Quote Originally Posted by Owais
Ok but to do daily network related task, we create one User on windows for network person with Power User rights but how can I restrict him not to copy the database folder in any other location.

Note:One window user for DBA with user & ORA_DBA rights
I was being sarcastic with my previous comment. If someone is a sys admin then they have full access to the server. you need to setup a daily hot backup and any other jobs that need to run on the database like a stats job yourself, and let them know what you want them to do. Can you create one folder/volume/partition to use as your backup directory and have them only backup that? I administer Unix servers and we have an /oracle/backups volume on every server. Anything we backup to that directory via our hot backup gets backed up by the backup system, if we don't backup to that directory then it doesn't get backed up.

if someone is a sys admin they can hose your database whether intentionally or by accident.