Ray,
Thanks for taking time to respond my post.
I have done it already and once or twice i succeeded connecting trading networks, too. But because of fluctuating behavior of TNS listner, i cannot connect to TN for long and create some TN objects.
I had make sure about the classpath, too. classes12.zip is in classpath of the IS.
If you can find out something more about this problem, it will be a great help.
Regards,
Shant