I unfortunately can't answer to all your questions, but a few ones:
I ignored that 'internal' use was to be desupported... are you sure of this ?
- A password file is created automatically when you use 816 database config assistant, otherwise, if you create your database manually, and want a password file, you must use the command "orapwd" (type orapwd /? under a dos prompt for an explanation on how to use it...)
- If a password file is deleted, you must create another one, and make the grants again...
- There should be only one pwd per server, which will be used for any database of this server...
- You can't just rename the passord file, but if you wish to move it another place, or rename it anyway, you have 2 solutions:
1- delete the file, create another one (orapwd) and grant your privileged users again.
2- make a copy of your pwd file, delete it, then create another one with orapwd (new name, new place), and then rename the copy of your 'old' pwd file to the new one.
WARNING though: under UNIX OS, I was always unable to create a pwd file with name other than the default, and was unable too to locate it another place. I don't know under NT, as we don't use pwd files anyway...
The entries parameter is optional the password parameter is what will be ur internal password.Internal user is not desupported still in Oracle 8i.Whenever you assign sysdba or sysoper privilege to any of the user it is also added to the password file on the server and whenever you change password of a user who has been assigned sysdba or sysoper privilege his password is changed in the password file as well as in the database.But you will not be add more then 5 users if the entries = 5 then you will have to delete the password file and recreate it increasing the no of entries so it is better to plan before you create the password file.I will put the step below how to create a password file and assigne a user sysdba privilege
Make sure you have deleted the password file before creating a new one.