1.安裝oracle資料庫(步驟省略)

           （IP：172.29.29.36）安裝路徑：E:\oracle\product\11.2.0\dbhome_1

2.安裝oracle gateways透明閘道器（安裝步驟省略）

           （IP：172.29.29.36）安裝路徑：E:\oracle\product\11.2.0\dbhome_1

             注：oracle gateways的安裝路徑應與oracle的路徑一致，據說可以不裝在一起，但是本人測試發現後續訪問的時候有報錯，具體原因木有找出來，但是裝在同一個目錄，經      過測試是可行的~~

3.sql server安裝伺服器地址：172.29.29.39

4.配置

（1）E:\oracle\product\11.2.0\dbhome_1\dg4msql\admin目錄下：

           initdg4msql.ora檔案內容

HS_FDS_CONNECT_INFO=172.29.29.39:1433//AstCTI #安裝sql server的ip地址，預設的埠，資料庫名
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER

           listener.ora.sample檔案內容

LISTENER =
 (ADDRESS_LIST=
      (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
 )

SID_LIST_LISTENER=
  (SID_LIST=
      (SID_DESC=
         (SID_NAME=dg4msql)
         (ORACLE_HOME=E:\oracle\product\11.2.0\dbhome_1)
         (PROGRAM=dg4msql)
      )
  )

#CONNECT_TIMEOUT_LISTENER = 0 
 

dg4msql  =
  (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
    (CONNECT_DATA=(SID=dg4msql))
    (HS=OK)
  ) 

                 tnsnames.ora檔案內容

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

dg4msql  =
  (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=172.29.29.36)(PORT=1521))
    (CONNECT_DATA=(SID=dg4msql))
    (HS=OK)
  ) 
 

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )

SID_LIST_LISTENER=
  (SID_LIST=
      (SID_DESC=
         (SID_NAME=dg4msql)
         (ORACLE_HOME=E:\oracle\product\11.2.0\dbhome_1)
         (PROGRAM=dg4msql)
      )
  )
ADR_BASE_LISTENER = E:\oracle

-- Drop existing database link 
drop database link DBTEST1;
-- Create database link 
create database link DBTEST1
  connect to SA identified by "123456" --sa 123456分別是sql server資料庫的使用者名稱密碼
  using 'dg4msql';

6.連線訪問：select * from [email protected] order by "begin_time" desc;

ps:如果習慣使用pl/sql的寶寶們，在你們的pl/sql的“工具”——“首選項”中配置了oracle主目錄名，則要把該配置下的listener.ora和tnsnames.ora檔案換成跟E:\oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN目錄下的這兩個檔案的內容。