PortableRemoteObject.narrow - ClassCastException

[Satish Vohra]

Hi All,
I migrated my EJB from Weblogic 7.0 to S1AS 7.
I have an servlet client accessing the an EJB.
I am getting the following exception when Servlet tries to marshel the Home object.
I verified the classpath in conifg\server.xml of the app server instance is correct.
SEVERE: StandardWrapperValve[keyservlet]: Servlet.service() for servlet keyservlet threw exception java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at it.eng.securitymanager.authentication.servlet.GetAccessServlet.doPost(GetAccessServlet.java:100)
Any idea what I am missing?
Thanks
Satish

[sadheman]

why are you using
"PortableRemoteObject.narrow(...."
rather you can use
"objInitialContext.lookup("java:comp/env/ejb/...");"
It will not generate ClassCastException and successfully looks the bean up.
sadheman

[sadheman]

hi Satish,
i need your help. i also shifted my EJB architecture from weblogic server to Sun ONE AS 7. Can you please guide me regarding following things:
1. how to generate the deployment descriptors?
2. did u generate your deployment descriptors for sun server using sun studio?
3. why database driver you have used?
i am asking the question as i am facing some svere problems in it.
waiting for your kind help. thanks in advance.
sadheman,

[Satish Vohra]

> 1. how to generate the deployment descriptors?
I looked into the samples of S1AS and converted the descriptors manually, since I had few EJBs.
You can also take a look at Sun One Migration tool.
> 2. did u generate your deployment descriptors for sun server using sun studio?
No
> 3. why database driver you have used?
I am using mySQL connector-j .
Hope it helps.
Satish

[Satish Vohra]

I resolved the ClassCastException problem with PortableRemoteObject.narrow() by putting the Client Jar (with Stub/Skeleton) in the classpath.
Satish