【SQL Server数据迁移】64位的机器：SQL Server中查询ORACLE的数据

从SQL Server中查询ORACLE中的数据，可以在SQL Server中创建到ORACLE的链接服务器来实现的，但是根据32位 、64位的机器和软件，

需要用不同的驱动程序来实现。

在64位的机器上，通过访问接口：OracleProvide for OLE DB，来实现。

1、机器环境和软件环境

操作系统是：windows 7旗舰版 64位，SQL Server 20008R2  64  位，Oracle 11g 11.2.0.1.0   64 位。

2、ORACLE环境的设置

连接oracle，修改scott用户的密码为tiger，并给账户解锁，尝试登录，查询表：

 C:\Users\Administrator>sqlplus / as sysdba

 SQL*Plus: Release 11.2.0.1. Production on 星期四 3月  :: 

 Copyright (c) , , Oracle.  All rights reserved.

 连接到:
 Oracle Database 11g Enterprise Edition Release 11.2.0.1. - 64bit Production
 With the Partitioning, OLAP, Data Mining and Real Application Testing options

 SQL> alter user scott identified by tiger;

 用户已更改。

 SQL> alter user scott account unlock;

 用户已更改。

 SQL> connect scott/tiger
 已连接。
 SQL> select count(*) from emp;
   COUNT(*)
 ----------
    

查看listener.ora是否正确：

 # listener.ora Network Configuration File: D:\app\Administrator\product\11.2.\dbhome_1\network\admin\listener.ora
 # Generated by Oracle configuration tools.

 SID_LIST_LISTENER =
   (SID_LIST =
     (SID_DESC =
       (SID_NAME = CLRExtProc)
       (ORACLE_HOME = D:\app\Administrator\product\11.2.\dbhome_1)
       (PROGRAM = extproc)
       (ENVS = "EXTPROC_DLLS=ONLY:D:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
     )

     (SID_DESC =
       (GLOBAL_DBNAME=orcl)
       (ORACLE_HOME = D:\app\Administrator\product\11.2.\dbhome_1)
       (SID_NAME =orcl)
     )
   )

 LISTENER =
   (DESCRIPTION_LIST =
     (DESCRIPTION =
       (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = ))
     )
   )

要特别注意里面的：

(SID_DESC =

(GLOBAL_DBNAME=orcl)
      (ORACLE_HOME = D:\app\Administrator\product\11.2.0\dbhome_1)
      (SID_NAME =orcl)
)

另外，查看tnsnames.ora是否正确：

 # tnsnames.ora Network Configuration File: D:\app\Administrator\product\11.2.\dbhome_1\NETWORK\ADMIN\tnsnames.ora
 # Generated by Oracle configuration tools.

 ORACLR_CONNECTION_DATA =
   (DESCRIPTION =
     (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
     )
     (CONNECT_DATA =
       (SID = CLRExtProc)
       (PRESENTATION = RO)
     )
   )

 LISTENER_orcl =
   (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = ))

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

特别是：

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

查看监听器的状态是否正常：

 SQL> host lsnrctl status

 LSNRCTL for -bit Windows: Version 11.2.0.1. - Production on -3月 - ::

 Copyright (c) , , Oracle.  All rights reserved.

 正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=)))
 LISTENER 的 STATUS
 ------------------------
 别名                      LISTENER
 版本                      TNSLSNR for -bit Windows: Version 11.2.0.1. - Production
 启动日期                  -3月 - ::
 正常运行时间               天  小时  分  秒
 跟踪级别                  off
 安全性                    ON: Local OS Authentication
 SNMP                      OFF
 监听程序参数文件          D:\app\Administrator\product\11.2.\dbhome_1\network\admin\listener.ora
 监听程序日志文件          d:\app\administrator\diag\tnslsnr\ggg-PC\listener\alert\log.xml
 监听端点概要...
   (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=)))
 服务摘要..
 服务 "CLRExtProc" 包含  个实例。
   实例 "CLRExtProc", 状态 UNKNOWN, 包含此服务的  个处理程序...
 服务 "orcl" 包含  个实例。
   实例 "orcl", 状态 UNKNOWN, 包含此服务的  个处理程序...
 命令执行成功

3、设置链接服务器。

需要特别注意的是，数据源orcl指的是：tnsnames.ora文件中的orcl服务名。

第一步，选择“新建链接服务器”

第二步，一定要选择 Oracle Provide for OLE DB

第三步，输入产品：oracle，数据源：orcl

第四步，输入oracle的用户名和密码，这个需要根据实际情况设置，输入完后，点确定就好。

4、测试查询

 

 select * from openquery(xxx, 'SELECT * FROM emp')

返回结果：

5、用代码实现：

 /****** Object:  LinkedServer [ORCL_SCOTT]    Script Date: 03/13/2014 16:25:21 ******/
 EXEC master.dbo.sp_addlinkedserver
        @server = N'ORCL_SCOTT',
        @srvproduct=N'oracle',
        @provider=N'OraOLEDB.Oracle',
        @datasrc=N'orcl'
 GO

  /* For security reasons the linked server remote logins password is changed with ######## */
 EXEC master.dbo.sp_addlinkedsrvlogin
        @rmtsrvname=N'ORCL_SCOTT',
        @useself=N'False',
        @locallogin=NULL,
        @rmtuser=N'scott',
        @rmtpassword='tiger'
 go

 select * from openquery(ORCL_SCOTT, 'SELECT * FROM scott.emp')

还可以用？表示绑定变量：

 EXEC ( 'SELECT * FROM scott.emp') AT ORCL_SCOTT;
 GO
 EXEC ( 'SELECT * FROM scott.emp WHERE MGR = ?', ) AT ORCL_SCOTT;
 GO
 DECLARE @v INT;
 SET @v = ;
 EXEC ( 'SELECT * FROM scott.emp WHERE MGR = ?', @v) AT ORCL_SCOTT;
 GO 

6、通过openrowset函数来实现，更简单。

 select *  from openrowset('OraOLEDB.Oracle','orcl';'scott';'tiger','select * from SCOTT.EMP')

返回结果：