Using Oracle Enterprise Manager, you can 3 types of authentication schemes: Repository-Based Authentication: Default authentication option. SSO-Based Authentication:The single sign-on authentication. Enterprise User Security Based Authentication: Users for Oracle database in LDAP server. Therefore, OEM has 3 types of acess: Super Administrator: Can do anything. Administrator: Can do what you define. Repository Owner: Database administrator for the Management Repository. To create use in OEM it is very easy, you have to do the follow steps: Go to OEM Grid Control Page Click “Setup” -> Click “Administrators” -> Click “Create” ->…