Oracle Automatic Storage Management File Access Control

Oracle ASM File Access Control restricts the access of files to specific Oracle ASM clients that connect as SYSDBA.

An Oracle ASM client is a database, which is identified by the name of the user that owns the database instance home. Oracle ASM File Access Control uses this user name to identify a database. Oracle ASM File Access Control restricts access based on the operating system and effective user identification number of a database owner.

• Creation of New User Groups and Users for Separation of Database Administration Duties
  Oracle Database 19c provides access control to separate the roles on Windows.
• About Disk Group User Replacement
  The identity of an Oracle ASM user can be changed from one operating system user to another operating system user.
• About Changing File Access Control While the File is Open
  Oracle Database 19c enables users to change the ownership, permissions, or group membership of a file even while the file is open.