseHornetQTaskServer.run( BaseHornetQTaskServer.java:85) 12:14:31,204 ERROR [stderr] (Thread-21) at java.lang.Thread.run(Unknown Source) 12:14:31,204 ERROR [stderr] (Thread-21) Caused by: java.lang.NullPointerException 12:14:31,204 ERROR [stderr] (Thread-21) at org.drools.persistence.jta.JtaTransactionManager.getStatus( JtaTransactionManager.java:205) 12:14:31,204 ERROR [stderr] (Thread-21) at org.jbpm.task.service.persistence.TaskJTATransactionManager.getStatus( TaskJTATransactionManager.java:63) 12:14:31,204 ERROR [stderr] (Thread-21) at org.jbpm.task.service.persistence.TaskJTATransactionManager.begin( TaskJTATransactionManager.java:36) 12:14:31,205 ERROR [stderr] (Thread-21) at org.jbpm.task.service.persistence.TaskPersistenceManager.beginTransaction( TaskPersistenceManager.java:87) 12:14:31,205 ERROR [stderr] (Thread-21) at org.jbpm.task.service.persistence.TaskPersistenceManager.queryWithParametersInTransaction( TaskPersistenceManager.java:260) 12:14:31,205 ERROR [stderr] (Thread-21) ... 6 more 12:14:31,207 ERROR [stderr] (Thread-35) Exception in thread "Thread-35" java.lang.RuntimeException: Client Exception with class class org.jbpm.task.service.hornetq.HornetQTaskClientConnector$1 using port 5445 12:14:31,207 ERROR [stderr] (Thread-35) at org.jbpm.task.service.hornetq.HornetQTaskClientConnector$1.run( HornetQTaskClientConnector.java:134) 12:14:31,207 ERROR [stderr] (Thread-35) at java.lang.Thread.run(Unknown Source) 12:14:31,207 ERROR [stderr] (Thread-35) Caused by: java.lang.NullPointerException 12:14:31,207 ERROR [stderr] (Thread-35) at org.jbpm.task.service.TaskClientHandler.messageReceived( TaskClientHandler.java:62) 12:14:31,207 ERROR [stderr] (Thread-35) at org.jbpm.task.service.hornetq.HornetQTaskClientHandler.messageReceived( HornetQTaskClientHandler.java:56) 12:14:31,208 ERROR [stderr] (Thread-35) at org.jbpm.task.service.hornetq.HornetQTaskClientConnector$1.run( HornetQTaskClientConnector.java:120) 12:14:31,208 ERROR [stderr] (Thread-35) ... 1 more 12:14:31,850 INFO [stdout] (http--127.0.0.1-8080-7) INFO 17-08 12:14:31,849 ( DemoAuthenticator.java:authenticate:65) Demo login for user (admin) succeeded. TaskServerHandler.java:665) 12:14:31,193 ERROR [stderr] (http--127.0.0.1-8080-3) at org.jbpm.task.service.hornetq.HornetQTaskServerHandler.messageReceived( HornetQTaskServerHandler.java:44) -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/754296#754296] Start a new discussion in jBPM Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]