Oracle recommends that you configure Oracle Database files, directories, and registry settings to provide full control to authorized database administrators (DBAs).
If you have created a database using Oracle Database Configuration Assistant or upgraded a database using Oracle Database Upgrade Assistant, then no further action is required.
Learn about the permissions automatically set by Oracle Universal Installer, Oracle Database Configuration Assistant, and Oracle Database Upgrade Assistant and the steps to set these permissions manually.
In addition to the various groups listed in Oracle Database software installation creates the following groups for Oracle internal use and sets permissions on files and registry entries for these groups to ensure that the Oracle software functions properly. The group memberships and permissions set for the following groups must not be changed or removed:
Your operating system documentation for more information about modifying NTFS file system and Windows registry settings