Re: Basic EJB problem

[Robert Castaneda]

Hi Hinrich,     Not too sure on the Oracle side, but maybe on the VisiBroker side....   When you receive a org.omg.CORBA.UNKNOWN it means that an exception was thrown that is not defined in the CORBA spec, which when using Java is often (although not always) a NullPointerException. So I would try looking at the parameters and types that are being marshalled over the wire and check that they are not null. From memory -per CORBA standard, you should also return empty strings "" , not nulls when wanting to return a "Null" type string.   regards,   -Robert   ----- Original Message ----- From: Hinrich M. Schencking To: [EMAIL PROTECTED] Sent: Wednesday, May 17, 2000 4:57 PM Subject: Basic EJB problem 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) ----------------------------------------------------------------