Dropping a Compatibility Role

All compatibility roles, with the exception of SYS_AUTH_SA_ROLE and SYS_AUTH_SSO_ROLE can be dropped. SYS_AUTH_SA_ROLE and SYS_AUTH_SSO_ROLE are automatically dropped when SYS_AUTH_DBA_ROLE is dropped.

Prerequisites
Administrative privilege over the role being dropped.
Task
The WITH REVOKE clause is required only when dropping a compatibility role which is granted to users or roles.
To delete a compatibility role, execute one of the following statements:
Drop Condition Statement

Compatibility role not currently granted to any user or role.

DROP ROLE role_name

Compatibility role currently granted to users or roles.

DROP ROLE role_name WITH REVOKE
role_name cannot be SYS_AUTH_SA_ROLE or SYS_AUTH_SSO_ROLE.