I mean that ,After create the TaskInstance TaskInstance ti = pi.getTaskMgmtInstance().createStartTaskInstance(); Whether i save ti or close jbpmcontext ,the same exception always throwed. | 09:27:24,765 [http8001-Processor25] ERROR DbPersistenceService : hibernate commit failed | org.hibernate.SessionException: Session is closed | at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:116) | at org.hibernate.transaction.JDBCTransaction.commitAndResetAutoCommit(JDBCTransaction.java:139) | at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:115) | at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253) | at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211) | at org.jbpm.svc.Services.close(Services.java:222) | at org.jbpm.JbpmContext.close(JbpmContext.java:139) | at buesiness.BusinessEngine.SaveGo(BusinessEngine.java:113) | at buesiness.BusinessEngine.exectue(BusinessEngine.java:62) | at org.apache.jsp.order_005fexec_jsp._jspService(order_005fexec_jsp.java:99) | at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) | at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311) | at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301) | at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256) | at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) | at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563) | at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199) | at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) | at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:195) | at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164) | at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149) | at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156) | at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) | at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563) | at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972) | at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:209) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:670) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:517) | at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:575) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666) | at java.lang.Thread.run(Thread.java:595) | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4069858#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...