copy c:\oracle\product\10.2.0\client_1\NETWORK\ADMIN\tnsnames.ora "%USERPROFILE%\tnsnames.ora.backup" call vi.cmd c:\oracle\product\10.2.0\client_1\NETWORK\ADMIN\tnsnames.ora copy c:\oracle\product\10.2.0\client_1\NETWORK\ADMIN\tnsnames.ora "%USERPROFILE%\tnsnames.ora.last"