Oracle 8.1.5
Solaris 7

I am receiving the following error(s) in listener.log when trying to run my java app:

TNS-12502: tNS:listener received no CONNECT_DATA from client

*** According to Oracle ***
TNS-12502 TNS:listener received no CONNECT_DATA from client

Cause: No CONNECT_DATA was passed to the listener.

Action: Check that the service name resolved from TNSNAMES.ORA has the CONNECT_DATA component of the connect descriptor.

I have filled in the CONNECT_DATA on client (in tnsnames.ora) with as many variables as I could find that are valid. They all match tns on the server, and I cannot get past this point. any suggestions?