Problem in accessing EJB while deployed by WSAD 5.1

[Bimal Patel]

Hello All,

I am facing a problem from last one day while accessing an EJB from the servlet. It always gives an error on the browser like:

Error 500: Context: localhost/nodes/localhost/servers/server1, name: DemoSessionBean1: First component in name DemoSessionBean1 not found. 

On the console I get:

[11/16/05 18:46:42:781 EST] 576865c5 WebGroup      E SRVE0026E: [Servlet Error]-[Context: localhost/nodes/localhost/servers/server1, name: DemoSessionBean1: First component in name DemoSessionBean1 not found.]: javax.naming.NameNotFoundException: Context: localhost/nodes/localhost/servers/server1, name: DemoSessionBean1: First component in name DemoSessionBean1 not found.  Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL    :-o	    mg.org/CosNaming/NamingContext/NotFound:1.0
at com.ibm.ws.naming.ipcos.WsnOptimizedNamingImpl.do_resolve_complete_info(WsnOptimizedNamingImpl.java:968)
at com.ibm.ws.naming.cosbase.WsnOptimizedNamingImplBase.resolve_complete_info(WsnOptimizedNamingImplBase.java:1399)
at com.ibm.WsnOptimizedNaming._NamingContextStub.resolve_complete_info(Unknown Source)
at com.ibm.ws.naming.jndicos.CNContextImpl.cosResolve(CNContextImpl.java:3491)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1519)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1480)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookupExt(CNContextImpl.java:1187)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookup(CNContextImpl.java:1067)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:132)
at javax.naming.InitialContext.lookup(InitialContext.java:360)
at org.websphere.demo.common.EJBHomeFactory.lookUpHome(EJBHomeFactory.java:26)
at org.websphere.demo.controller.DemoServletEJBHandler.obtainDemoBean(DemoServletEJBHandler.java:57)
at org.websphere.demo.controller.DemoServletEJBHandler.doGet(DemoServletEJBHandler.java:45)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276)
at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:443)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672)

1. ejb-jar.xml
Note:
1. < = [ <br /> 2. > = ]

[ejb-jar id="ejb-jar_ID"]
  [display-name]DemoApp1EJB[/display-name]
  [enterprise-beans]
    [session id="DemoSessionBean1"]
      [ejb-name]DemoSessionBean1[/ejb-name]
      [local-home]org.websphere.demo.model.ejb
        .DemoSessionBean1LocalHome[/local-home]
      [local]org.websphere.demo.model.ejb
        .DemoSessionBean1Local[/local]
      [ejb-class]org.websphere.demo.model.ejb
        .DemoSessionBean1Bean[/ejb-class]
      [session-type]Stateless[/session-type]
      [transaction-type]Container[/transaction-type]
    [/session]
  [/enterprise-beans]
[/ejb-jar]
 

2. ibm-ejb-jar-bnd.xmi
Note:
1. < = [ <br /> 2. > = ]

[ejbbnd:EJBJarBinding xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:ejbbnd="ejbbnd.xmi" xmlns:ejb="ejb.xmi" xmi:id="EJBJarBinding_1132078911156"]
  [ejbJar href="META-INF/ejb-jar.xml#ejb-jar_ID"/]
  [ejbBindings xmi:id="EnterpriseBeanBinding_1132078911156" jndiName="DemoSessionBean1"]
    [enterpriseBean xmi:type="ejb:Session" href="META-INF/ejb-jar.xml#DemoSessionBean1"/]
  [/ejbBindings]
[/ejbbnd:EJBJarBinding] 

3. Servlet sniplet for accessing the bean

  .
  .
  .
  Context objInitContext = new InitialContext();
  Object obj1 = objInitContext.lookup("DemoSessionBean1");
  PortableRemoteObject objPortRemoteObj = new PortableRemoteObject();
  DemoSessionBean1LocalHome demoBeanHome = 
                            objPortRemoteObj.narrow(obj1, pClass);
  DemoSessionBean1Local objDemoSessionBeanLocal = 
                            demoBeanHome.create();
  .
  .
  .

I need to resolve this ASAP. Thanks in advance...

[ November 16, 2005: Message edited by: Bimal Patel ]

[ November 16, 2005: Message edited by: Bimal Patel ]
[ November 16, 2005: Message edited by: Bimal Patel ]

[Scott Selikoff]

2 questions...

Are you sure your EJB is deployed? Have you checked the server log file to see if there was a problem loading it?

Are you sure the EJB is up and running? Use the Universal Test Client and attempt to use the bean from within there. If this is successful, the problem is in your servlet or WAR, else the problem is in the EJB.

[Bimal Patel]

Hi,

Yes, it is deployed correctly. I can see that by running universal test client. BTW, how can I run the admin tool? Do I need to install the server??