On the client computer from which you will connect:
SQLNET.ORA file in the directory where Oracle was installed.
The file is located in
ORACLE_HOME\Network\Admin directory under the main Oracle installation directory where
ORACLE_HOME is the name assigned for the Oracle home during installation.
SQLNET.ORA and set the value of the following parameter as follows:
sqlnet.authentication_services = (NTS)
Note: Ensure this parameter is not commented out with a
# at the beginning of the line. You may need to add this parameter.
TNSNAMES.ORA file in the directory where Oracle was installed.
This file is located in
Copy the server’s database entry to the
TNSNAMES.ORA file on the client computer.