[jboss-dev-forums] [jBPM Development] - Cannot create resource instance/Could not commit session

gigazhang [https://community.jboss.org/people/gigazhang] created the discussion "Cannot create resource instance/Could not commit session" To view the discussion, visit: https://community.jboss.org/message/738246#738246 -------------------------------------------------------------- 2012-05-28 18:55:12,796 DEBUG [org.drools.persistence.jta.JtaTransactionManager] - <No UserTransaction found at JNDI loc ation [java:comp/UserTransaction]> javax.naming.NamingException: Cannot create resource instance         at org.apache.naming.factory.TransactionFactory.getObjectInstance(TransactionFactory.java:113)         at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)         at org.apache.naming.NamingContext.lookup(NamingContext.java:793)         at org.apache.naming.NamingContext.lookup(NamingContext.java:140)         at org.apache.naming.NamingContext.lookup(NamingContext.java:781)         at org.apache.naming.NamingContext.lookup(NamingContext.java:153)         at org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)         at javax.naming.InitialContext.lookup(InitialContext.java:392)         at org.drools.persistence.jta.JtaTransactionManager.findUserTransaction(JtaTransactionManager.java:119)         at org.drools.persistence.jta.JtaTransactionManager.<init>(JtaTransactionManager.java:69)         at org.drools.persistence.SingleSessionCommandService.initTransactionManager(SingleSessionCommandService.java:28 9)         at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:115)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.ja va:67)         at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)         at com.baison.demo.jbpm.commons.JbpmHelper.createSession(JbpmHelper.java:306)         at com.baison.demo.jbpm.commons.JbpmHelper$$FastClassByCGLIB$$70c70670.invoke(<generated>)         at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)         at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:68 9)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)         at com.baison.demo.jbpm.commons.JbpmHelper$$EnhancerByCGLIB$$b1fed0c2.createSession(<generated>)         at com.baison.demo.jbpm.service.TaskProcessServiceImpl.startProcess(TaskProcessServiceImpl.java:86)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)         at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java: 183)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)         at $Proxy45.startProcess(Unknown Source)         at com.baison.demo.jbpm.controller.TaskProcessController.getUserCommitProcess(TaskProcessController.java:88)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)         at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:12 6)         at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletIn vocableHandlerMethod.java:96)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(Reques tMappingHandlerAdapter.java:617)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMapp ingHandlerAdapter.java:578)         at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.j ava:80)         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)         at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)         at java.lang.Thread.run(Thread.java:662) 2012-05-28 18:55:12,822 DEBUG [org.drools.persistence.jta.JtaTransactionManager] - <No JTA TransactionSynchronizationReg istry found at default JNDI location [java:comp/TransactionSynchronizationRegistry]> javax.naming.NameNotFoundException: Name TransactionSynchronizationRegistry is not bound in this Context         at org.apache.naming.NamingContext.lookup(NamingContext.java:770)         at org.apache.naming.NamingContext.lookup(NamingContext.java:140)         at org.apache.naming.NamingContext.lookup(NamingContext.java:781)         at org.apache.naming.NamingContext.lookup(NamingContext.java:153)         at org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)         at javax.naming.InitialContext.lookup(InitialContext.java:392)         at org.drools.persistence.jta.JtaTransactionManager.findTransactionSynchronizationRegistry(JtaTransactionManager .java:141)         at org.drools.persistence.jta.JtaTransactionManager.<init>(JtaTransactionManager.java:77)         at org.drools.persistence.SingleSessionCommandService.initTransactionManager(SingleSessionCommandService.java:28 9)         at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:115)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.ja va:67)         at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)         at com.baison.demo.jbpm.commons.JbpmHelper.createSession(JbpmHelper.java:306)         at com.baison.demo.jbpm.commons.JbpmHelper$$FastClassByCGLIB$$70c70670.invoke(<generated>)         at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)         at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:68 9)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)         at com.baison.demo.jbpm.commons.JbpmHelper$$EnhancerByCGLIB$$b1fed0c2.createSession(<generated>)         at com.baison.demo.jbpm.service.TaskProcessServiceImpl.startProcess(TaskProcessServiceImpl.java:86)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)         at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java: 183)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)         at $Proxy45.startProcess(Unknown Source)         at com.baison.demo.jbpm.controller.TaskProcessController.getUserCommitProcess(TaskProcessController.java:88)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)         at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:12 6)         at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletIn vocableHandlerMethod.java:96)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(Reques tMappingHandlerAdapter.java:617)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMapp ingHandlerAdapter.java:578)         at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.j ava:80)         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)         at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)         at java.lang.Thread.run(Thread.java:662) 2012-05-28 18:55:12,983 DEBUG [org.hibernate.impl.SessionImpl] - <opened session at timestamp: 13382025129> 2012-05-28 18:55:12,984 DEBUG [org.hibernate.ejb.AbstractEntityManagerImpl] - <Looking for a JTA transaction to join> 2012-05-28 18:55:12,987 DEBUG [bitronix.tm.BitronixTransaction] - <registering synchronization org.hibernate.transaction .CacheSynchronization> 2012-05-28 18:55:12,988 DEBUG [org.hibernate.jdbc.JDBCContext] - <successfully registered Synchronization> 2012-05-28 18:55:12,989 DEBUG [bitronix.tm.BitronixTransaction] - <registering synchronization org.hibernate.ejb.Abstrac tEntityManagerImpl$1@3c5fd5> 2012-05-28 18:55:12,990 ERROR [org.drools.persistence.SingleSessionCommandService] - <Could not commit session> java.lang.NullPointerException         at org.drools.persistence.jta.JtaTransactionManager.getStatus(JtaTransactionManager.java:205)         at org.drools.persistence.jta.JtaTransactionManager.begin(JtaTransactionManager.java:163)         at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:147)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.ja va:67)         at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)         at com.baison.demo.jbpm.commons.JbpmHelper.createSession(JbpmHelper.java:306)         at com.baison.demo.jbpm.commons.JbpmHelper$$FastClassByCGLIB$$70c70670.invoke(<generated>)         at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)         at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:68 9)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)         at com.baison.demo.jbpm.commons.JbpmHelper$$EnhancerByCGLIB$$b1fed0c2.createSession(<generated>)         at com.baison.demo.jbpm.service.TaskProcessServiceImpl.startProcess(TaskProcessServiceImpl.java:86)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)         at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java: 183)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)         at $Proxy45.startProcess(Unknown Source)         at com.baison.demo.jbpm.controller.TaskProcessController.getUserCommitProcess(TaskProcessController.java:88)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)         at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:12 6)         at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletIn vocableHandlerMethod.java:96)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(Reques tMappingHandlerAdapter.java:617)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMapp ingHandlerAdapter.java:578)         at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.j ava:80)         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)         at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)         at java.lang.Thread.run(Thread.java:662) 2012-05-28 18:55:13,003 WARN [org.drools.persistence.jta.JtaTransactionManager] - <Unable to rollback transaction> java.lang.NullPointerException         at org.drools.persistence.jta.JtaTransactionManager.rollback(JtaTransactionManager.java:193)         at org.drools.persistence.SingleSessionCommandService.rollbackTransaction(SingleSessionCommandService.java:369)         at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:156)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.ja va:67)         at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)         at com.baison.demo.jbpm.commons.JbpmHelper.createSession(JbpmHelper.java:306)         at com.baison.demo.jbpm.commons.JbpmHelper$$FastClassByCGLIB$$70c70670.invoke(<generated>)         at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)         at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:68 9)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)         at com.baison.demo.jbpm.commons.JbpmHelper$$EnhancerByCGLIB$$b1fed0c2.createSession(<generated>)         at com.baison.demo.jbpm.service.TaskProcessServiceImpl.startProcess(TaskProcessServiceImpl.java:86)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)         at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java: 183)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)         at $Proxy45.startProcess(Unknown Source)         at com.baison.demo.jbpm.controller.TaskProcessController.getUserCommitProcess(TaskProcessController.java:88)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)         at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:12 6)         at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletIn vocableHandlerMethod.java:96)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(Reques tMappingHandlerAdapter.java:617)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMapp ingHandlerAdapter.java:578)         at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.j ava:80)         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)         at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)         at java.lang.Thread.run(Thread.java:662) 2012-05-28 18:55:13,018 ERROR [org.drools.persistence.SingleSessionCommandService] - <Could not rollback> java.lang.RuntimeException: Unable to rollback transaction         at org.drools.persistence.jta.JtaTransactionManager.rollback(JtaTransactionManager.java:197)         at org.drools.persistence.SingleSessionCommandService.rollbackTransaction(SingleSessionCommandService.java:369)         at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:156)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.ja va:67)         at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)         at com.baison.demo.jbpm.commons.JbpmHelper.createSession(JbpmHelper.java:306)         at com.baison.demo.jbpm.commons.JbpmHelper$$FastClassByCGLIB$$70c70670.invoke(<generated>)         at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)         at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:68 9)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)         at com.baison.demo.jbpm.commons.JbpmHelper$$EnhancerByCGLIB$$b1fed0c2.createSession(<generated>)         at com.baison.demo.jbpm.service.TaskProcessServiceImpl.startProcess(TaskProcessServiceImpl.java:86)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)         at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java: 183)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)         at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)         at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)         at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)         at $Proxy45.startProcess(Unknown Source)         at com.baison.demo.jbpm.controller.TaskProcessController.getUserCommitProcess(TaskProcessController.java:88)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)         at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:12 6)         at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletIn vocableHandlerMethod.java:96)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(Reques tMappingHandlerAdapter.java:617)         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMapp ingHandlerAdapter.java:578)         at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.j ava:80)         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)         at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)         at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException         at org.drools.persistence.jta.JtaTransactionManager.rollback(JtaTransactionManager.java:193)         ... 63 more 2012-05-28 18:55:15,926 INFO [org.apache.mina.filter.logging.LoggingFilter] - <IDLE> -------------------------------------------------------------- Reply to this 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