如何在oracle上建dblink连接远程mysql数据库

oracle：系统redhat 5.5 数据库：11.2.0.1

mysql：系统centos6.3 数据库：5.6.21

1.先装 mysql-connector-odbc和unixODBC

[root@rac1 ~]# rpm -qa | grep mysql

mysql-5.0.77-4.el5_4.2

mysql-5.0.77-4.el5_4.2

mysql-connector-odbc-5.1.13-1.rhel5

[root@rac1 ~]# rpm -qa | grep ODBC

unixODBC-devel-2.2.11-7.1

unixODBC-2.2.11-7.1

unixODBC-devel-2.2.11-7.1

unixODBC-2.2.11-7.1

2.配置 /etc/odbc.ini

[myodbc3]

Driver = /usr/lib64/libmyodbc5.so

Description = MySQL ODBC 5.1 Driver DSN

SERVER = 192.1.1.200

PORT = 3306

USER = bi

Password = 123456

Database = chanpin

OPTION = 3

SOCKET =

charset = utf8

3.配置/etc/odbcinst.ini

[MySQL]

Description = ODBC for MySQL

Driver = /usr/lib64/libmyodbc5.so

Setup = /usr/lib64/libodbcmyS.so

FileUsage = 1

4.测试连接

[root@rac1 ~]# isql myodbc3 -v

+---------------------------------------+

| Connected!|

| |

| sql-statement |

| help [tablename] |

| quit |

| |

+---------------------------------------+

SQL>

5.配置oracle环境变量

export ORACLE_BASE=/u01/app/oracle

export GRID_HOME=/u01/grid

export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1

export ORACLE_SID=rac1

export BASE_PATH=/usr/sbin:$PATH

export PATH=$ORACLE_HOME/bin:$BASE_PATH:/usr/bin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:/usr/local/lib:$ORACLE_HOME/hs/lib:/usr/lib64

export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib

ODBCINI=/etc/odbc.iniexport ODBCINI

ODBCSYSINI=/etcexport ODBCSYSINI

ODBCINSTINI=/etc/odbc.ini

export ODBCINSTINI

6.配置监听

listener.ora:

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.1.1.100)(PORT = 1522))

)

)

SID_LIST_LISTENER=

(SID_LIST=

(SID_DESC=

(PROGRAM = dg4odbc)

(SID_NAME= myodbc3)

(ORACLE_HOME= /u01/app/oracle/product/11.2.0/db_1)

(ENVS=LD_LIBRARY_PATH=/u01/app/oracle/product/11.2.0/db_1/lib:/lib:/usr/lib:/usr/local/lib:/u01/app/oracle/product/11.2.0/db_1/hs/lib:/usr/lib64)

)

)

tnsname.ora:

myodbc3=

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.1.1.100)(PORT = 1522))

(CONNECT_DATA =

(SID = myodbc3))

(HS = OK)

)

7.配置odbc监听

路径：$ORACLE_HOME/hs/admin

注意：名字要跟odbc配置的名字一样 我这里是myodbc3

[oracle@rac1 admin]$ cat initmyodbc3.ora

HS_FDS_CONNECT_INFO = myodbc3

HS_FDS_TRACE_LEVEL = ON

HS_FDS_TRACE_FILE_NAME = odbc_test.log

HS_FDS_TRACE_LEVEL = 4

HS_FDS_SHAREABLE_NAME = /usr/lib64/libodbc.so

HS_FDS_SUPPORT_STATISCTICS = FALSE

HS_LANGUAGE = AMERICAN_AMERICA.WE8ISO8859P1

HS_FDS_SQLLEN_INTERPRETATION=32

set ODBCINI = /etc/odbc.ini

8.测试下监听

[oracle@rac1 admin]$ tnsping myodbc3

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 25-NOV-2014 03:02:16

Copyright (c) 1997, 2009, Oracle. All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.1.1.100)(PORT = 1522)) (CONNECT_DATA = (SID = myodbc3)) (HS = OK))

OK (0 msec)

9.创建dblink

SQL>create public database link myodbc connect to "bi" identified by "123456" using'myodbc3'

SQL>select count(*) from "t_user"@myodbc

COUNT(*)

----------

53980

EXEC master.dbo.sp_addlinkedsrvlogin @rmtsrvname = N'MYSQLLINK',@useself = N'False',@locallogin = N'sa',@rmtuser = N'root',@rmtpassword = N'wison'

之后就可以使用

SELECT * FROM OPENQUERY (MYSQLLINK, 'SELECT * FROM wisontest.sssss')

来查询mysql数据库中的数据了．

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