Oracle通过ODBC连接MySql

折腾了oracle到mysql的dblink访问，分享给大家：

要连接的两端：

oracle rhel 6.5 64位 11.2.0.4

mysql 64 5.5 utf8

操作都在oracle服务器上完成：

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--检查需要的rpm包，需要的包如下：

libtool-ltdl-1.5.22-6.1.x86_64.rpm

mysql-5.0.77-3.el5.x86_64.rpm

mysql-connector-odbc-3.51.26r1127-1.el5.x86_64.rpm

perl-DBI-1.52-2.el5.x86_64.rpm

unixODBC-2.2.11-7.1.x86_64.rpm

上面unixODBC-2.2.11-7.1、mysql-5.0.77-3.el5、mysql-connector-odbc是需要的包，其他是安装这些包的前提。

---------------------------------------------------------------

安装完后检查

# rpm -qa |grep unixODBC

unixODBC-2.2.14-12.el6_3.x86_64

unixODBC-devel-2.2.14-12.el6_3.x86_64

# rpm -qa |grep mysql

qt-mysql-4.6.2-26.el6_4.x86_64

mysql-server-5.1.71-1.el6.x86_64

mysql-libs-5.1.71-1.el6.x86_64

mysql-5.1.71-1.el6.x86_64

mysql-connector-odbc-5.1.5r1144-7.el6.x86_64

mysql-devel-5.1.71-1.el6.x86_64

--编辑/etc/odbc.ini

vi /etc/odbc.ini

[myodbc]

Driver = /usr/lib64/libmyodbc5.so

Description = MySQL ODBC 5.1 Driver DSN

SERVER = 192.168.0.2

PORT = 3306

USER = my_sql

Password = my_sql

Database = my_db

OPTION = 3

SOCKET =

#charset = gbk

--切换到oracle用户

# su - oracle

--编辑环境变量配置文件，主要是LD_LIBRARY_PATH和最后面两项

$ vi ~/.bash_profile

# Get the aliases and functions

if [ -f ~/.bashrc ]; then

. ~/.bashrc

fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

export ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

export ORACLE_SID=nop

export LD_LIBRARY_PATH=$ORACLE_HOME/lib

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/hs/lib

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib:/usr/lib64

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/jkd/jre/lib/i386

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/jkd/jre/lib/i386/server

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/rdbms/lib

export CLASS_PATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib

export CLASS_PATH=$CALSS_PATH:$ORACLE_HOME/rdbms/jlib

export CLASS_PATH=$CALSS_PATH:$ORACLE_HOME/network/jlib

export TNS_ADMIN=$ORACLE_HOME/network/admin

export NLS_LANG=american_america.AL32UTF8

export ORACLE_TERM=xterm

export EDITOR=vi

export PATH=$ORACLE_HOME/bin:$PATH

export LANG=en_US

ODBCINI=/etc/odbc.ini; export ODBCINI

ODBCSYSINI=/etc; export ODBCSYSINI

ODBCINSTINI=/etc/odbc.ini

export ODBCINSTINI

--使配置生效

source ~/.bash_profile

--查看odbc版本及参数文件路径

$odbcinst -j

unixODBC 2.2.14

DRIVERS............: /etc/odbcinst.ini

SYSTEM DATA SOURCES: /etc/odbc.ini

FILE DATA SOURCES..: /etc/ODBCDataSources

USER DATA SOURCES..: /etc/odbc.ini

SQLULEN Size.......: 8

SQLLEN Size........: 8

SQLSETPOSIROW Size.: 8

--测试 My SQL ODBC 驱动

$isql myodbc

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

| Connected! |

| |

| sql-statement |

| help [tablename] |

| quit |

| |

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

SQL> quit

--配置 HSODBC 程序

vi $ORACLE_HOME/hs/admin/initmyodbc.ora

HS_FDS_CONNECT_INFO = myodbc

HS_FDS_TRACE_LEVEL = debug

HS_FDS_TRACE_LEVEL = 4

HS_FDS_SHAREABLE_NAME = /usr/lib64/libmyodbc5.so

HS_LANGUAGE=AMERICAN_AMERICA.UTF8 --此处要跟目标mysql的字符集一致

HS_NLS_NCHAR = UCS2

HS_IDLE_TIMEOUT =1440

HS_LONG_PIECE_TRANSFER_SIZE=1258291

HS_FDS_SQLLEN_INTERPRETATION=64 --此处要跟目标mysql的位数一致

set ODBCINI = /etc/odbc.ini

--配置监听

$ cd $TNS_ADMIN

$ ls

listener.ora samples shrept.lst tnsnames.ora

$ vim listener.ora

# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

# Generated by Oracle configuration tools.

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = mypc)(PORT = 1521))

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

)

)

SID_LIST_LISTENER=

(SID_LIST=

(SID_DESC=

(PROGRAM = dg4odbc)

(SID_NAME= myodbc)

(ORACLE_HOME= /u01/app/oracle/product/11.2.0/dbhome_1)

(ENVS=LD_LIBRARY_PATH=/u01/app/oracle/product/11.2.0/dbhome_1/lib:/u01/app/oracle/product/11.2.0/dbhome_1/odbc/lib:/usr/lib:/usr/local/lib:/u01/app/oracle/product/11.2.0/dbhome_1/hs/lib:/usr/lib64)

)

)

ADR_BASE_LISTENER = /u01/app/oracle

vim tnsnames.ora

添加：

MYODBC =

(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST = mypc)(PORT = 1521))

)

(CONNECT_DATA =

(SID = myodbc)

)

(HS = OK)

)

--重启监听，要有 MYODBC 服务

$ lsnrctl stop

$ lsnrctl start

--tnsping测试服务

$ tnsping myodbc

TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on

Copyright (c) 1997, 2013, Oracle. All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = mypc)(PORT = 1521))) (CONNECT_DATA = (SID = myodbc)) (HS = OK))

OK (0 msec)

--创建dblink

create public database link mysql connect to "my_sql" identified by "my_sql" using 'myodbc';

--测试

select * from "my_tab"@mysql;