Thank you, Ron.

Yet, one thing remains, perhaps based on my missconception:

I took your ScopedTest and changed according to my use case:
TravelAgentBean now implements another @Remote interface, namely 
SpecialTravelAgent. This interface is not available in the clients class loader.

When the client now does a lookup, he gets a remoteproxystub, but cannot use it 
because that other business interface ist not being loaded from the remote 
class loader.

This is my case: i want to use an ejb that has one remote interface know to the 
client, but has various other remote interfaces NOT KNOWN to the client.
Is that possible?

Just add some interface SpecialTravelAgent to the deployment, BUT not to the 
client.jar!

The exception in the Client.java then is

  | javax.naming.CommunicationException [Root exception is 
java.lang.ClassNotFoundException: com.titan.travelagent.SpecialTravelAgent]
  |     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:786)
  |     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627)
  |     at javax.naming.InitialContext.lookup(InitialContext.java:351)
  |     at com.titan.client.Client.testScoped1(Client.java:46)
  |     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |     at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |     at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |     at java.lang.reflect.Method.invoke(Method.java:585)
  |     at junit.framework.TestCase.runTest(TestCase.java:154)
  |     at junit.framework.TestCase.runBare(TestCase.java:127)
  |     at junit.framework.TestResult$1.protect(TestResult.java:106)
  |     at junit.framework.TestResult.runProtected(TestResult.java:124)
  |     at junit.framework.TestResult.run(TestResult.java:109)
  |     at junit.framework.TestCase.run(TestCase.java:118)
  |     at junit.framework.TestSuite.runTest(TestSuite.java:208)
  |     at junit.framework.TestSuite.run(TestSuite.java:203)
  |     at 
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
  |     at 
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
  |     at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
  |     at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
  |     at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
  |     at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
  | Caused by: java.lang.ClassNotFoundException: 
com.titan.travelagent.SpecialTravelAgent
  |     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
  |     at java.security.AccessController.doPrivileged(Native Method)
  |     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
  |     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
  |     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
  |     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
  |     at java.lang.Class.forName0(Native Method)
  |     at java.lang.Class.forName(Class.java:242)
  |     at 
sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:707)
  |     at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:651)
  |     at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:588)
  |     at 
java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:628)
  |     at 
java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294)
  |     at 
sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:238)
  |     at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1500)
  |     at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1463)
  |     at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
  |     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
  |     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
  |     at java.rmi.MarshalledObject.get(MarshalledObject.java:135)
  |     at 
org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
  |     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:710)
  |     ... 21 more
  | 
  | 
  | 

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