Oracle创建directory
create or replace directory dump_dir as 'D:\dump\dir'
这样把目录d:\dump\dir设置成dump_dir代表的directory
2、查询有哪些directory
select * from dba_directories
3、赋权
grant read,write on directory dump_dir to user01
4、删除
drop directory dump_dir
Oracle创建dblink
create public database link link名称 connect to 用户名 identified by "密码" using 'orcl';