Per contabilizzare le sovvenzioni tramite un ruolo:
select grantee, table_name, privilege
from dba_tab_privs
where
table_name = 'my_stored_proc'
and
owner = 'ownerOfObject'
and
(grantee = 'userA'
or
grantee in
(select granted_role
from dba_role_privs
where grantee = 'userA'
)
)