Basic EJB problem

[Hinrich M. Schencking]

I start with EJB some days ago. I am using JDeveloper 3.0 and Oracle 8i (8.1.6)   My special interest goes to stateless session beans. Everything works fine with my tests. But I just have primitive types or String as return values.   Now I add a new Serializable class with some public members. This class should now be returned from an EJB call.   Looking up the EJB and creating a new instance works. But if I try to call the new method, the following exception occurs. What is wrong? Why does it works with primitives and with objects it doesn't?   ---------------------------------------------------------------- ::: org.omg.CORBA.UNKNOWN ::::A non CORBA exception is caught by the ORB runtime on the server::::::: null org.omg.CORBA.UNKNOWN[minor=16, completed=MAYBE]  at com.visigenic.vbroker.orb.SE.read(Compiled Code)  at com.visigenic.vbroker.orb.GiopStubDelegate.invoke(Compiled Code)  at com.visigenic.vbroker.orb.GiopStubDelegate.invoke(Compiled Code)  at org.omg.CORBA.portable.ObjectImpl._invoke(Compiled Code)  at ejbtest1._st_EJB1Remote.getSomething(Compiled Code)  at ejbtest1.MyEJBJSClient.main(Compiled Code) ----------------------------------------------------------------