如何在oracle817中建立与SQLSERVER的DBLINK?
目前做的软件系统需要访问SQLSERVER中的数据,我的ORACLE版本是817,怎么才能建立DBLINK呢?

------解决方案--------------------
--建立ORACLE到SQL SERVER的分布式--

1、安装 Microsoft Data Access Components (MDAC)SDK ODBC driver



2、test whether CATHS has run.connect to the Oracle server

as schema "SYSTEM " and do "DESCRIBE SYS.HS_FDS_CLASS ".

If it does not exist, connect as SYS (or internal) and run

the CATHS script. (ORACLE_HOME\RDBMS\ADMIN\CATHS.SQL)



3、建立 SQL SERVER 数据源

TEST_SQLSERVER



4、配置tnsnames.ora. (ORACLE_HOME\NETWORK\ADMIN)

TEST_SQLSERVER =

(DESCRIPTION=

(ADDRESS=

(PROTOCOL=tcp)

(HOST= <IP地址> )

(PORT=1521)

)

(CONNECT_DATA=

(SID=TEST_SQLSERVER)

)

(HS=)

)



5、配置listener.ora. (ORACLE_HOME\NETWORK\ADMIN)

(SID_DESC=

(SID_NAME=TEST_SQLSERVER)

(ORACLE_HOME=D:\Oracle\iSuites)

(PROGRAM=hsodbc)

)



6、重启ORACLE监听.

CMD

LSNRCTL STOP

LSNRCTL START

LSNRCTL STATUS



7、添加网关配置文件. (ORACLE_HOME\HS\ADMIN)

文件名为:initTEST_SQLSERVER.ora

文件内容:

#

# HS init parameters

#

HS_FDS_CONNECT_INFO = TEST_SQLSERVER

HS_FDS_TRACE_LEVEL = 0

#HS_FDS_TRACE_FILE_NAME = TEST_SQLSERVER.trc



#

# Environment variables required for the non-Oracle system

#

#set <envvar> = <value>



8、进入ORACLE SQL*PLUS,建立数据库链.

CREATE DATABASE LINK TOSQL USING 'TEST_SQLSERVER ';
------解决方案--------------------
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