Oracle DBLink(透明网关)

Oracle DB Link 用过的两种(Gateways/Gateway for ODBC)

Oracle透明网关下载地址: http://download.oracle.com/ot...

Oracle官方文档：http://docs.oracle.com/cd/E11...

Oracle11g 连接多个 sqlserver

参照官方文档

1.配置tg_1 initdg4msql.ora
如果连接多个Sqlserver需要配置多个initdg4msql.ora文件

[sql] view plaincopy

D:appAdministratorproduct11.2.0tg_1dg4msqladmin
copy initdg4msql.ora initdg4msql1.ora
copy initdg4msql.ora initdg4msql2.ora

Change the value of the HS_FDS_CONNECT_INFO parameter in the new files.

For initdg4msql1.ora, enter the following:

HS_FDS_CONNECT_INFO=192.168.1.225//DB1
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
For initdg4msql2.ora, enter the following:

HS_FDS_CONNECT_INFO=192.168.1.225//DB2
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER

2.配置tg_1 LISTENER

D:appAdministratorproduct11.2.0tg_1NETWORKADMIN
listener.ora

[sql] view plaincopy
SID_LIST_LISTENER =
(SID_LIST =

 (SID_DESC =   
   (SID_NAME = dg4msql1)        
   (ORACLE_HOME = D:\app\Administrator\product\11.2.0\tg_1)  
   (PROGRAM = dg4msql)     
 )   
 (SID_DESC =   
   (SID_NAME = dg4msql2)        
   (ORACLE_HOME = D:\app\Administrator\product\11.2.0\tg_1)  
   (PROGRAM = dg4msql)     
 )   

)

LISTENER =
(DESCRIPTION_LIST =

(DESCRIPTION =  
  (ADDRESS = (PROTOCOL = TCP)(HOST = digiocto)(PORT = 1522))  
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))  
)  

)

ADR_BASE_LISTENER = D:appAdministratorproduct11.2.0tg_1
3.配置tg_1 tnsnames.ora

[sql] view plaincopy
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))

dg4msql1 =
(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))  
(CONNECT_DATA =(SID = dg4msql1))  
(HS=OK)  

)

dg4msql2 =
(DESCRIPTION=

(ADDRESS = (PROTOCOL = tcp)(HOST = localhost)(PORT = 1522))  
(CONNECT_DATA=(SID = dg4msql2))  
(HS=OK)  

)
4.增加dbhome_1 tnsnames.ora

[sql] view plaincopy
dg4msql1 =
(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))  
(CONNECT_DATA =(SID = dg4msql1))  
(HS=OK)  

)

dg4msql2 =
(DESCRIPTION=

(ADDRESS = (PROTOCOL = tcp)(HOST = localhost)(PORT = 1522))  
(CONNECT_DATA=(SID = dg4msql2))  
(HS=OK)  

)
5.Restart dbhome1 、tg_1 的LISTENER

6.Create DB Link

[sql] view plaincopy
CREATE PUBLIC DATABASE LINK MSQL1
CONNECT TO "sa"
IDENTIFIED BY "passwd1"
USING 'dg4msql1';
[sql] view plaincopy
CREATE PUBLIC DATABASE LINK MSQL2
CONNECT TO "sa"
IDENTIFIED BY "passwd2"
USING 'dg4msql2';
7.TEST Connection

[sql] view plaincopy
SQL> SELECT * FROM ALL_USERS@MSQL1;
SQL> SELECT * FROM ALL_USERS@MSQL2;