教程：

http://blog.csdn.net/giianhui/article/details/7788550

SQL语句命令：

create or replace directory expdir as ‘D:\backup ‘;

grant read,write on directory expdir to public

select * from dba_directories

CMD命令：

expdp zbwlnew/111111@BKWL schemas=zbwlnew dumpfile=20170608.dmp
directory=expdir

ORACEL数据库导入导出命令 expdp/impdp