Oracle通过HSODBC访问mysql

一、环境OS：Linux myhostname 2.6.9-42.ELsmp #1 SMP Sat Aug 12 09:39:11 CDT 2006 i686 i686 i386 GNU/Linux      CentOS release 4.4 (Final)Oracle：Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod，数据库已经安装好MySQL：5.1.34-community for windows 二、安装配置1. 安装unixODBC，用root用户rpm -Uvh unixODBC-2.2.12-1.el4s1.1.i386.rpm 2. 安装mysql ODBC，用root用户rpm -Uvh mysql-connector-odbc-5.1.5-0.i386.rpm 3. 安装oracle gateway，用oracle用户我装的是10201_gateways_linux32.zipunzip 10201_gateways_linux32.zipcd gateways./runInstaller安装方法和oracle db 软件一样，我把gateway和db装一起了，共用一个OracleHOME 4. 配置/etc/odbc.ini[DSName]
Driver         =/usr/lib/libmyodbc5.so
Description    =MySQL
Server         =xxx.xxx.xxx.xxx
Port           =3306
User           =root
UID            =root
Password   = mypass
Database    =mysqldbname
Option         =3
Socket         =
charset        =utf8 测试ODBCisql -v DSName root mypass 5. 配置$ORACLE_HOME/hs/admin/initDSName.oraHS_FDS_CONNECT_INFO = DSName
HS_FDS_TRACE_LEVEL = 0
HS_FDS_SHAREABLE_NAME = /usr/lib/libmyodbc5.so 6. 配置listener.ora，加红色部分SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /usr/u01/app/oracle/product/10.2.0/db_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = BOSS)
      (ORACLE_HOME = /usr/u01/app/oracle/product/10.2.0/db_1)
      (SID_NAME = BOSS)
    )
    (SID_DESC =
      (SID_NAME = phpcms)
      (ORACLE_HOME = /usr/u01/app/oracle/product/10.2.0/db_1)
      (PROGRAM = hsodbc)
    )
  ) 7. 配置tnsnames.ora，添加DSName =
(DESCRIPTION =
       (ADDRESS_LIST =
           (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.125)(PORT = 1521))
       )
       (CONNECT_DATA = (SERVICE_NAME = DSName))
       (HS = OK)
) 8. 重启监听器并测试lsnrctl reload lsnrctl service Service "DSName" has 1 instance(s).
  Instance "DSName", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:3 refused:0
         LOCAL SERVER
The command completed successfully tnsping DSName Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.125)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = DSName)) (HS = OK))
OK (0 msec) 9. 建立dblinkCREATE PUBLIC DATABASE LINK linkname
 CONNECT TO "root"
 IDENTIFIED BY <PWD>
 USING 'DSName';10. 测试select "name" from t1@linkname; 三、遗留问题1. 字符集问题，最好oracle和mysql是utf8，否则中文有问题2. text字段会报错：select "textcol" from t1@linkname; ORA-28500: 连接 ORACLE 到非 Oracle 系统时返回此信息: 
[Generic Connectivity Using ODBC][MySQL][ODBC 5.1 Driver][mysqld-5.1.34-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '"t1" WHERE "id"=1' at line 1 (SQL State: 37000; SQL Code: 1064)
ORA-02063: 紧接着 2 lines (起自 DSName) 本来想用datadirect的mysql ODBC试试，可只支持mysql enterprise版本，实在不好找，以后有机会再说吧。