Oracle11G自动备份

 一、以exp命令备份

     1.首先做个批处理脚本:backup.bat  脚本内容如下

         @echo off
       set curdate=%date:~0,4%%date:~5,2%%date:~8,2%
       set backuppath=D:\backup
       md %backuppath%
       exp scott/[email protected]/orcl file=%backuppath%\%curdate%.dmp owner(scott)                                    log=%backuppath%\%curdate%.log 
       forfiles /p "D:\backup" /s /m *.dmp /d -30 /c "cmd /c del @file"

    说明：在备份之前先在D盘建个backup文件夹.

   2.以Windows中的计划任务程序来触发这个备份脚本（以Win7为例）

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完成配置，这个自动备份脚本会在每天10:43的时候执行，将数据备份到D:\backup文件夹下 格式为:20151212.dmp

2.导入dmp文件的命令

spool log.txt;
drop user scott cascade;
drop tablespace SCOTT including contents and datafiles;
create tablespace SCOTT logging  
datafile 'D:\orcl\SCOTT .dbf'
size 50m  
autoextend on  
next 50m maxsize 20480m  
extent management local; 
create user scott identified by tiger default tablespace SCOTT;
grant connect,resource to scott;
grant dba to scott;
spool off;
exit;

在dos窗口输入命名导入数据文件  imp scott/tiger@ORCL file=20151212.dmp full=Y

二、以expdp命名备份脚本如下

create directory mydmp as 'D:\backup'  --directory指定导出到本地目录


--授权给操作用户这个mydmp目录的权限
grant read, write on directory mydmp to scott--需要超级管理员的账号 sysdba


--查看一下是否存在该目录
select * from dba_directories;

执行脚本如下

@echo off
rem set backupfile=%date:~0,4%%date:~5,2%%date:~8,2%.dmp 
rem set logfile=%date:~0,4%%date:~5,2%%date:~8,2%.log
rem delete 30days filesforfiles /p "D:\backup" /d -30  /c "cmd /c 
echo deleting @file ... && del /f @path"cd D:\backup
rem backup schemas
set backupfile=%date:~0,4%%date:~5,2%%date:~8,2%.dmp
set logfile=%date:~0,4%%date:~5,2%%date:~8,2%.log
expdp scott/tiger directory=mydmp  dumpfile=%backupfile%  logfile=%logfile% schemas=scott parallel=4

用expdp导出的必须要用impdp命令导入

impdp scott/tiger DIRECTORY=mydmp  DUMPFILE=20151212.DMP SCHEMAS=SCOTT

后记：

用expdp也会把空表也导出，非常好用。

参考博客地址:http://blog.csdn.net/cunxiyuan108/article/details/8197972

http://www.cnblogs.com/luluping/archive/2010/03/16/1687093.html