External users and roles are in general defined by something external to Oracle Database.

In a Windows environment, they are defined by the operating system.

Learn about the external user and external role creation and management using either Oracle Administration Assistant for Windows or by a combination of Oracle Database command-line tools, Registry Editor, and other Windows tools.

Topics:

• Overview of Oracle Administration Assistant for Windows
  Learn about the Oracle Administration Assistant for Windows.
• Overview of Manually Administering External Users and Roles
  Instead of using Oracle Administration Assistant for Windows, you can manually configure administrators, operators, users, and roles to be authenticated by the operating system.