• 【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:UsersAdministrator>sqlplus / as sysdba
    
    SQL*Plus: Release 11.2.0.1.0 Production on 星期四 3月 13 16:11:03 2014
    
    Copyright (c) 1982, 2010, Oracle.  All rights reserved.
    
    
    连接到:
    Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 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(*)
    ----------
            12

    查看listener.ora是否正确:

    # listener.ora Network Configuration File: D:appAdministratorproduct11.2.0dbhome_1
    etworkadminlistener.ora
    # Generated by Oracle configuration tools.
    
    
    SID_LIST_LISTENER =
      (SID_LIST =
        (SID_DESC =
          (SID_NAME = CLRExtProc)
          (ORACLE_HOME = D:appAdministratorproduct11.2.0dbhome_1)
          (PROGRAM = extproc)
          (ENVS = "EXTPROC_DLLS=ONLY:D:appAdministratorproduct11.2.0dbhome_1inoraclr11.dll")
        )
    
        (SID_DESC =
          (GLOBAL_DBNAME=orcl)
          (ORACLE_HOME = D:appAdministratorproduct11.2.0dbhome_1)
          (SID_NAME =orcl)
        )
      )
    
    
    
    LISTENER =
      (DESCRIPTION_LIST =
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
        )
      )

    要特别注意里面的:

     (SID_DESC =

          (GLOBAL_DBNAME=orcl)
          (ORACLE_HOME = D:appAdministratorproduct11.2.0dbhome_1)
          (SID_NAME =orcl)
    )

    另外,查看tnsnames.ora是否正确:

    # tnsnames.ora Network Configuration File: D:appAdministratorproduct11.2.0dbhome_1NETWORKADMIN	nsnames.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 = 1521))
    
    orcl =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
        (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 64-bit Windows: Version 11.2.0.1.0 - Production on 13-3月 -2014 16:16:21
    
    Copyright (c) 1991, 2010, Oracle.  All rights reserved.
    
    正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
    LISTENER 的 STATUS
    ------------------------
    别名                      LISTENER
    版本                      TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production
    启动日期                  13-3月 -2014 13:17:27
    正常运行时间              02 小时 5858 秒
    跟踪级别                  off
    安全性                    ON: Local OS Authentication
    SNMP                      OFF
    监听程序参数文件          D:appAdministratorproduct11.2.0dbhome_1
    etworkadminlistener.ora
    监听程序日志文件          d:appadministratordiag	nslsnrggg-PClisteneralertlog.xml
    监听端点概要...
      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
    服务摘要..
    服务 "CLRExtProc" 包含 1 个实例。
      实例 "CLRExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...
    服务 "orcl" 包含 1 个实例。
      实例 "orcl", 状态 UNKNOWN, 包含此服务的 1 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 = ?', 7902) AT ORCL_SCOTT;
    GO
    
    DECLARE @v INT; 
    SET @v = 7902;
    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:

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  • 原文地址:https://www.cnblogs.com/zoufan/p/5387997.html
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