dba_host_aces shows access control entries (=ACE) defined in host access control lists. dba_host_aces, user_host_aces and cdb_host_aces. select ace.host, ace.lower_port, ace.upper_port, ace.ace_order, ace.start_date, ace.end_date, ace.grant_type, ace.inverted_principal, ace.principal, ace.principal_type, ace.privilege from dba_host_aces ace;