配置Oracle DBlink连接MySQL库

 

一 背景描述

某客户业务需求，需要在 Oracle 数据库上通过网络连接获取 MySQL 数据库中业务数据。现针对该需求，配置 Oracle 连接至 MySQL 库的 dblink 。

二 配置 Oracle DBlink

2.1 确认 [Oracle] 和 [DG4ODBC] 位数

SQL> select *   from v$version where rownum<=1; BANNER -------------------------------------------------------------------------------- Oracle Database   11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

 

$ file   $ORACLE_HOME/bin/dg4odbc /oracle/app/product/11.2.0/db_1/bin/dg4odbc:   ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses   shared libs), for GNU/Linux 2.6.18, not stripped

 

通过检查确认， [Oracle] 和 [DG4ODBC] 均是 64 位，这就要求 [ODBC Driver Manager] 和 [ODBC Driver] 也是 64 位组件

 

2.2 下载及安装 ODBC Driver Manager

ODBC 驱动管理器介质下载地址： www.unixodbc.org

为了方便测试，我这里直接调用操作系统自带的 ODBC 驱动管理器，不难看出 ODBC 驱动管理器 rpm 已经安装

# yum list|grep   -i unixodbc unixODBC.x86_64                       2.2.14-14.el6                        @dvd unixODBC-devel.x86_64                  2.2.14-14.el6                        @dvd unixODBC.i686                          2.2.14-14.el6                        dvd unixODBC-devel.i686                     2.2.14-14.el6                        dvd

 

ODBC 驱动管理器 rpm 包安装后相关文件

# rpm -ql   unixODBC.x86_64 /etc/odbc.ini /etc/odbcinst.ini /usr/bin/dltest /usr/bin/isql /usr/bin/iusql /usr/bin/odbc_config /usr/bin/odbcinst /usr/lib64/libboundparam.so.2 /usr/lib64/libboundparam.so.2.0.0 /usr/lib64/libesoobS.so.2 /usr/lib64/libesoobS.so.2.0.0 /usr/lib64/libgtrtst.so.2 /usr/lib64/libgtrtst.so.2.0.0 /usr/lib64/libmimerS.so.2 /usr/lib64/libmimerS.so.2.0.0 /usr/lib64/libnn.so.2 /usr/lib64/libnn.so.2.0.0 /usr/lib64/libodbc.so /usr/lib64/libodbc.so.2 /usr/lib64/libodbc.so.2.0.0 /usr/lib64/libodbccr.so.2 /usr/lib64/libodbccr.so.2.0.0 /usr/lib64/libodbcdrvcfg1S.so.2 /usr/lib64/libodbcdrvcfg1S.so.2.0.0 /usr/lib64/libodbcdrvcfg2S.so.2 /usr/lib64/libodbcdrvcfg2S.so.2.0.0 /usr/lib64/libodbcinst.so /usr/lib64/libodbcinst.so.2 /usr/lib64/libodbcinst.so.2.0.0 /usr/lib64/libodbcminiS.so.2 /usr/lib64/libodbcminiS.so.2.0.0 /usr/lib64/libodbcmyS.so /usr/lib64/libodbcmyS.so.2 /usr/lib64/libodbcmyS.so.2.0.0 /usr/lib64/libodbcnnS.so.2 /usr/lib64/libodbcnnS.so.2.0.0 /usr/lib64/libodbcpsqlS.so /usr/lib64/libodbcpsqlS.so.2 /usr/lib64/libodbcpsqlS.so.2.0.0 /usr/lib64/libodbctxtS.so.2 /usr/lib64/libodbctxtS.so.2.0.0 /usr/lib64/liboplodbcS.so.2 /usr/lib64/liboplodbcS.so.2.0.0 /usr/lib64/liboraodbcS.so.2 /usr/lib64/liboraodbcS.so.2.0.0 /usr/lib64/libsapdbS.so.2 /usr/lib64/libsapdbS.so.2.0.0 /usr/lib64/libtdsS.so.2 /usr/lib64/libtdsS.so.2.0.0 /usr/lib64/libtemplate.so.2 /usr/lib64/libtemplate.so.2.0.0 /usr/share/doc/unixODBC-2.2.14 /usr/share/doc/unixODBC-2.2.14/AUTHORS /usr/share/doc/unixODBC-2.2.14/COPYING /usr/share/doc/unixODBC-2.2.14/ChangeLog /usr/share/doc/unixODBC-2.2.14/NEWS /usr/share/doc/unixODBC-2.2.14/README /usr/share/doc/unixODBC-2.2.14/doc /usr/share/doc/unixODBC-2.2.14/doc/AdministratorManual /usr/share/doc/unixODBC-2.2.14/doc/AdministratorManual/index.html /usr/share/doc/unixODBC-2.2.14/doc/AdministratorManual/odbcinst.html /usr/share/doc/unixODBC-2.2.14/doc/AdministratorManual/php3.html /usr/share/doc/unixODBC-2.2.14/doc/AdministratorManual/unixODBC.gif /usr/share/doc/unixODBC-2.2.14/doc/AdministratorManual/unixODBCsetup.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/close.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/conne.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/dsn.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/gloss.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/index.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/intro.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/navi.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/odbc.css /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/query.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/Tutorial/resul.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/index.html /usr/share/doc/unixODBC-2.2.14/doc/ProgrammerManual/unixODBC.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual /usr/share/doc/unixODBC-2.2.14/doc/UserManual/Figure1.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual/Figure2.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual/Figure3.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual/Figure4.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual/Figure6.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual/My.sql /usr/share/doc/unixODBC-2.2.14/doc/UserManual/StarOfficeDataGrid.gif /usr/share/doc/unixODBC-2.2.14/doc/UserManual/index.html /usr/share/doc/unixODBC-2.2.14/doc/UserManual/unixODBC.gif /usr/share/doc/unixODBC-2.2.14/doc/index.html /usr/share/doc/unixODBC-2.2.14/doc/lst /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure.vsd /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure2.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure2.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure3.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure3.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure4.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure4.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure5.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure5.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure6.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure6.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure7.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure7.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure8.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure8.html /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure9.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/InternalStructure9.html /usr/share/doc/unixODBC-2.2.14/doc/lst/back.gif /usr/share/doc/unixODBC-2.2.14/doc/lst/next.gif /usr/share/doc/unixODBC-2.2.14/doc/smallbook.gif /usr/share/doc/unixODBC-2.2.14/doc/unixODBC.gif

 

2.3 下载及安装 ODBC Driver

 

下载地址：

https://downloads.mysql.com/archives/c-odbc/

 

解压介质并安装

sftp> put -r   "C:\Users\xh\Desktop\mysql-connector-odbc-5.1.12-linux-glibc2.5-x86-64bit.tar.gz" # mkdir -p /soft # tar zxvf   /soft/mysql-connector-odbc-5.1.12-linux-glibc2.5-x86-64bit.tar.gz # mv   /soft/mysql-connector-odbc-5.1.12-linux-glibc2.5-x86-64bit/*   /usr/local/mysql-connector-odbc/

 

2.4 配置 ODBC data source

# vi   /etc/odbc.ini [myodbc5] Driver =   /usr/local/mysql-connector-odbc/lib/libmyodbc5.so Description =   Connector/ODBC 5.1 Driver DSN SERVER =   192.168.210.125 PORT = 3306 USER = backup PASSWORD = mysql DATABASE =   zj20_sunft OPTION = 0 TRACE = OFF

 

创建 libodbcinst.so.2.0.0 、 libodbc.so.2.0.0 文件软链接

# cd /usr/lib64/ # ln -s   libodbcinst.so.2.0.0 libodbcinst.so.1 # ln -s   libodbc.so.2.0.0 libodbc.so.1

 

验证 ODBC 至 MySQL Server 端的连接

# isql myodbc5   -v +------------------------+ | Connected!       | |                 | |   sql-statement      | | help [tablename]   | | quit             | |                 | +-------------------------+ SQL>

 

2.5 配置 listener.ora

编辑监听配置文件，创建 LISTENER2 并对实例 myodbc5 进行静态注册

LISTENER2 =     (DESCRIPTION_LIST =       (DESCRIPTION =         (ADDRESS = (PROTOCOL = TCP)(HOST = rac2)(PORT = 1522))       )   )   SID_LIST_LISTENER2=        (SID_LIST=           (SID_DESC=              (SID_NAME=myodbc5)                (ORACLE_HOME=/oracle/app/product/11.2.0/db_1)              (PROGRAM=dg4odbc)                (ENV="LD_LIBRARY_PATH=/usr/lib64:/oracle/app/product/11.2.0/db_1/lib")            )    )

 

启动监听 LISTENER2 并查看监听状态

$ lsnrctl start LISTENER2 $ lsnrctl status LISTENER2

 

2.6 配置 tnsnames.ora

$ vi   tnsnames.ora myodbc5 =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST =   rac2)(PORT = 1522))     (CONNECT_DATA =       (SID = myodbc5)     )       (HS = OK)   )

 

验证 myodbc5 连接串配置

$ tnsping   myodbc5 TNS Ping Utility   for Linux: Version 11.2.0.4.0 - Production on 03-SEP-2018 18:54:56 Copyright (c)   1997, 2013, Oracle.  All rights   reserved. Used parameter   files: Used TNSNAMES   adapter to resolve the alias Attempting to   contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = rac2)(PORT = 1522))   (CONNECT_DATA = (SID = myodbc5)) (HS = OK)) OK (10 msec)

 

2.7 配置网关参数文件 initmyodbc5.ora

$ cd  $ORACLE_HOME/hs/admin $ vi   initmyodbc5.ora HS_FDS_CONNECT_INFO=myodbc5 # Data source   name in odbc.ini HS_FDS_TRACE_LEVEL=ON HS_FDS_SHAREABLE_NAME=/usr/lib64/libodbc.so HS_FDS_SUPPORT_STATISTICS=FALSE HS_LANGUAGE=AMERICAN_AMERICA.WE8ISO8859P15 # # ODBC env   variables set   ODBCINI=/etc/odbc.ini

 

2.8 创建 Oracle DBlink

SQL> create   public database link myodbc5 connect to "backup" identified by   "mysql" using 'myodbc5';

 

2.9 验证 Oracle DBlink

SQL> select   count(*) from "test"@myodbc5;   COUNT(*) ----------    1835008

 

2.10 MOS 参考文档

配置 Oracle 至 MySQL DBlink ：

Detailed Overview of Connecting Oracle to MySQL Using DG4ODBC Database Link ( 文档 ID 1320645.1)

Odbc Connection From Oracle To SQL*Server Fails With Errors Ora-28546 and Ora-2063 When Using Connection via Database Link. ( 文档 ID 1389492.1)

 

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