AUTH_LIST_AUTHORITIES_FOR_AUTHID table function
The AUTH_LIST_AUTHORITIES_FOR_AUTHID table function returns
all authorities held by the authorization ID, either found in the
database configuration file or granted to an authorization ID directly
or indirectly through a group or a role.
OBJECTOWNERS administrative view - Retrieve object ownership information
The OBJECTOWNERS administrative view
returns all object ownership information for every authorization ID
of type USER that owns an object and that is defined in the system
catalogs from the currently connected database.