Oracle Database B10772-01 Administrator's Manual page 382

Administering Enterprise Roles
To remove a user from the list of enterprise role grantees:
1.
2.
3.
13-32 Oracle Database Advanced Security Administrator's Guide
Select a user from the list of grantees in the Users tabbed window.
Choose Remove. The selected user is removed from the list.
Choose Apply. The user is removed as a grantee for that enterprise role in the
enterprise domain.