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。现在通过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
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设置参数
格式：
HS_FDS_CONNECT_INFO= server_name. database_name[,INTERFACE= interface_file]
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server_name. database_name是大小写敏感的。
INTERFACE可选
例子：如下
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
# This is a sample agent init file that contains the HS parameters that are
# needed for the Transparent Gateway for Sybase #
# HS init parameters
#
HS_FDS_CONNECT_INFO=migration_serv.tax
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER #
# Environment variables required for Sybase
#
set SYBASE=d:\sybase
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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上例中
server_name是migration_serv
database_name是tax
5.配置oracle网络服务的listener,配置文件是：listener.ora
默认路径：ORACLE_HOME\network\admin
加入如下：
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(SID_NAME= gateway_sid)
(ORACLE_HOME= oracle_home_directory)
(PROGRAM=tg4sybs)
)
)
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gateway_sid就是3选择的sid字符串
oracle_home_directory是ORACLE_HOME
tg4sybs若是SYBASE是特定的。如果是其他数据库，会不同。
例子如下：
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
(SID_DESC=
(SID_NAME=tg4sybs)
(ORACLE_HOME = D:\oracle\ora92)
(PROGRAM=tg4sybs)
)
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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