javax.naming.CommunicationException when running J2EE server

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Hi,
I have installed the J2EE 1.3 Server and deployed a testEJB.
However, when I run the client, I get a javax.naming.CommunicationException: org.omg.CORBA.NO_PERMISSION
Can somebody provide a hint? The error stack is as follows:
javax.naming.CommunicationException: org.omg.CORBA.NO_PERMISSION: minor code: 0 completed: No
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at com.sun.corba.ee.internal.iiop.messages.ReplyMessage_1_2.getSystemException(ReplyMessage_1_2.java:93)
at com.sun.corba.ee.internal.iiop.ClientResponseImpl.getSystemException(ClientResponseImpl.java:108)
at com.sun.corba.ee.internal.POA.GenericPOAClientSC.invoke(GenericPOAClientSC.java:136)
at com.sun.corba.ee.internal.corba.ClientDelegate.is_a(ClientDelegate.java:833)
at org.omg.CORBA.portable.ObjectImpl._is_a(ObjectImpl.java:76)
at org.omg.CosNaming.NamingContextHelper.narrow(NamingContextHelper.java:52)
at com.sun.jndi.cosnaming.CNCtx.callResolve(CNCtx.java:326)
at com.sun.jndi.cosnaming.CNCtx.lookup(CNCtx.java:373)
at com.sun.jndi.cosnaming.CNCtx.lookup(CNCtx.java:351)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at com.sun.enterprise.naming.factory.IIOPObjectFactory.getObjectInstance(IIOPObjectFactory.java:42)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:307)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:158)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at com.huxiaoqin.client.InterestCalculatorClient.createInterestCalculator(InterestCalculatorClient.java:85)
at com.huxiaoqin.client.InterestCalculatorClient.<init>(InterestCalculatorClient.java:44)
at com.huxiaoqin.client.InterestCalculatorClient.main(InterestCalculatorClient.java:315)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:172)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at com.huxiaoqin.client.InterestCalculatorClient.createInterestCalculator(InterestCalculatorClient.java:85)
at com.huxiaoqin.client.InterestCalculatorClient.<init>(InterestCalculatorClient.java:44)
at com.huxiaoqin.client.InterestCalculatorClient.main(InterestCalculatorClient.java:315)

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Could somebody please help me with this question that has
plagued me for 3 days?! Thanks,
Cindy Hu

[ruilin yang]

Please check classpathes, such as java_home, etc.

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The client classpath includes not only the java_home, but
the EJBClient.jar created by the J2EE server.
There is no run-time error from my EJBClient, except
that it cannot communicate with the testEJB. I suspect
it is a problem with security/role. Help!
Cindy