CREATE PUBLIC DATABASE LINK MYDBLINKCONNECT TO RAMS IDENTIFIED BY RAMSUSING '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.2.252)(PORT = 1521)))(CONNECT_DATA =(SID = hrarelease)))';drop public database link RAMS_XY;select owner,object_name from dba_objects where object_type='DATABASE LINK';