[RESOLVED] "Unable to find the current servlet" error

Question

Hi,
I had a couple of ADF applications deployed to the application server, and running. I was working on adding security to a new one, and started getting the following error whenever I tried to access one of my pages after deployment:
javax.servlet.ServletException: JAAS-OC4J: JAZNFilter.doFilter - unable to find the current servlet (full trace from the application.log below)
I initially assumed it was a problem with the new application, but when I tried to access the older ones, which had been working, I found I get the same error. I've spoken to the app server administrator, who assures me nothing has been changed in the OC4J/J2EE area.
I'm also getting the following error in server.log, but not at exactly the same time as the application log error, so I'm not sure it's related:
07/11/12 17:00:05 Internal error raised trying to instantiate web-application
java.lang.InstantiationException: No application named 'datatags' found in the server
at com.evermind.server.http.HttpServer.getHttpApplication(HttpServer.java:705)
at com.evermind.server.http.HttpSite.getApplication(HttpSite.java:438)
at com.evermind.server.http.AJPRequestHandler.initAJP(AJPRequestHandler.java:733)
at com.evermind.server.http.AJPRequestHandler.initRequest(AJPRequestHandler.java:469)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:194)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:133)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:534)
Any ideas what might be causing this? Or where I should look for more info?
Thanks.
From application.log:
07/11/12 16:48:18 MembershipApplicationView: Servlet error
javax.servlet.ServletException: JAAS-OC4J: JAZNFilter.doFilter - unable to find the current servlet
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:663)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:253)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)
at oracle.adfinternal.view.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:157)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at oracle.security.jazn.oc4j.JAZNFilter$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:228)
at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:197)
at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:123)
at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:103)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:659)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:224)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:133)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:534)
Message was edited by:
CdG

Answer 1

Never mind, please ignore this entire post. I've been trying to figure out how to add security based on the JDeveloper help and some forum posts, and I'd unknowingly configured an ADF Security filter in the middle of my otherwise container-managed security. If I delete that, everything 'miraculously' starts working again.
Sorry to have wasted your time.