sandeep kumar [http://community.jboss.org/people/sandeep_jbpm5] created the discussion "How to create a knowledgeSession (Websphare 6.1)" To view the discussion, visit: http://community.jboss.org/message/637917#637917 -------------------------------------------------------------- Hi How to create a knowledgesession in websphare6.1. I am using the following code but it throws exception KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource("xyz-process.bpmn"), ResourceType.BPMN2); KnowledgeBase kbase = kbuilder.newKnowledgeBase(); EntityManagerFactory emf = Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" ); Environment env = KnowledgeBaseFactory.newEnvironment(); env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf ); env.set( EnvironmentName.GLOBALS, new MapGlobalResolver() ); Properties properties = new Properties(); properties.put("drools.processInstanceManagerFactory", "org.jbpm.persistence.processinstance.JPAProcessInstanceManagerFactory"); properties.put("drools.processSignalManagerFactory", "org.jbpm.persistence.processinstance.JPASignalManagerFactory"); TransactionManager tm = new WebSphereTransactionManagerLookup().getTransactionManager(properties); env.set( EnvironmentName.TRANSACTION_MANAGER, tm ); KnowledgeSessionConfiguration config = KnowledgeBaseFactory.newKnowledgeSessionConfiguration(properties); JPAKnowledgeService.newStatefulKnowledgeSession(kbase, config, env) <persistence-unit name="org.jbpm.persistence.jpa" transaction-type="JTA"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jta-data-source>java:comp/env/jdbc/sandeep</jta-data-source>                 <!--<non-jta-data-source>java:comp/env/jdbc/sandeep1</non-jta-data-source> --><mapping-file>META-INF/jpa-orm.xml</mapping-file> <class>org.drools.persistence.info.SessionInfo</class> <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class> <class>org.jbpm.persistence.processinstance.ProcessInstanceEventInfo</class> <class>org.drools.persistence.info.WorkItemInfo</class> <class>org.jbpm.process.audit.ProcessInstanceLog</class> <class>org.jbpm.process.audit.VariableInstanceLog</class> <!--<class>org.jbpm.process.audit.NodeInstanceLog</class>      --> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" /> <property name="hibernate.connection.autocommit" value="false" /> <property name="hibernate.max_fetch_depth" value="3" />                         <property name="hibernate.hbm2ddl.auto" value="create" /> <property name="hibernate.show_sql" value="true" /> <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WebSphereTransactionManagerLookup" />    <!--<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup" /> --><!--<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup"/> --></properties> </persistence-unit> Exception block com.ibm.ws.ffdc.IncidentStreamImpl open FFDC0009I: FFDC opened incident stream file C:\Program Files\IBM\WebSphere\AppServer1\profiles\AppSrv02\logs\ffdc\server1_00000016_11.11.23_05.59.20_0.txt [11/23/11 5:59:20:572 EST] 00000016 ServiceLogger I com.ibm.ws.ffdc.IncidentStreamImpl resetIncidentStream FFDC0010I: FFDC closed incident stream file C:\Program Files\IBM\WebSphere\AppServer1\profiles\AppSrv02\logs\ffdc\server1_00000016_11.11.23_05.59.20_0.txt [11/23/11 5:59:20:572 EST] 00000016 ServletWrappe E   SRVE0100E: Did not realize  init() exception thrown by servlet TaskProcessServlet: java.lang.RuntimeException: error while creating session     at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:52)     at javax.servlet.GenericServlet.init(GenericServlet.java:256)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:191)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.init(ServletWrapper.java:326)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1143)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:159)     at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:99)     at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:790)     at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.java:470)     at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:307)     at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:334)     at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:90)     at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:665)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:618)     at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:395)     at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:611)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1302)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1165)     at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:587)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:832)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:951)     at com.ibm.ws.runtime.component.ApplicationMgrImpl$AppInitializer.run(ApplicationMgrImpl.java:2129)     at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:342)     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469) Caused by: java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:130)     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:54)     at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)     at com.sample.processserver.JbpmAPIUtil.createSession(JbpmAPIUtil.java:279)     at com.sample.processserver.JbpmAPIUtil.getSession(JbpmAPIUtil.java:245)     at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:38)     ... 24 more Caused by: java.lang.reflect.InvocationTargetException     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:67)     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)     at java.lang.reflect.Constructor.newInstance(Constructor.java:522)     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:116)     ... 29 more Caused by: java.lang.ClassCastException: [Ljava.lang.Object; incompatible with [Ljava.util.Map$Entry;     at org.drools.marshalling.impl.OutputMarshaller.writePropagationContexts(OutputMarshaller.java:716)     at org.drools.marshalling.impl.OutputMarshaller.writeFactHandles(OutputMarshaller.java:280)     at org.drools.marshalling.impl.OutputMarshaller.writeSession(OutputMarshaller.java:107)     at org.drools.marshalling.impl.DefaultMarshaller.marshall(DefaultMarshaller.java:136)     at org.drools.persistence.SessionMarshallingHelper.getSnapshot(SessionMarshallingHelper.java:72)     at org.drools.persistence.info.SessionInfo.update(SessionInfo.java:81)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:618)     at org.hibernate.ejb.event.BeanCallback.invoke(BeanCallback.java:23)     at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:80)     at org.hibernate.ejb.event.EntityCallbackHandler.preCreate(EntityCallbackHandler.java:49)     at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:48)     at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)     at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:645)     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:619)     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:623)     at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220)     at org.drools.persistence.jpa.JpaPersistenceContext.persist(JpaPersistenceContext.java:17)     at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:125)     ... 34 more [11/23/11 5:59:20:587 EST] 00000016 ServletWrappe E   Deregister the mbean because of uncaught init() exception thrown by servlet TaskProcessServlet: javax.servlet.ServletException: SRVE0207E: Uncaught initialization exception thrown by servlet     at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:243)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.init(ServletWrapper.java:326)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1143)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:159)     at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:99)     at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:790)     at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.java:470)     at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:307)     at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:334)     at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:90)     at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:665)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:618)     at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:395)     at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:611)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1302)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1165)     at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:587)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:832)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:951)     at com.ibm.ws.runtime.component.ApplicationMgrImpl$AppInitializer.run(ApplicationMgrImpl.java:2129)     at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:342)     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469) ---- Begin backtrace for Nested Throwables java.lang.RuntimeException: error while creating session     at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:52)     at javax.servlet.GenericServlet.init(GenericServlet.java:256)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:191)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.init(ServletWrapper.java:326)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1143)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:159)     at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:99)     at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:790)     at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.java:470)     at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:307)     at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:334)     at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:90)     at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:665)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:618)     at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:395)     at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:611)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1302)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1165)     at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:587)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:832)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:951)     at com.ibm.ws.runtime.component.ApplicationMgrImpl$AppInitializer.run(ApplicationMgrImpl.java:2129)     at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:342)     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469) Caused by: java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:130)     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:54)     at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)     at com.sample.processserver.JbpmAPIUtil.createSession(JbpmAPIUtil.java:279)     at com.sample.processserver.JbpmAPIUtil.getSession(JbpmAPIUtil.java:245)     at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:38)     ... 24 more Caused by: java.lang.reflect.InvocationTargetException     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:67)     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)     at java.lang.reflect.Constructor.newInstance(Constructor.java:522)     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:116)     ... 29 more Caused by: java.lang.ClassCastException: [Ljava.lang.Object; incompatible with [Ljava.util.Map$Entry;     at org.drools.marshalling.impl.OutputMarshaller.writePropagationContexts(OutputMarshaller.java:716)     at org.drools.marshalling.impl.OutputMarshaller.writeFactHandles(OutputMarshaller.java:280)     at org.drools.marshalling.impl.OutputMarshaller.writeSession(OutputMarshaller.java:107)     at org.drools.marshalling.impl.DefaultMarshaller.marshall(DefaultMarshaller.java:136)     at org.drools.persistence.SessionMarshallingHelper.getSnapshot(SessionMarshallingHelper.java:72)     at org.drools.persistence.info.SessionInfo.update(SessionInfo.java:81)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:618)     at org.hibernate.ejb.event.BeanCallback.invoke(BeanCallback.java:23)     at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:80)     at org.hibernate.ejb.event.EntityCallbackHandler.preCreate(EntityCallbackHandler.java:49)     at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:48)     at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)     at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:645)     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:619)     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:623)     at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220)     at org.drools.persistence.jpa.JpaPersistenceContext.persist(JpaPersistenceContext.java:17)     at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:125)     ... 34 more , [11/23/11 5:59:20:587 EST] 00000016 WebExtensionP E   Error occured while preparing the servlet for initialization. javax.servlet.ServletException: SRVE0207E: Uncaught initialization exception thrown by servlet     at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:243)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.init(ServletWrapper.java:326)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1143)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:159)     at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:99)     at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:790)     at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.java:470)     at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:307)     at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:334)     at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:90)     at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:665)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:618)     at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:395)     at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:611)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1302)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1165)     at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:587)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:832)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:951)     at com.ibm.ws.runtime.component.ApplicationMgrImpl$AppInitializer.run(ApplicationMgrImpl.java:2129)     at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:342)     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469) ---- Begin backtrace for Nested Throwables java.lang.RuntimeException: error while creating session     at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:52)     at javax.servlet.GenericServlet.init(GenericServlet.java:256)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:191)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.init(ServletWrapper.java:326)     at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1143)     at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:159)     at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:99)     at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:790)     at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.java:470)     at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:307)     at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:334)     at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:90)     at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:665)     at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:618)     at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:395)     at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:611)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1302)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1165)     at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:587)     at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:832)     at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:951)     at com.ibm.ws.runtime.component.ApplicationMgrImpl$AppInitializer.run(ApplicationMgrImpl.java:2129)     at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:342)     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469) Caused by: java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:130)     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:54)     at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)     at com.sample.processserver.JbpmAPIUtil.createSession(JbpmAPIUtil.java:279)     at com.sample.processserver.JbpmAPIUtil.getSession(JbpmAPIUtil.java:245)     at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:38)     ... 24 more Caused by: java.lang.reflect.InvocationTargetException     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:67)     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)     at java.lang.reflect.Constructor.newInstance(Constructor.java:522)     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:116)     ... 29 more Caused by: java.lang.ClassCastException: [Ljava.lang.Object; incompatible with [Ljava.util.Map$Entry;     at org.drools.marshalling.impl.OutputMarshaller.writePropagationContexts(OutputMarshaller.java:716)     at org.drools.marshalling.impl.OutputMarshaller.writeFactHandles(OutputMarshaller.java:280)     at org.drools.marshalling.impl.OutputMarshaller.writeSession(OutputMarshaller.java:107)     at org.drools.marshalling.impl.DefaultMarshaller.marshall(DefaultMarshaller.java:136)     at org.drools.persistence.SessionMarshallingHelper.getSnapshot(SessionMarshallingHelper.java:72)     at org.drools.persistence.info.SessionInfo.update(SessionInfo.java:81)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:618)     at org.hibernate.ejb.event.BeanCallback.invoke(BeanCallback.java:23)     at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:80)     at org.hibernate.ejb.event.EntityCallbackHandler.preCreate(EntityCallbackHandler.java:49)     at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:48)     at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)     at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:645)     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:619)     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:623)     at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220)     at org.drools.persistence.jpa.JpaPersistenceContext.persist(JpaPersistenceContext.java:17)     at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:125) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/637917#637917] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]