db link

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db link
：
查看所有db link
select * from dba_db_links;

create public database link bj_service_test
  connect to username identified by password
  using ' (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.100.** )(PORT = 1521))
   )(CONNECT_DATA =
      (SID = ora11)
      (SERVER = DEDICATED)
    )
  )';