ORACLE到SYBASE连接的实现 ORACLE实现异种数据库连接服务的技术叫做透明网关（Transparent Gateway）。
目前ORACLE利用透明网关可以实现和SQL SERVER、SYBASE、DB2等多种主流数据库的互联。通过oracle访问sybase数据库，把配置oracle9i TRANSPARENT GATEWAY FOR SYBASE
的步骤写成文档，供需要的网友参考！
配置TRANSPARENT GATEWAY FOR SYBASE步骤1.
oracle所在服务器上安装sybase client（或者在同一台server上安装oracle、sybase服务器）
确保能够访问sybase数据库2.
安装TRANSPARENT GATEWAY FOR SYBASE选件，要用自定义安装。
正确选择sybase的安装目录3.
选择一个sid字符串准备赋给sybase数据库。如：tg4sybs
设置SYBASE的dll路径到环境变量PATH（这一步很重要）4.
修改初始化文件，默认的是：
ORACLE_HOME\tg4sybs\admin\inittg4sybs.ora
设置参数
HS_FDS_CONNECT_INFO
格式：HS_FDS_CONNECT_INFO= server_name. database_name[,INTERFACE= interface_file]
server_name. database_name是大小写敏感的。
INTERFACE可选例子：如下
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
# This is a sample agent init file that contains the HS parameters that are
# needed for the Transparent Gateway for Sybase#
# HS init parameters
#
HS_FDS_CONNECT_INFO=migration_serv.tax
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER#
# Environment variables required for Sybase
#
set SYBASE=d:\sybase
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
上例中
server_name是migration_serv
database_name是tax5.
配置oracle网络服务的listener,配置文件是：listener.ora
默认路径：ORACLE_HOME\network\admin
加入如下SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(SID_NAME= gateway_sid)
(ORACLE_HOME= oracle_home_directory)
(PROGRAM=tg4sybs)
)
)gateway_sid就是3选择的sid字符串
oracle_home_directory是ORACLE_HOME
tg4sybs若是SYBASE是特定的。如果是其他数据库，会不同。
例子如下：
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
(SID_DESC=
(SID_NAME=tg4sybs)
(ORACLE_HOME = D:\oracle\ora92)
(PROGRAM=tg4sybs)
)
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$6.
停止监听lsnrctl stop
重新启动监听程序lsnrctl start7.
配置oracle server的tnsnames.ora使其能够访问sybase
connect_descriptor=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST= host_name)
(PORT= port_number)
)
(CONNECT_DATA=
(SID= gateway_sid))
(HS=OK))connect_descriptor是连接串，任取，一般为sybs
host_name：oracle server的name
port_number：oracle监听端口
gateway_sid就是3选择的sid字符串例子如下：
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
sybs=
(DESCRIPTION=
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL=TCP)(HOST= dw-server1)(PORT= 1521))
)
(CONNECT_DATA=
(SID= tg4sybs)
)
(HS=OK)
)$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$8.建立database link如：
CREATE DATABASE LINK sybs CONNECT TO sa
IDENTIFIED BY prient
USING 'SBYS' ；
即可访问sybase 数据库。
需要注意的是，sybase数据库的表名，字段名，如果是小写的，那么在oracle里访问的时候要加上双引号""如：
SQL〉select "a" from "b"@sybs;
目前ORACLE利用透明网关可以实现和SQL SERVER、SYBASE、DB2等多种主流数据库的互联。通过oracle访问sybase数据库，把配置oracle9i TRANSPARENT GATEWAY FOR SYBASE
的步骤写成文档，供需要的网友参考！
配置TRANSPARENT GATEWAY FOR SYBASE步骤1.
oracle所在服务器上安装sybase client（或者在同一台server上安装oracle、sybase服务器）
确保能够访问sybase数据库2.
安装TRANSPARENT GATEWAY FOR SYBASE选件，要用自定义安装。
正确选择sybase的安装目录3.
选择一个sid字符串准备赋给sybase数据库。如：tg4sybs
设置SYBASE的dll路径到环境变量PATH（这一步很重要）4.
修改初始化文件，默认的是：
ORACLE_HOME\tg4sybs\admin\inittg4sybs.ora
设置参数
HS_FDS_CONNECT_INFO
格式：HS_FDS_CONNECT_INFO= server_name. database_name[,INTERFACE= interface_file]
server_name. database_name是大小写敏感的。
INTERFACE可选例子：如下
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
# This is a sample agent init file that contains the HS parameters that are
# needed for the Transparent Gateway for Sybase#
# HS init parameters
#
HS_FDS_CONNECT_INFO=migration_serv.tax
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER#
# Environment variables required for Sybase
#
set SYBASE=d:\sybase
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
上例中
server_name是migration_serv
database_name是tax5.
配置oracle网络服务的listener,配置文件是：listener.ora
默认路径：ORACLE_HOME\network\admin
加入如下SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(SID_NAME= gateway_sid)
(ORACLE_HOME= oracle_home_directory)
(PROGRAM=tg4sybs)
)
)gateway_sid就是3选择的sid字符串
oracle_home_directory是ORACLE_HOME
tg4sybs若是SYBASE是特定的。如果是其他数据库，会不同。
例子如下：
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
(SID_DESC=
(SID_NAME=tg4sybs)
(ORACLE_HOME = D:\oracle\ora92)
(PROGRAM=tg4sybs)
)
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$6.
停止监听lsnrctl stop
重新启动监听程序lsnrctl start7.
配置oracle server的tnsnames.ora使其能够访问sybase
connect_descriptor=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST= host_name)
(PORT= port_number)
)
(CONNECT_DATA=
(SID= gateway_sid))
(HS=OK))connect_descriptor是连接串，任取，一般为sybs
host_name：oracle server的name
port_number：oracle监听端口
gateway_sid就是3选择的sid字符串例子如下：
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
sybs=
(DESCRIPTION=
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL=TCP)(HOST= dw-server1)(PORT= 1521))
)
(CONNECT_DATA=
(SID= tg4sybs)
)
(HS=OK)
)$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$8.建立database link如：
CREATE DATABASE LINK sybs CONNECT TO sa
IDENTIFIED BY prient
USING 'SBYS' ；
即可访问sybase 数据库。
需要注意的是，sybase数据库的表名，字段名，如果是小写的，那么在oracle里访问的时候要加上双引号""如：
SQL〉select "a" from "b"@sybs;
本文的测试环境为:操作系统: WINDOWS2000 SERVER (繁体系统)安装数据库: SYBASE8.0 SERVER(英文版)和ORACLE92客户端(英文版)具体实现步骤:
1.要求pc机上安装ORACLE客户端软件和SYBASE8.0 SERVER软件。
2.首先ORACLE要建立好SERVICE NAME 如:# TNSNAMES.ORA Network Configuration File: D:\oracle\ora92\network\admin\tnsnames.ora# Generated by Oracle configuration tools.
……TEST= (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST =10.100.1.101)(PORT = 1521)) ) (CONNECT_DATA = (SID = test) ) )……3.配置windows的ODBC数据源：
开始菜单—》程式集—》系统管理工具—》资料数据源（ODBC）—》进入配置用户DSN或者系统DSN均可以：添加—》选择ORACLE ORA92HOME—》自定义数据源名称（随意如: ORACLETEST）—》TNS SERVICE NAME名称（必选！）如上面的TEST—》USER ID处输入ORACLE的数据库的用户—》OK完成。配置和测试ODBC完成!
4.配置SYBASE8.0 SERVER 中的连接服务器：
启动SYBASE CENTRAL选择菜单中的TOOLS中的CONNECTION PROFILES选项选择NEW按钮出现画面NEW PROFILE, 在NAME处输入你的连接名称, 选择COPY PROFILE, 在CONNECTION PROFILE中选择ADAPTIVE SERVER ANYWHERE8.0 SAMPLE后OK, 出现EDIT CONNECTION PROFILE画面,USER: 处输入ORACLE的数据库的用户名称PASSWORD: 处输入ORACLE的数据库的用户的密码下面选择ODBC DATA SOURCE NAME处选择上面完成的ORACLE的ODBCORACLETEST, 选择OK即可完成!访问表时，使用格式为： [连接服务器名]..[ORACLE用户].[表名]。更详细具体的使用这里不再赘述。
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http://blog.csdn.net/ccbzzp/archive/2003/09/15/18245.aspx