1. 서버현황 DB IP : 접속PORT : SID : USER : PASSWORD : 2. DB Port 접속 여부 3. TNS설정 /oracle/102/network/admin/tnsnames.ora DBLink_name = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = sid_name) ) ) 4. DB Link 생성 CREATE DATABASE LINK "DBLink_name" CONNECT TO "유저아이디" IDENTIFIED BY "유저암호" using 'DBLink_name' 5. DB Link 생성여부 조회 sel..