oracle 跨库操作 @link

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平时在两个IP地址相同的oracle库中操作数据时,是可以如下操作:(直接数据库名.后跟表名访问)

select * from KDBS.Ka01

create database link link_test
connect to DB2 identified by DB2
using'(DESCRIPTION =
   (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.7.XX)(PORT = 1521))
                )(CONNECT_DATA =
                (SERVICE_NAME = orcl)
                )
                )';
                         
select * from tb@link_test ;
create table tbs as select * from tb@link_test ;
insert into tbs(t1,t3) select a.t1,a.t2 from tb@link_test a ;
insert into tb@link_test(t1,t2) values('33d','667h');
delete tb@link_test a where a.t1='32';

在数据库a中创建数据库b的@link;既可在a库中访问b库数据