Need Oracle 9i help

Hi,
I'm encountering the following problem when I'm connecting to the server using oracle 9i Client.

ORA-12699 Native Service Internal Error.

I have a windows 2003 server on which I have installed oracle 9i database server and the management/integration server.
On a windows xp client machine, I have installed oracle 9i client.
I have a listener configured running on port 1521. Now I configured this on the client also.

But when I created the net service name at the client it showed the following error.

There is no firewall running and I changed the default username/password.

Plz don't try google. It's worthless. This is an undocumented error. The trace file showed that it is not able to read from the tnsnav.ora which is not at all necessary since my machine is on the same subnet.

I've been doin this for the past 15 days but not successful.
Can somebody plz help me out?

Hoping for an answer.

Thank you.
 
Perhaps Bug 3592772 applies?

Cause

Bug:3592772: ORA-12699 / client cannot connect with NTS authentication

Solution

1. Do not use NTS authentication. Hash out or remove the line SQLNET.AUTHENTICATION_SERVICES from the client's SQLNET.ORA file.

2. Apply Patch Set Release 9.2.0.7 to the client or interim(backport) patch

References

Bug 3592772 - Client Receives Ora-12699 And Could Not Connect With Nts Authentication
 
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