Cause: Your OS (Operating System) user is not a member of ora_dba Group.
Action: Make your operating system user as a member of ora_dba Group.
Action: Make your operating system user as a member of ora_dba Group.
Operation: The following activity has to perform from Operating System Administrative user.
1. Open the command prompt (cmd) and write compmgmt.msc and hit Enter.
2. Select Group from Local user and Groups
3. Right Click on ora_dba and Click Add Group to
4. Now Click Add ...
5. Now write your OS username in the box “Enter the object name to select” and click OK”
