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Re: JBPM5 running processess/tasks behaviour when App Server shutdown/restart
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created by <a href="http://community.jboss.org/people/anandintouch">Anand Prakash</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/609010#609010">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi Brkhard,</p><p>Thanks for your response. I'm not using jbpm console ,I've integrated jbpm with my application and from there I start processes/task.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Yes I was talking about long running task meaning process/task which is started but not finished and if we restart server</p><p>then will it pick trigger again with same old session in sessioninfo table with that id=1 ?  Mostly it works but sometime it doesn't complete the tasks after server restart may be because of old session is not used which had triggered those process/tasks.</p><p>So new session gets created and that works fine to start new process/task.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I'm using Oracle DB and on server(Tomcat) restart I test if JBPM sequence and tables is available then don't create new otherwise create new sequence/tables.</p><p>Basically I need help related to session handling, I've notice some weird exception.Sometime after server restart I see "<strong style="font-size: 11pt; font-family: 'Calibri','sans-serif';">java.lang.NullPointerException</strong>" because ksession is null and hence while calling below line in CommandDelegate, application throw this exception.</p><p>ksession.startProcess(processId, parameters).getId();  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>While server start,app looks for sessioninfo table for default id "1" otherwise commanddelgate class creates new session but </p><p>sometime I see below exception(error laoding session snapshot) and it never create or use old session to trigger old or new process/tasks.</p><p><span style="color: #c00000;">Loading process AutoCyclicalRiskAssesment.bpmn</span></p><p><span style="color: #c00000;">Loading session data ...</span></p><p><span style="color: #c00000;">Error loading session data: java.lang.reflect.InvocationTargetException</span></p><p><span style="color: #c00000;">Error loading session data: java.lang.RuntimeException: Unable to load session snapshot</span></p><p><span style="color: #c00000;">12:35:26,907 ERROR [CommandDelegate] java.lang.IllegalStateException: java.lang.reflect.InvocationTar</span></p><p><span style="color: #c00000;">getException</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="color: #c00000;">So any help to handle session properly would be greatly appreciated .I need to know how to properly handle while server runs or if any server restart/shutdown/maintenance.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="color: #c00000;">Thanks,</span></p><p><span style="color: #c00000;">Anand<br/></span></p></div>
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