Hi

To enable authentication of an administrative user using password file authentication you must do the following:

Create an operating system account for the user.
If not already created, Create the password file using the ORAPWD utility:
ORAPWD FILE=filename PASSWORD=password ENTRIES=max_users


Set the REMOTE_LOGIN_PASSWORDFILE initialization parameter to EXCLUSIVE.
Connect to the database as user SYS (or as another user with the administrative privilege).
If the user does not already exist in the database, create the user. Grant the SYSDBA or SYSOPER system privilege to the user:
GRANT SYSDBA to scott;


This statement adds the user to the password file, thereby enabling connection AS SYSDBA.


Regards,
Sasikumar