create public database link xxLink connect to 用户名 identified by 密码 using '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.175)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME =orcl) ) )';
删除DBlink
drop public database link xxLink;
查看link是否生成
select * from DBA_DB_LINKS ;
查询结果如下:
查询方式有:
select * from 用户名.表名@DB_LINK名称 ;