1. 建立 DATABASE LINK

CREATE PUBLIC DATABASE LINK ABC

CONNECT TO SA IDENTIFIED BY PASSWord

USING '(DESCRipTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.0.100)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = AAA)))';

2.測試

select * from test@ABC

3.請注意使用 DBLINK 時，INIT.ORA中 GLOBAL_NAME 的設置:

如果為 ture , 請使用DBLINK的全稱，可在 all_db_links 中查到，如果為 FALSE， 不必使用全稱，當出現

“ORA-02019：為找到遠程數據庫的連接說明”時，請使用全稱，如：

select * from test@ABC.US.Oracle.COM

4.SQL> select * from global_name;

GLOBAL_NAME
----------------------------------------------------------
LOCALSR

5. update global_name set GLOBAL_NAME = 'LOCALSR.US.ORACLE.COM' where GLOBAL_NAME = 'LOCALSR'

6.重啟例程>>ok

SQL> desc global_name;

Name Type Nullable Default Comments
----------- -------------- -------- ------- ---------------
GLOBAL_NAME VARCHAR2(4000) Y global database name