转载：https://blog.csdn.net/wenzhihui_2010/article/details/12099029
@echo 开始备份….
set instanse=orcl
set username=user
set password=password
set extname=rar
set year=%date:~0,4%
set month=%date:~5,2%
set day=%date:~8,2%
set mydate=%year%-%month%-%day%
set spath=e:\backup\
mkdir "%spath%"
set filename=e:\backup\%username%%mydate%
@echo %filename%
exp %username%/%password%@%instanse% file=%filename%.dmp owner=%username% log=%filename%.log
C:\WinRAR\rar.exe a %filename%.%extname% %filename%.dmp %filename%.log
del %filename%.dmp
del %filename%.log
@echo 备份完毕！
@echo 备份文件为：%filename%.%extname%
@echo 执行sql….
@echo off
echo OK!
把上面脚步写在批处理文件（bak_oracle.bat）文件中，就搞定了