Owner 로 DB Link 검증 및 삭제 ** Sys, system 은 안됨 12345678910111213141516171819202122232425262728293031323334353637383940414243select OWNER, DB_LINK, USERNAME, HOST, CREATED ,DECODE(OWNER -- Public DB Link ,'PUBLIC' ,' SELECT GLOBAL_NAME FROM GLOBAL_NAME@'||DB_LINK||';'||chr(13)|| 'drop public database link '||db_link||';', -- Private DB Link '-- step 1.1'||chr(13)|| -- Private DB 작동 여부 파악 -- 아래 평션 생성..