X Servlet Error: Servant is not of the expected type.: org.omg.CORBA.BAD_PARAM:

[Shivani Patel]

Hi ,
While running the deployed application i am getting the following error. what can be the cause of problem???
org.omg.CORBA.BAD_PARAM: Servant is not of the expected type. minor code: 0 completed: No
at com.ibm.rmi.corba.ClientDelegate.servant_preinvoke(ClientDelegate.java:754)
at org.omg.CORBA.portable.ObjectImpl._servant_preinvoke(ObjectImpl.java:213)
at com.nextgen.security._MuserHome_Stub.findByUsername(_MuserHome_Stub.java:456)
at com.nextgen.security.MuserAccessBean.findByUsername(MuserAccessBean.java:64)
at loginValidate_jsp_1._jspService(loginValidate_jsp_1.java:97)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:139)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:286)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:415)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:544)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:159)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:286)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:106)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:499)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:278)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:105)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:67)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:123)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:122)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:315)
at com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnection.java:60)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:313)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:242)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:122)
The flow of calling entity bean is as under:
1) loginValidate.jsp
2)com.nextgen.security.MuserAccessBean
i)findByUsername
3)Entity Bean com.nextgen.security.Muser
Where could be the problem here in client side or server side???
Thanks in advance.

------------------
Shivani Patel,
N InfoNET Pvt. Ltd

[Mazin Ghafadgi]

HI There ,
i have the Same Problem, i have donwload the Websphere 4.0.1
Single Advance Edition, and i have installed my EAR File, but when i run
the Client to Access the EJB , i have the Same Exception Above.
i have Fixed this problem by Installing the Fix Pack 4.0.3 .
so i recommnded that you insatll the Fix Pack for your Websphere Version. and you problem will be Solved Completley.
Have Fun
Mazin Ghafadgi