I am using JBPM 5.3 and have configured JBPM 5.4, JBPM console, Human task and JBPM guvnor to run on tomcat 7.
I was getting permgen space error so I have installed Guvnor in one tomcat and everything else in another tomcat instance.
When I create JBPM process in Guvnor and having human task it is visible in JBPM console and I can start the task.
But If I start another process having only script task is is resulting in below error when I click the process in JBPM console. Is there any specific reason?
The error I am getting is as below. Let me know If any otehr details needs to be rpovded
org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
org.jboss.resteasy.core.SynchronousDispatcher.unwrapException(SynchronousDispatcher.java:345)
org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:321)
org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:214)
org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:190)
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:534)
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:496)
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:119)
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
root cause
java.lang.NullPointerException
java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:89)
org.jbpm.persistence.processinstance.ProcessInstanceInfo.getProcessInstance(ProcessInstanceInfo.java:132)
org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:83)
org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:204)
org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1100)
org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:297)
org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:48)
org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:25)
org.drools.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)
org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:367)
org.drools.command.impl.CommandBasedStatefulKnowledgeSession.getProcessInstance(CommandBasedStatefulKnowledgeSession.java:125)
org.jbpm.integration.console.CommandDelegate.getActiveNodeInstances(CommandDelegate.java:211)
org.jbpm.integration.console.ProcessManagement.getProcessInstances(ProcessManagement.java:75)
org.jboss.bpm.console.server.ProcessMgmtFacade.getInstancesJSON(ProcessMgmtFacade.java:192)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)