JBO error when terminate session

Question

Hi,
I ran into the following error when I tried terminate session when user logs out. You help would be appreciated.
Here is the code of the backing bean
ExternalContext ectx = FacesContext.getCurrentInstance().getExternalContext();
HttpSession session = (HttpSession)ectx.getSession(false);
session.invalidate();
return "success";
Here is the error I received.
500 Internal Server Error
javax.faces.FacesException: #{plLogout.logoutButton_action}: javax.faces.el.EvaluationException: oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)     at oracle.adf.view.faces.component.UIXCommand.broadcast(UIXCommand.java:211)     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:367)     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:336)     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:196)     at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:87)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:332)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:627)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:376)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:870)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:218)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:119)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)     at java.lang.Thread.run(Thread.java:595)Caused by: javax.faces.el.EvaluationException: oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:130)     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)     ... 24 moreCaused by: oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null     at oracle.jbo.JboException.<init>(JboException.java:346)     at oracle.adf.model.binding.DCBindingContainerReference.createBindingContainer(DCBindingContainerReference.java:76)     at oracle.adf.model.binding.DCBindingContainerReference.getBindingContainer(DCBindingContainerReference.java:43)     at oracle.adf.model.BindingContext.get(BindingContext.java:491)     at oracle.adf.model.binding.DCBindingContainer.release(DCBindingContainer.java:1910)     at oracle.adf.model.binding.DCDataControl.release(DCDataControl.java:1551)     at oracle.adf.model.bc4j.DCJboDataControl.release(DCJboDataControl.java:471)     at oracle.adf.model.binding.DCDataControl.release(DCDataControl.java:1482)     at oracle.adf.model.BindingContext.release(BindingContext.java:284)     at oracle.adf.model.servlet.HttpBindingContext.valueUnbound(HttpBindingContext.java:36)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.EvermindHttpSession.destroy(EvermindHttpSession.java:458)     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.EvermindHttpSession.invalidate(EvermindHttpSession.java:400)     at PLS.view.backing.security.PLLogout.logoutButton_action(PLLogout.java:26)     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:585)     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)     ... 25 more
Regards,

Answer 1

bonnietang,
Use the [ code ] and [ /code ] tags (without the spaces) to format your stack trace. That way, it is easier to follow (at least for me).
I assume that this line of your code, is causing the error:
session.invalidate();Correct?
I see you are using OC4J 10.1.3. Then perhaps the OC4J or the Oracle Application Server - General may be more appropriate for your message. However, since you are also using ADF, then perhaps the JDeveloper and ADF is also appropriate.
Good Luck,
Avi.