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JNDI Lookup problem in WSAD 4.1.1

 
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Hi:
I try to do the jndi lookup for one stateless ejb from stateful bean, but I get the following error message:
RemoteException occurred in server thread; nested exception is: com.ibm.ejs.container.UncheckedException: ; nested exception is: javax.ejb.EJBException: Name comp/env/ejb not found in context "java:".

The following is my ejb-jar.xml file:
<?xml version="1.0" encoding="UTF-8"?>
< !DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 1.1//EN" "http://java.sun.com/j2ee/dtds/ejb-jar_1_1.dtd">;
<ejb-jar id="ejb-jar_ID">
<enterprise-beans>
<session id="Hello">
<ejb-name>Hello</ejb-name>
<home>stateless.HelloHome</home>
<remote>stateless.Hello</remote>
<ejb-class>stateless.HelloBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
<session id="Welcome">
<ejb-name>Welcome</ejb-name>
<home>stateful.WelcomeHome</home>
<remote>stateful.Welcome</remote>
<ejb-class>stateful.WelcomeBean</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Container</transaction-type>
<ejb-ref id="EjbRef_1">
<ejb-ref-name>ejb/Hello</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>stateless.HelloHome</home>
<remote>stateless.Hello</remote>
<ejb-link>Hello</ejb-link>
</ejb-ref>
</session>
</enterprise-beans>
</ejb-jar>

And in my code I use the following code to do the lookup:
Object o = jndiCtx.lookup("java:comp/env/ejb/Hello");

But I got the error:
javax.ejb.EJBException: Name comp/env/ejb not found in context "java:".

any help is really appreciated. Thanks in advance.

 
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