[jboss-user] [jBPM] - Re: Restart JBPM5 Process after system crash

Swaminathan Bhaskar [https://community.jboss.org/people/swaminathan.bhaskar] created the discussion "Re: Restart JBPM5 Process after system crash" To view the discussion, visit: https://community.jboss.org/message/741104#741104 -------------------------------------------------------------- Is this the correct way to identify and restart a crashed process instance ?                     ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, kbase, null, env);                     if (ksession != null) {                          Collection instances = ksession.getProcessInstances();                          if (instances != null && instances.size() > 0) {                               for (ProcessInstance processInstance : instances) {                                    System.out.printf("\n*** Restarting old Business process [%s]\n", processInstance.getProcessId());                                                                        // Start the BPM process                                    ksession.startProcessInstance(processInstance.getId());                                                                        // Trigger the signal                                    ksession.signalEvent("Trigger", null);                                                                        // Did the process instance complete successfully ?                                    if (processInstance.getState() == ProcessInstance.STATE_COMPLETED) {                                         System.out.printf("\nBusiness process [%s] successfully completed after restart\n", processInstance.getProcessId());                                    }                               }                          }                     }                     else {                          System.out.println("***** WARNING: No session found for session-id " + sessionId);                     } This is not working and I get the following exception: Hibernate: select sessioninf0_.id as id1_0_, sessioninf0_.lastModificationDate as lastModi2_1_0_, sessioninf0_.rulesByteArray as rulesByt3_1_0_, sessioninf0_.startDate as startDate1_0_, sessioninf0_.OPTLOCK as OPTLOCK1_0_ from SessionInfo s essioninf0_ where sessioninf0_.id=? 0    11/06 20:43:55,210[main] ERROR drools.persistence.SingleSessionCommandService.rollbackTransaction  - Could not commit session java.lang.NullPointerException         at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstances(JPAProcessInstanceManager.java:97)         at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstances(ProcessRuntimeImpl.java:200)         at org.drools.common.AbstractWorkingMemory.getProcessInstances(AbstractWorkingMemory.java:1093)         at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstances(StatefulKnowledgeSessionImpl.java:292)         at org.drools.command.runtime.process.GetProcessInstancesCommand.execute(GetProcessInstancesCommand.java:35)         at org.drools.command.runtime.process.GetProcessInstancesCommand.execute(GetProcessInstancesCommand.java:28)         at org.drools.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)         at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:345)         at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.getProcessInstances(CommandBasedStatefulKnowledgeSession.java:139) Any ideas ? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/741104#741104] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]