DBLINK 创建

create public database link DBL170
  connect to XXXX  identified by XXX
  using '(DESCRIPTION =

                (ADDRESS_LIST =

                  (ADDRESS = (PROTOCOL = TCP)(HOST = XXXx.XXX.XXX.XX)(PORT = 1521))

                )

                (CONNECT_DATA =
                 (SERVER = DEDICATED)

                  (SERVICE_NAME = XXX)

                )

              )';