經過數據連接(Database Link),從Oracle 9i 鏈接 SQL Server 2000(實例)web
從Oracle 9i鏈接SQL Server2000,須要用透明網關(Transparent Gateway),經過它,咱們能夠 sqlplus 操縱其餘數據庫,如 ms sqlserver 、 sybase 、 infomix 等,實現數據庫的異構服務。sql
在Oracle 8i中沒有透明網關,9i自帶,可是默認不安裝。數據庫
(一)安裝Transparent Gateway for Windows SQL Server:服務器
*若是在Oracle主目錄下有tg4msql文件夾,那麼不須要從新安裝。oracle
1. 啓動Oracle安裝盤disk 5裏面的setup.exe。tcp
2. 按Next兩次,選擇Oracle 9i Database 9.2.0.1.0,按Next。ide
3. 選擇Custom,按Next。sqlserver
4. 按Oracle Transparent Gateway 9.2.0.1.0旁邊的"+",選擇Oracle Transparent Gateway for Microsoft SQL Server 9.2.0.1.0,按Next。測試
5. 接着安裝。ui
6. 安裝完畢以後,在Oracle主目錄下,會有tg4msql文件夾。
(二)配置:
個人環境:
Oracle 服務器:
OS: Windows XP (SP2)
IP: 192.168.1.180
PORT: 1521
SQL 服務器:
OS: Windows 2000
IP: 192.168.1.213
Database Server Name: BIO549
Database Name: salesdata1
(a)經過tg4msql鏈接:
1. 在Oracle主目錄下tg4msql\admin目錄下,拷貝inittg4msql.ora並更名爲init<SID>.ora。例如,我用的SID是MSSQL,那麼個人文件名是initMSSQL.ora。
2. 配置init<SID>.ora,以個人例子,以下:
******************************
# This is a sample agent init file that contains the HS parameters that are
# needed for the Transparent Gateway for SQL Server
#
# HS init parameters
#
HS_FDS_CONNECT_INFO="SERVER=BIO549;DATABASE=salesdata1"
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
******************************
3. 配置Oracle主目錄下network\admin目錄下的listener.ora。以個人例子,以下:
*NEWLISTENER是我新建的LISTENER的名字,默認應該是LISTENER
******************************
# LISTENER.ORA Network Configuration File: C:\oracle\ora92\network\admin\listener.ora
# Generated by Oracle configuration tools.
NEWLISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.180)(PORT = 1521))
)
)
)
SID_LIST_NEWLISTENER =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = C:\oracle\ora92)
(SID_NAME = MSSQL)
(PROGRAM = tg4msql)
)
)
******************************
4.配置Oracle主目錄下network\admin目錄下的tnsnames.ora,以個人例子,以下:
******************************
MSSQL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.180)(PORT = 1521))
(CONNECT_DA
(HS=MSSQL)
)
******************************
5. 重起listener。
6. 用sqlplus創建並測試Database Link。在命令行中,用如下命令:
sqlplus /nolog
conn sys/webpos as sysdba ---->用sysdba的身份登錄
alter system set global_names = true; ---->設置global_names=false不要求創建的數據庫連接和目的數據庫的全局名稱一致
create database link test1 connect to sa identified by sa using 'mssql';
select * from salesdata1@test1;
7.鏈接成功。其中,connect to後面是用戶名,identified by後面是密碼,using後面是SID。
(b)經過hsodbc鏈接:
1. 在ODBC中創建SQL Server鏈接的System DSN,我用名字BIO549。(步驟不詳述,請查MSDN)
2. 在Oracle主目錄下hs\admin的目錄下,拷貝inithsodbc.ora並更名爲init<SID>.ora。此次,我用的SID是BIO549,因此文件名是BIO549。以個人例子,以下:
*HS_FDS_CONNECT_INFO後面是數據源名稱。
******************************
# This is a sample agent init file that contains the HS parameters that are
# needed for an ODBC Agent.
#
# HS init parameters
#
HS_FDS_CONNECT_INFO = BIO549
HS_FDS_TRACE_LEVEL = OFF
#
# Environment variables required for the non-Oracle system
#
#set <envvar>=<value>
******************************
3. 配置listener.ora,此次加入下面一段:
******************************
(SID_DESC=
(ORACLE_HOME = C:\oracle\ora92)
(SID_NAME=BIO549)
(PROGRAM=hsodbc)
)
******************************
所以,個人listener.ora所有以下:
******************************
# LISTENER.ORA Network Configuration File: C:\oracle\ora92\network\admin\listener.ora
# Generated by Oracle configuration tools.
NEWLISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.180)(PORT = 1521))
)
)
)
SID_LIST_NEWLISTENER =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = C:\oracle\ora92)
(SID_NAME = MSSQL)
(PROGRAM = tg4msql)
)
(SID_DESC=
(ORACLE_HOME = C:\oracle\ora92)
(SID_NAME=BIO549)
(PROGRAM=hsodbc)
)
)
******************************
4. 配置tnsnames.ora,以下:
******************************
BIO549 =
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.180)(PORT=1521))
(CONNECT_DA
(HS=OK)
)
******************************
5. 重起listener並創建鏈接。
(三) 注意:
我在測試的時候,起先老是有ORA-28545的錯誤,經調查含義以下:
ORA-28545 error diagnosed by Net8 when connecting to an agent
Cause: An attempt to call an external procedure or to issue SQL to a non-Oracle system on a Heterogeneous Services database link failed at connection initialization. The error diagnosed by Net8 NCR software is reported separately.
Act
我仔細的查看了全部文件的配置,發現是因爲listener的名字致使的錯誤(SID_LIST_NEWLISTENER),所以我建議,若是出現這個錯誤,請仔細檢查全部的配置文件。
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