本地数据库分别访问服务器上的两个数据库,对两个数据库的数据分别进行比较。
create database link 随便起个名字
connect to 用户名 identified by 密码
using ‘(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 域名)(PORT = 端口号))
)
(CONNECT_DATA =
(SERVICE_NAME = 数据库实例名称)
)
)’;
将A库和B库两个库之间的数据表进行关联进行对比,
create database link zlhis connect to zlhis identified by his using '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = IP)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = zlhis) ) )';
select * from 病案主页@zlhis