ORACLE9i 的透明閘道器的配置 (轉)

ORACLE9i 的透明閘道器的配置 (轉)[@more@]

實現異種連線服務的技術叫做透明閘道器（Transparent Gateway）。
目前ORACLE利用透明閘道器可以實現和 SERVER、、2等多種主流資料庫的互聯。

筆者由於工作需要，透過oracle訪問sybase資料庫，把oracleTRANSPARENT GATEWAY FOR SYBASE
的步驟寫成文件，供需要的網友參考！
 
配置TRANSPARENT GATEWAY FOR SYBASE步驟

1.
oracle所在上sybase client（或者在同一臺server上安裝oracle、sybase伺服器）
確保能夠訪問sybase資料庫

2.
安裝TRANSPARENT GATEWAY FOR SYBASE選件，要用自定義安裝。
正確選擇sybase的安裝目錄

3.
選擇一個sid字串準備賦給sybase資料庫。如：tg4sybs
設定SYBASE的dll路徑到環境變數PATH（這一步很重要）

4.
修改初始化，預設的是：
ORACLE_HOME g4sybsadmininittg4sybs.ora
設定引數
HS_FDS_CONNECT_INFO
格式：HS_FDS_CONNECT_INFO= server_name. database_name[,INTERFACE= interface_file]
server_name. database_name是大小寫敏感的。
INTERFACE可選

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tax

5.
配置oracle服務的listener,配置檔案是：listener.ora
預設路徑：ORACLE_HOMEworkadmin
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選擇的sid字串
oracle_home_directory是ORACLE_HOME
tg4sybs若是SYBASE是特定的。如果是其他資料庫，會不同。
例子如下：
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  (SID_DESC=
  (SID_NAME=tg4sybs)
  (ORACLE_HOME = D:oracleora92)
  (PROGRAM=tg4sybs)
  )
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

6.
停止

lsnrctl stop

重新啟動監聽

lsnrctl start

7.
配置oracle server的tnsnames.ora使其能夠訪問sybase
connect_descriptor=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST= host_name)
(PORT= port_number)
)
(CONNECT_DATA=
(SID= gateway_sid))
(HS=OK))

connect_descriptor是連線串，任取，一般為sybs
host_name：oracle server的name
port_number：oracle監聽埠
gateway_sid就是3選擇的sid字串

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
  NTIFIED BY prient 
  USING 'SBYS' ；
 
即可訪問sybase 資料庫。

需要注意的是，sybase資料庫的表名，欄位名，如果是小寫的，那麼在oracle裡訪問的時候要加上雙引號""

如：
SQL〉 "a" from to:"b"@sybs'>"b"@sybs;