Problem occured while customizing the WorkList app(customapp) in 10.1.3

Question

Hi,
We are working on customizing the worklist application. By following the link we have done the changes specified in the topic "16.5 Customizing the Worklist Application" in http://download-uk.oracle.com/docs/cd/B31017_01/integrate.1013/b28981/worklist.htm#BHACDDFJ
After that we are able to deploy the customapp successfully. But while access the http://localhost/integration/customapp, "Internal Server Error. Please contact your administrator" has occured.
Following is the exception stacktrace in the application.log file :
08/03/11 15:46:12.217 customworklist: Servlet error
javax.servlet.ServletException: Error instantiating servlet 'Login'. Servlet class worklistapp.servlets.Login not found in web-application customworklist
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.servletClassNotFound(HttpApplication.java:4880)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.findServlet(HttpApplication.java:4846)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.findServlet(HttpApplication.java:4748)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.getRequestDispatcher(HttpApplication.java:2971)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:741)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:302)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:190)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
"worklistapp.servlets.Login" class is available in WEB-INF/classes folder.
And we are able to acess http://localhost/integration/worklistapp properly.
Please provide some inputs on this.
Thanks,
-Vidya

Answer 1

Hi,
I am able to resolve the below problem. We missed out the "parent" param in deploy task.
<oracle:deploy debug="true"
          deployerUri="deployer:oc4j:opmn://localhost:6004/home"
          userid="oc4jadmin"
          password="oc4jadmin"
          file="${worklist.ear.dir}/customworklist.ear"
          deploymentname="customapp" contextroot="/integration/customapp"
          bindallwebapps="default-web-site"
          parent="orabpel"          logFile="./build.log"
     />
now we are able to see the login page properly. But now the problem is we are not able to login into the application. Following error has occured while trying login:
08/03/12 10:58:37.476 customworklist: Servlet error
java.lang.LinkageError: loader constraints violated when linking oracle/tip/pc/services/identity/config/ISConfiguration class
     at oracle.tip.pc.services.identity.config.ISConfiguration.load(ISConfiguration.java:288)
     at oracle.tip.pc.services.identity.config.ISConfiguration.load(ISConfiguration.java:243)
     at oracle.tip.pc.services.identity.config.ISConfiguration.<clinit>(ISConfiguration.java:85)
     at Login.jspService(_Login.java:120)
     at com.orionserver[Oracle Containers for J2EE 10g (10.1.3.3.0) ].http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
     at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:724)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:414)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java:259)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.access$100(ServletRequestDispatcher.java:51)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher$2.oc4jRun(ServletRequestDispatcher.java:193)
     at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:283)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:198)
     at worklistapp.servlets.BaseServlet.validateSession(BaseServlet.java:227)
     at worklistapp.servlets.BaseServlet.doGet(BaseServlet.java:140)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:302)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:190)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
Any help in this regard is appreciated.
Thanks,
-Vidya