No more data to read from socket

[mars76]

Hi,
I am using type 4 drivers to connect to the database and i have two oracle servers one on NT and one on Solaris. I am using the classes102.zip which i have downloaded from Oracle and I am able to connect to the OracleServer on NT but the same piece of code giving the exception
No more data to read from socket
But when i tried with the oracle client on my machine I am able to connect to both the servers..
Please tell me where i went wrong...and what can be the reason..
Thanks in advance..
Sateesh