Before installing Oracle, make sure you have the following privileges:
Log on as Domain Administrator to install Oracle binaries.
You must be a member of the local Administrators group on all nodes where you wish to install Oracle.
You must have write permissions for the Active Directory objects corresponding to these nodes.
You must have write permissions on the DNS server to perform DNS updates.
You must have Domain Administrator privileges or belong to the Account Operators group, if you plan to create a new user account for VCS Helper service. If you plan to use an existing user account context for the VCS Helper service, you must know the password for the user account.
The user account for the VCS Helper service must be a domain user account and must be a member of the administrators group on the filers.