一、环境
公司网站系统使用的是IIS + Oracle
但公司某系统使用的是Sqlserver 2000, 但其数据需要做成报表放到网站上，为简化编程，使用Oracle做透明网关，定期从Sqlserver 抓取数据的方式
A: Web Server
•OS: Windows Server 2008
•IP: 10.108.3.10
•安装软体：IIS, Oracle Client
•image
B: Oralce DB Server
•OS: Windows Server 2008
•IP: 10.108.3.20
•安装软体： Oracle DB, Oracle Gateway
•image
C: Sqlserver 2000 DB Server
•OS: Windows Server 2003
•IP: 10.108.5.100
•安装软体: Sqlserver 2000
这里面A和C的安装配置都很简单，主要说下B机器 Oracle透明网关的配置
二、Oracle透明网关配置
1. gateway安装
当然是要先安装好我们的Oracle DB,做好其它业务。然后再来安装Gateway
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2. 配置 E:\Oracle\product\11.2.0\tg_1\dg4msql\admin\initdg4msql.ora
HS_FDS_CONNECT_INFO=[10.108.5.100].MSSQLSERVER.SQLDB
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
Oracle Gateway在此文件中默认将sqlserver 2000的IP，实例名，数据库名以 / 分隔，这种设置后续会报错，改为以 . 分隔则OK
#HS_FDS_CONNECT_INFO=[10.108.5.100]/MSSQLSERVER/SQLDB
3. 配置E:\Oracle\product\11.2.0\tg_1\NETWORK\ADMIN\listener.ora
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SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = dg4msql) #此处为配置文件SID，要与initdg4msql.ora中的名字对应
(ORACLE_HOME = E:\Oracle\product\11.2.0\tg_1)
(PROGRAM = dg4msql) #此处为配置文件目录名称，Oracle 11g中都为dg4msql，不需变更（注1）
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.108.3.20)(PORT = 1522))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
)
)
ADR_BASE_LISTENER = E:\Oracle\product\11.2.0\tg_1
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注1：如果将此处的dg4msql变掉，在最后通过Oracle访问SQL SERVER时会报以下错误
ORA-28545: 连接代理时 Net8 诊断到错误
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: 紧接着 2 lines
4. 配置E:\Oracle\product\11.2.0\tg_1\NETWORK\ADMIN\tnsnames.ora
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dg4msql =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.108.3.20)(PORT = 1522))
)
(CONNECT_DATA =
(SERVICE_NAME = dg4msql)
)
(HS = OK)
)
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5. 配置E:\Oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora
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SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = E:\Oracle\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:E:\Oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
#以下是其它业务的DB
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = E:\Oracle\product\11.2.0\dbhome_1)
(SID_NAME = ORCL)
)
#以下是透明网关的设置
(SID_DESC =
(SID_NAME = dg4msql)
(ORACLE_HOME = E:\Oracle\product\11.2.0\dbhome_1)
(PROGRAM = dg4msql)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.108.3.20)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)
ADR_BASE_LISTENER = E:\Oracle
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6. 配置E:\Oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\tnsnames.ora
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dg4msql =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.108.3.20)(PORT = 1522))
)
(CONNECT_DATA =
(SERVICE_NAME = dg4msql)
)
(HS = OK)
)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)
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7. 建立DB link
-- Create database link
create database link SQLSERVERLINK
connect to sa identified by password
using 'dg4msql';