基本步骤 说明 HostName dmserver Win Server Oracle Database Microsoft SQL Server UserName:User Password:User Database:CFDai TableName:Test 都使用 tcp/ip 默认端口 基本步骤 : 安装 TRANSPARENT GATEWAY FOR MSSQL选件 输入主机名和数据库名 安装完后 在d:\\oracle\\ora 的目录下产生一个目录D:\\oracle\\ora \\tg msql 同时 自动生成文件 inittg msql ora 其中内容为 HS_FDS_CONNECT_INFO=dmserver CFDai #服务器名 数据库名 HS_FDS_TRACE_LEVEL=OFF HS_FDS_RECOVERY_ACCOUNT=RECOVER HS_FDS_RECOVERY_PWD=RECOVER 注 第一行可写为HS_FDS_CONNECT_INFO= dmserver;DATABASE=CFDai : 配置 LISTENER ORA SID_LIST_LISTENER = (SID_LIST = …… (SID_DESC = (GLOBAL_DBNAME = tg msql) #可重命名 (PROGRAM = tg msql) (SID_NAME = tg msql) #可重命名 (ORACLE_HOME = D:\\oracle\\ora ) #数据库主目录名 ) ) : 停止并重启 DATABASE 和 LISTENER服务 : 配置 tnsnames ora 在文件尾增加以下内容 tg msql = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = dmserver)(PORT = )) ) (CONNECT_DATA = (SID = tg msql) ) (HS=OK) ) : 在SQL Plus或SQLPlus Worksheet中通过如下语句建立数据库连接 CREATE PUBLIC DATABASE LINK DB_SQL CONNECT TO User IDENTIFIED by User USING tg msql ; : 在SQL Plus或SQLPlus Worksheet中测试 select * from test@DB_SQL; 取消数据库连接 DROP PUBLIC DATABASE LINK DB_SQL; FW:多谢！我也刚刚搞定 原来是一个低级错误——tnsnames ora文件配置错误（直接拷贝后修改 结果没改主机地址！指到别的地方了 ） ）） 另外注意 lsnrctl中显示status=unknow不必惊讶 正常 今天阅读了Oracle i附带的Oracle Transparent Gateways文档 整理了一下 供参考！ 搜索关键字 Oracle Transparent Gateways 透明网关 Oracle database applications can be executed against non Oracle database servers using SQL*Connect or the Oracle Open Gateway Oracle Transparent Gateways The capabilities SQL mappings data type conversions and interface to the remote non Oracle system are contained in the gateway The gateway interacts with Heterogeneous Services to provide the transparent connectivity beeen Oracle and non Oracle systems The gateway can be installed on any machine It can be on the same machine as the Oracle database or on the same machine as the non Oracle system or on a third machine as a standalone Each configuration has its advantages and disadvantages The issues to consider when determining where to install the gateway are neork traffic operating system platform availability hardware resources and storage Configuring the Gateway After installing the gateway(supplied with Oracle i setup package) perform the following tasks to configure the gateway for Microsoft SQL Server: Configuring the Gateway(ORACLE_HOME\\tg msql\\admin\\init ora on gateway side) Configuring Oracle Net Services Listener for the Gateway(listener ora on gateway side) Configuring the Oracle Database Server for Gateway Access(tnsnames ora on oracle side) Creating Database Links(on oracle side) Configuring the Gateway Task : Choose a System Identifier for the Gateway The gateway system identifier (SID) is an alphanumeric character string that identifies a gateway instance The SID is used as part of the file name for the initialization parameter file Task : Customize the Initialization Parameter File The initialization parameter file must be available when the gateway is started 如 ORACLE_HOME\\tg msql\\admin\\initmytg msql ora 注意 HS_FDS_CONNECT_INFO= server_name database_name HS_FDS_DEFAULT_OWNER = 缺省用户 Configuring Oracle Net Services Listener for the Gateway The gateway requires Oracle Net Services to provide transparent data access After configuring the gateway configure Oracle Net Services to work with the gateway Configure Oracle Net Services TNS Listener for the Gateway If you are already running a TNS listener that listens on multiple database SIDs add only the following syntax to SID_LIST in the existing listener ora file: SID_LIST_LISTENER= (SID_LIST= (SID_DESC= ) (SID_DESC= ) (SID_DESC= (SID_NAME=mytg msql) (ORACLE_HOME=oracle_home_directory) (PROGRAM=tg msql) ) ) Configuring the Oracle Database Server for Gateway Access Before you use the gateway to access Microsoft SQL Server data you must configure the Oracle database server to enable munication with the gateway over Oracle Net Services Configuring Oracle Net Services for the Oracle Database Server The tnsnames ora file is required by the Oracle database server accessing the gateway but not by the gateway Edit the tnsnames ora file to add a connect descriptor for the gateway : connect_descriptor= (DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (HOST= host_name) (PORT= port_number) ) (CONNECT_DATA= (SID= mytg msql)) (HS=OK)) (HS=OK) specifies that this connect descriptor uses the Oracle Heterogeneous Services option Creating Database Links 接下来 Configuring the Gateway for Multiple Microsoft SQL Server Databases Configuring the Gateway Create Two Initialization Parameter Files > cd ORACLE_HOME\\tg msql\\admin > copy inittg msql ora inittg msql ora > copy inittg msql ora inittg msql ora Change the value of the HS_FDS_CONNECT_INFO parameter in the new files For inittg msql ora enter the following: HS_FDS_CONNECT_INFO=msql_nt db For inittg msql ora enter the following: HS_FDS_CONNECT_INFO=msql_nt db Configuring Oracle Net Services Listener for the Gateway Add Entries to listener ora Add o new entries to the TNS listener configuration file listener ora SID_LIST_LISTENER= (SID_LIST= (SID_DESC= (SID_NAME=tg msql) (ORACLE_HOME= oracle_home_directory) (PROGRAM=tg msql) ) (SID_DESC= (SID_NAME=tg msql ) (ORACLE_HOME= oracle_home_directory) (PROGRAM=tg msql) ) (SID_DESC= (SID_NAME=tg msql ) (ORACLE_HOME= oracle_home_directory) (PROGRAM=tg msql) ) ) Configuring the Oracle Database Server for Gateway Access tnsnames ora old_db_using=(DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (PORT= ) (HOST=ghost)) (CONNECT_DATA= (SID=tg msql)) (HS=OK)) new_db _using=(DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (PORT= ) (HOST=ghost)) (CONNECT_DATA= (SID=tg msql )) (HS=OK)) new_db _using=(DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (PORT= ) (HOST=ghost)) (CONNECT_DATA= (SID=tg msql )) (HS=OK)) Creating Database Links cha138/Article/program/Oracle/201311/18459