在三个实例 oracle 之间创建数据库 link

Question

如何在三个实例之间创建数据库link？ 例如，我有一个名为 orcl、orcl1、orcl2 的数据库，如何 link 它们？ 谢谢

Answer 1

以下SQL可能对您有所帮助:)

在数据库 ORCL:

CREATE DATABASE LINK db_link_orcl1
CONNECT TO orcl1_user_name IDENTIFIED BY orcl1_user_password 
USING 'localhost:1521/orcl1';

CREATE DATABASE LINK db_link_orcl2
CONNECT TO orcl2_user_name IDENTIFIED BY orcl2_user_password 
USING 'localhost:1521/orcl2';

在数据库 ORCL1:

CREATE DATABASE LINK db_link_orcl
CONNECT TO orcl_user_name IDENTIFIED BY orcl_user_password 
USING 'localhost:1521/orcl';

CREATE DATABASE LINK db_link_orc2
CONNECT TO orcl2_user_name IDENTIFIED BY orcl2_user_password 
USING 'localhost:1521/orcl2';

在数据库 ORCL2:

CREATE DATABASE LINK db_link_orcl
CONNECT TO orcl_user_name IDENTIFIED BY orcl_user_password 
USING 'localhost:1521/orcl';

CREATE DATABASE LINK db_link_orcl1
CONNECT TO orcl1_user_name IDENTIFIED BY orcl1_user_password 
USING 'localhost:1521/orcl1';