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ADF Binding Context becomes NULL during heavy application load

Anand Ramachandran-269376Dec 20 2017 — edited Dec 21 2017

I have a customer running into the below NullPointerException exception when their application load is heavy.

This issue happens only in their production environments and only during heavy load. It is not related to any specific

operation and happens randomly across the application.

The NPE originates from line number 62 from the below code, which maps to the following line from the below exception

stack trace : at com.myApplication.setup.AifDCJboDataContol.beginRequest(AifDCJboDataContol.java:62)

20 public class AifDCJboDataContol extends JUApplication {

....

59 public void beginRequest(HashMap requestCtx) {

60 super.beginRequest(requestCtx);

61 if (requestCtx != null) {

62 HttpServletRequest request = (HttpServletRequest)requestCtx.get(BindingContext.HTTP_REQUEST);

The above code executes multiple times when the application is running. However during a heavy load it fails

and the Binding Context suddenly becomes null. Any help here would be greatly appreciated.

javax.el.ELException: java.lang.NullPointerException

at com.sun.el.parser.AstValue.invoke(AstValue.java:191)

at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)

at oracle.adf.controller.internal.util.ELInterfaceImpl.invokeMethod(ELInterfaceImpl.java:173)

at oracle.adfinternal.controller.activity.MethodCallActivityLogic.execute(MethodCallActivityLogic.java:162)

at oracle.adfinternal.controller.engine.ControlFlowEngine.executeActivity(ControlFlowEngine.java:1075)

at oracle.adfinternal.controller.engine.ControlFlowEngine.doRouting(ControlFlowEngine.java:960)

at oracle.adfinternal.controller.engine.ControlFlowEngine.doRouting(ControlFlowEngine.java:859)

at oracle.adfinternal.controller.engine.ControlFlowEngine.invokeTaskFlow(ControlFlowEngine.java:245)

at oracle.adfinternal.controller.state.ChildViewPortContextImpl.invokeTaskFlow(ChildViewPortContextImpl.java:105)

at oracle.adfinternal.controller.state.ControllerState.createChildViewPort(ControllerState.java:1552)

at oracle.adfinternal.controller.ControllerContextImpl.createChildViewPort(ControllerContextImpl.java:91)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.createRegionViewPortContext(TaskFlowRegionModelViewPort.java:780)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.getViewPort(TaskFlowRegionModelViewPort.java:625)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.doProcessBeginRegion(TaskFlowRegionModelViewPort.java:253)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelLocal.processBeginRegion(TaskFlowRegionModelLocal.java:12)

at oracle.adf.view.rich.component.fragment.UIXRegion$RegionContextChange.doChangeImpl(UIXRegion.java:1298)

at oracle.adf.view.rich.context.DoableContextChange.doChange(DoableContextChange.java:91)

at oracle.adf.view.rich.component.fragment.UIXRegion._beginInterruptibleRegion(UIXRegion.java:766)

at oracle.adf.view.rich.component.fragment.UIXRegion.processRegion(UIXRegion.java:566)

at oracle.adfinternal.view.faces.taglib.region.AbstractRegionTag.doStartTag(AbstractRegionTag.java:80)

at oracle.adfinternal.view.faces.taglib.region.RegionTag.doStartTag(RegionTag.java:89)

at jsp_servlet._setup.__main_jspx._jspx___tag8(__main_jspx.java:477)

at jsp_servlet._setup.__main_jspx._jspx___tag7(__main_jspx.java:444)

at jsp_servlet._setup.__main_jspx._jspx___tag6(__main_jspx.java:399)

at jsp_servlet._setup.__main_jspx._jspx___tag5(__main_jspx.java:345)

at jsp_servlet._setup.__main_jspx._jspx___tag1(__main_jspx.java:178)

at jsp_servlet._setup.__main_jspx._jspx___tag0(__main_jspx.java:116)

at jsp_servlet._setup.__main_jspx._jspService(__main_jspx.java:77)

at weblogic.servlet.jsp.JspBase.service(JspBase.java:35)

at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)

at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)

at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)

at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:185)

at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)

at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)

at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:410)

at org.apache.myfaces.trinidad.context.ExternalContextDecorator.dispatch(ExternalContextDecorator.java:45)

at oracle.adfinternal.view.faces.config.rich.RecordRequestAttributesDuringDispatch.dispatch(RecordRequestAttributesDuringDispatch.java:45)

at org.apache.myfaces.trinidad.context.ExternalContextDecorator.dispatch(ExternalContextDecorator.java:45)

at org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl$OverrideDispatch.dispatch(FacesContextFactoryImpl.java:274)

at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:471)

at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:140)

at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:191)

at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:193)

at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._renderResponse(LifecycleImpl.java:993)

at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:420)

at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:249)

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)

at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)

at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)

at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)

at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:61)

at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:211)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:61)

at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:131)

at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:447)

at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)

at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:447)

at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)

at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)

at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:61)

at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)

at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:324)

at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)

at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)

at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)

at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:61)

at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:163)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:61)

at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:61)

at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3748)

at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3714)

at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)

at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2283)

at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2182)

at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1499)

at weblogic.work.ExecuteThread.execute(ExecuteThread.java:263)

at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

Caused by: java.lang.NullPointerException

at com.myApplication.setup.AifDCJboDataContol.beginRequest(AifDCJboDataContol.java:62)

at oracle.adf.model.dcframe.DataControlFrameImpl.doFindDataControl(DataControlFrameImpl.java:1654)

at oracle.adf.model.dcframe.DataControlFrameImpl.internalFindDataControl(DataControlFrameImpl.java:1510)

at oracle.adf.model.dcframe.DataControlFrameImpl.findDataControl(DataControlFrameImpl.java:1470)

at oracle.adf.model.BindingContext.internalFindDataControl(BindingContext.java:1268)

at oracle.adf.model.BindingContext.get(BindingContext.java:1218)

at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:318)

at oracle.adf.model.binding.DCBindingContainer.evaluateParameterWithElCheck(DCBindingContainer.java:1496)

at oracle.adf.model.binding.DCBindingContainer.findDataControl(DCBindingContainer.java:1596)

at oracle.jbo.uicli.binding.JUCtrlActionBinding.internalGetDataControl(JUCtrlActionBinding.java:566)

at oracle.jbo.uicli.binding.JUCtrlActionBinding.getDataControl(JUCtrlActionBinding.java:630)

at oracle.jbo.uicli.binding.JUCtrlActionBinding.invoke(JUCtrlActionBinding.java:765)

at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.executeEvent(PageLifecycleImpl.java:407)

at oracle.adfinternal.view.faces.model.binding.FacesCtrlActionBinding._execute(FacesCtrlActionBinding.java:252)

at oracle.adfinternal.view.faces.model.binding.FacesCtrlActionBinding.execute(FacesCtrlActionBinding.java:210)

at sun.reflect.GeneratedMethodAccessor484.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.sun.el.parser.AstValue.invoke(AstValue.java:187)

at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)

at oracle.adf.controller.internal.util.ELInterfaceImpl.invokeMethod(ELInterfaceImpl.java:173)

at oracle.adfinternal.controller.activity.MethodCallActivityLogic.execute(MethodCallActivityLogic.java:162)

at oracle.adfinternal.controller.engine.ControlFlowEngine.executeActivity(ControlFlowEngine.java:1074)

at oracle.adfinternal.controller.engine.ControlFlowEngine.doRouting(ControlFlowEngine.java:960)

at oracle.adfinternal.controller.engine.ControlFlowEngine.doRouting(ControlFlowEngine.java:859)

at oracle.adfinternal.controller.engine.ControlFlowEngine.invokeTaskFlow(ControlFlowEngine.java:245)

at oracle.adfinternal.controller.state.ChildViewPortContextImpl.invokeTaskFlow(ChildViewPortContextImpl.java:104)

at oracle.adfinternal.controller.state.ControllerState.createChildViewPort(ControllerState.java:1552)

at oracle.adfinternal.controller.ControllerContextImpl.createChildViewPort(ControllerContextImpl.java:91)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.createRegionViewPortContext(TaskFlowRegionModelViewPort.java:780)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.getViewPort(TaskFlowRegionModelViewPort.java:625)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.doProcessBeginRegion(TaskFlowRegionModelViewPort.java:253)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.processBeginRegion(TaskFlowRegionModelViewPort.java:155)

at oracle.adf.controller.internal.binding.TaskFlowRegionModelLocal.processBeginRegion(TaskFlowRegionModelLocal.java:12)

at oracle.adf.view.rich.component.fragment.UIXRegion$RegionContextChange.doChangeImpl(UIXRegion.java:1296)

at oracle.adf.view.rich.context.DoableContextChange.doChange(DoableContextChange.java:91)

at oracle.adf.view.rich.component.fragment.UIXRegion._beginInterruptibleRegion(UIXRegion.java:764)