转自：

del D:\DataBak\database7.dmp

del D:\DataBak\database7.log

ren D:\DataBak\database6.dmp database7.dmp

ren D:\DataBak\database5.dmp database6.dmp

ren D:\DataBak\database4.dmp database5.dmp

ren D:\DataBak\database3.dmp database4.dmp

ren D:\DataBak\database2.dmp database3.dmp

ren D:\DataBak\database.dmp database2.dmp

ren D:\DataBak\database6.log database7.log

ren D:\DataBak\database5.log database6.log

ren D:\DataBak\database4.log database5.log

ren D:\DataBak\database3.log database4.log

ren D:\DataBak\database2.log database3.log

ren D:\DataBak\database.log database2.log

exp as sysdba' file=D:\DataBak\database.dmp owner=(dict,up,busi,admin) log=D:\DataBak\database.log

pause;