Oracle与MySQL连接

环境：oracle 11.2.0.1.0 RHEL5.3 64bit   mysql Server version: 5.5.9

1：下载[ODBC Driver Manager] unionODBC2.2.14,解压后放入/u01/app/tools/unionodbc  目录下

[oracle@wonder tools]$ ls /u01/app/tools/unionodbc/
bin  include  lib

2：下载mysql-connector-odbc-3.51.30-linux-rhel5-x86-64bit.tar.gz解压重命名到my5
 
[oracle@szmlserver12_32 tools]$ ls /u01/app/tools/
my5  odbc.ini  unionodbc

3：配置 ODBC data source for MySQLConnector/ODBC driver

[oracle@wonder tools]$ cat /u01/app/tools/odbc.ini 
[myodbc3]

Driver = /u01/app/tools/my5/lib/libmyodbc3.so
SERVER = 22.4.22.16
PORT = 3306
USER = soft
PASSWORD = Ugfd3589
DATABASE = estore
OPTION = 3
SOCKET = 

4：设置环境变量

[oracle@wonder tools]$ cat ~/.bash_profile 
PATH=$PATH:$HOME/bin
export PATH

export ORACLE_BASE=/u01/app
export ORACLE_HOME=/u01/app/oracle
export ORACLE_SID=hidb
export
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/u01/app/tools/unionodbc/lib
export ODBCINI=/u01/app/tools/odbc.ini
export PATH=$ORACLE_HOME/bin:$PATH:/u01/app/tools/unionodbc/bin

红色为新增部分

5：测试连接成功

[oracle@wonder tools]$ isql myodbc3 -v
+---------------------------------------+
| Connected!                            |
|                                       |
| sql-statement                         |
| help [tablename]                      |
| quit                                  |
|                                       |
+---------------------------------------+
SQL> 

6：配置listener.ora

[grid@wonder ~]$ cat /u01/app/11.2.0/grid/network/admin/listener.ora
# listener.ora Network Configuration File: /u01/app/11.2.0/grid/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = wonder.easou.com)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = /u01/app/11.2.0

ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
SUBSCRIBE_FOR_NODE_DOWN_EVENT_LISTENER=OFF

SID_LIST_LISTENER=
   (SID_LIST=
        (SID_DESC=
          (SID_NAME= myodbc3)
          (ORACLE_HOME= /u01/app/oracle)
           (PROGRAM = dg4odbc)
           (ENVS=LD_LIBRARY_PATH=/u01/app/oracle/bin:/u01/app/tools/unionodbc/lib:/u01/app/tools/my5/lib)
         )
       )

7:配置tnsnames.ora,最后增加如下内容

myodbc3=
  (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SID = myodbc3)
    )
(HS = OK)
  )

8：配置HS

[oracle@wonder tools]$ cat /u01/app/oracle/hs/admin/initmyodbc3.ora 

HS_FDS_CONNECT_INFO = myodbc3
HS_FDS_TRACE_LEVEL = off
HS_FDS_SHAREABLE_NAME = /u01/app/tools/unionodbc/lib/libodbc.so
HS_LANGUAGE=american_america.we8iso8859p1
HS_NLS_NCHAR=UCS2

#
# ODBC specific environment variables
#
set ODBCINI= /u01/app/tools/odbc.ini

9：重启监听

[grid@wonder ~]$ lsnrctl stop
[grid@wonder ~]$ lsnrctl start

10：配置DBLINK

create database link myodbc connect to "soft" identified by "Ugfd3589" using 'myodbc3';   --前面要双引号才不报错

SQL> select count(*) from "acct_user"@myodbc;


  COUNT(*)
----------

13

但是发现 select * from "acct_user"@myodbc 时，只会显示一条数据，晕倒了，经google发现，通过更新驱动可以得到解决

下面的步骤是在上面的基础上更换了最新ODBC 5.5.2解决了问题，以及一oracle主机连接2个mysql服务器例子：

下载mysql-connector-odbc-5.2.2-linux-glibc2.3-x86-64bit.tar
http://www.mysql.com/downloads/connector/odbc/#downloads

1:更换配置odbc.ini

[oracle@wonder hs]$ cat /u01/app/tools/odbc.ini
[mysql203]
Driver = /u01/app/tools/my5/lib/libmyodbc5w.so
SERVER = 120.2.93.3
PORT = 3306
USER = search_wei
PASSWORD = aaaa
DATABASE = search_wei
OPTION = 3
SOCKET = 

[mysql213]
Driver = /u01/app/tools/my5/lib/libmyodbc5w.so
SERVER = 125.91.0.213
PORT = 3306
USER = droid
PASSWORD = bbbb
DATABASE = droid
OPTION = 3
SOCKET =

2： hs/admin 中

[oracle@wonder hs]$ ls admin/
extproc.ora      initmysql203.ora  listener.ora.sample
initdg4odbc.ora  initmysql213.ora  tnsnames.ora.sample

[oracle@wonder hs]$ cat admin/initmysql213.ora 

HS_FDS_CONNECT_INFO = mysql213
HS_FDS_TRACE_LEVEL = debug
HS_FDS_SHAREABLE_NAME = /u01/app/tools/unionodbc/lib/libodbc.so
HS_LANGUAGE=american_america.we8iso8859p1
HS_NLS_NCHAR=UCS2
#SELECT NULL COLUMN
HS_FDS_SQLLEN_INTERPRETATION = 32 
#DIRECT ACESS MYSQL INT COLUM
HS_FDS_FETCH_ROWS=1
set ODBCINI= /u01/app/tools/odbc.ini

[oracle@wonder hs]$ cat admin/initmysql203.ora 

HS_FDS_CONNECT_INFO = mysql203
HS_FDS_TRACE_LEVEL = debug
HS_FDS_SHAREABLE_NAME = /u01/app/tools/unionodbc/lib/libodbc.so
HS_LANGUAGE=american_america.we8iso8859p1
HS_NLS_NCHAR=UCS2
set ODBCINI= /u01/app/tools/odbc.ini

3： tnsnames.ora

mysql213=
  (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SID = mysql213)
    )
        (HS = OK)
  )

mysql203=
  (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SID = mysql203)
    )
        (HS = OK)
  )

4： listener.ora

SID_LIST_LISTENER=
   (SID_LIST=
        (SID_DESC=
          (SID_NAME= mysql203)
          (ORACLE_HOME= /u01/app/oracle)
           (PROGRAM = dg4odbc)
           (ENVS=LD_LIBRARY_PATH=/u01/app/oracle/bin:/u01/app/tools/unionodbc/lib:/u01/app/tools/my5/lib)
         )
        (SID_DESC=
          (SID_NAME= mysql213)
          (ORACLE_HOME= /u01/app/oracle)
           (PROGRAM = dg4odbc)
           (ENVS=LD_LIBRARY_PATH=/u01/app/oracle/bin:/u01/app/tools/unionodbc/lib:/u01/app/tools/my5/lib)
         )
       )

5：重启监听

6：分别建立到3和203的dblink，验证通过

create database link mysql203 connect to "search_wei" identified by "aaaa" using 'mysql203';

select * from "t_info_stat"@mysql203;

SQL> create database link mysql213 connect to "droid" identified by "bbbb" using 'mysql213';

select * from "ums_module"@mysql213;

哈哈！大功搞成！