USER_ROLE_PRIVS describes the roles granted to the current user.

Column Datatype NULL Description
USERNAME VARCHAR2(30)   Name of the user, or PUBLIC
GRANTED_ROLE VARCHAR2(30)   Name of the role granted to the user
ADMIN_OPTION VARCHAR2(3)   Indicates whether the grant was with the ADMIN OPTION (YES) or not (NO)
DEFAULT_ROLE VARCHAR2(3)   Indicates whether the role is designated as a DEFAULT ROLE for the user (YES) or not (NO)
OS_GRANTED VARCHAR2(3)   Granted by the operating system (YES) or not (NO); occurs if configuration parameter OS_ROLES = true.