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.测试

select * from test@ABC

3.请注意使用 DBLINK 时，INIT.ORA中 GLOBAL_NAME 的设置:

如果为 ture , 请使用DBLINK的全称，可在 all_db_links 中查到，如果为 FALSE， 不必使用全称，当出现

“ORA-02019：为找到远程数据库的连接说明”时，请使用全称，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.重启例程>>ok

SQL> desc global_name;

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