URGENT WLS5 and WLS6 !!!!

[mr raj]

Hi All,
I have written a EJBClient Program. My Weblogic Server is running on WL Version 5 and I compiled this client program using the jar files of weblogic 6. The program compiled but when I try to run then while getting InitialContext it throws Exception...
My client program look likes this...
public static void main(String args[])
{
try
{
final Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
env.put(Context.PROVIDER_URL, "t3://localhost:7001");
environment = new InitialContext (env);

}
catch(Exception e)
{ }
}
Exception is ......
java.lang.NullPointerException
at weblogic.rjvm.RJVMManager.findOrCreate(RJVMManager.java:191)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:246

at javax.naming.InitialContext.init(InitialContext.java:222)
at javax.naming.InitialContext.<init>(InitialContext.java:198)
at EJBClient.main(EJBClient.java:29)
Can any body help me out.
Can I do it this way ???
Regards
Raj

[George Brown]

Unfortunately you've run into a weblogic cross-version problem. Using the WLS version 6 classes you can't connect to a WLS version 5 server. WLS has not been made backwards-compatible (yet).
Apparently, WLS will be backwards compatible from version 7 - I think that means that version 7 will be able to connect to version 6.1, and subsequent versions will also be backwards-compatible, but none of the other versions will be able to connect to previous versions.
So you can't do it (yet)... so for now use version 5 client classes for a version 5 server.

[Anonymous]

It�s supposedly backward compatible from version 6.2 (somewhere in october ??).
Versions 5 and 6 have completely different code bases.

[mr raj]

Thanks a lot guys.
I was not sure whether this is possible or not.You cleared this thing otherwise I could have make effort trying to achieve it, resulting in wastage of time.
Thanks and Regards
MR Raj

[George Brown]

Sven,
do you know whether the news about backwards compatibility is available on any of BEA's websites? I need to find out more.