語法 1.Create DB Link: CREATE [PUBLIC] DATABASE LINK CONNECT TO IDENTIFIED BY USING ''; 2.Drop DB Link: DROP [PUBLIC] DATABASE LINK ; 3.Query DB Link: SELECT db_link, owner, host, username FROM dba_db_links ORDER BY db_link; 4.Use DB Link for SELECT: SELECT * FROM .@; 範例 create public database link oblink4 connect to kory identified by kory using 'oracle3'; select * from kory.tablea@oblink4
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