Error calling remote oc4j from within oc4j

Question

I'm running a session bean inside one instance of oc4j, and trying to make a remote rmi call to another oc4j instance, but running into a problem.
When both the "client" side oc4j and server side oc4j are 10.1.3.0.0, everything proceeds smoothly. When the "client" side oc4j is upgraded to 10.1.3.3.0, I get the following error when doing the lookup:
'TestBean' remote object not found during name lookup
Caused by: javax.naming.NamingException: Disconnected: oracle.classloader.util.AnnotatedClassNotFoundException:
Missing class: oracle.oc4j.rmi.interceptors.PropagatedIdentity
Dependent class: com.evermind.io.ClassLoaderObjectInputStream
Loader: oc4j:10.1.3
Code-Source: /C:/java/oc4j/j2ee/home/lib/oc4j-internal.jar
Configuration: <code-source> in META-INF/boot.xml in C:\java\oc4j\j2ee\home\oc4j.jar
This load was initiated at testbean.root:0.0.0 using the Class.forName() method.
The missing class is not available from any code-source or loader in the system.
at com.evermind.server.rmi.RMIClientContext.lookup(RMIClientContext.java:64)
Poking around, I found that the 10.1.3 oc4j doesn't contain any "PropagatedIdentity" class, but 10.1.3.3 does contain that class in the oc4j-internal.jar.
Has anybody been seen this error or know what causes it? I assume that it should be possible to make a remote call from within one oc4j to another oc4j running a different version, but perhaps there's a conflict with the client classloading that prevents this.
Any input is appreciated.
Thanks,
-- Dave

Answer 1

Hi Stephen,
Using a registry, for example UDDI [1], would be one solution. WLS has
a complete UDDI implementation builtin [2] for this purpose.
You are correct, you need to pass the service address location found in
the <service> section of the WSDL.
Hope this helps,
Bruce
[1]
http://www.uddi.org/
[2]
http://e-docs.bea.com/wls/docs81/webserv/uddi.html
Stephen Kurlow wrote:
>
I am not sure what I need to do to be able to call a remote webservice (runs on
another weblogic server instance running on another machine in the same network)
from within a webservice. I have 2 wsdl files and I have created webservice controls
from them. I have successfully written code in the first webservice to instantiate
the parms to the 2nd webservice and invoked the 2nd webservice when both webservices
are deployed to the same weblogic server instance. So i can see the params being
marshalled and unmarshalled in the test browser.
Now how do I install the 2nd webservice on another weblogic server instance and
instruct the 1st web service to call the 2nd webservice residing on another weblogic
server instance? I presume some kind of lookup (url?) is needed and is it via
what is contained in the wsdl file?
Thanks in advance,
Stephen Kurlow