Hi

I also have a connect string(created from net8assistant) to the remote database and i am able to connect it at sql plus using scott@am/tiger
the name of the connect string in tnsnames.ora is as

am =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 1.0.0.30)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = amit.pras.com)
)
)

thanks
pras