sql server 自动备份

[sql]代码库

/***********************************************************************************
* FielName : backup.sql
* Function : 自动备份
* Author : Yahong<Yahongq111@163.com>
* Date : 2005-5-10 2005-5-19 2006-8-1 2007-09-18
* Version : 00 01 02 03
*
* Remark :
* 2006-08-01 增加差异备份和完全备份两种情况,生成多个备份副本
* 2008-09-18 增加备份一个实例中的所有数据库的情况,并在备份后清除日志
*
*********************************************************************************/

use master

declare @DbName varchar(255),@dir varchar(256),@dir_db varchar(256),
@verb varchar(256),@cmd varchar(256),
@backup_name varchar(256),@dynamic_name varchar(10),
@disk_name varchar(256),@copy nvarchar(100),
@today datetime,@weekday int

--建立网络连接
exec xp_cmdshell 'net use K: /delete'
exec xp_cmdshell 'net use I: /delete'

exec xp_cmdshell 'net use K: \\193.254.40.118\backup backup /user:Web\backup '
exec xp_cmdshell 'net use I: \\172.16.8.48\databackup backup /user:QA-SERVER-TEST\backup'

--设定名字
set @today=getdate()
set @dynamic_name=convert(varchar(10),@today,120)

set @dir='K:\'+@dynamic_name
set @dir_db=@dir+'Database'
set @verb='mkdir '

--建立目录
set @cmd=@verb+@dir_db
exec xp_cmdshell @cmd


declare cur_database cursor forward_only read_only for
select name from sysdatabases
where dbid>4--系统数据库的dbid<=4

open cur_database

fetch next from cur_database
into @DbName

while @@fetch_status=0
begin
set @backup_name= @DbName+'_'+@dynamic_name
set @disk_name=@dir_db+'\'+@backup_name+'.bak'

 

--添加备份设备
EXEC sp_addumpdevice 'disk',@backup_name, @disk_name

 

set @weekday= datepart(dw,@today)
if (@weekday=6) --如果是周五,则进行完全备份
BACKUP DATABASE @DbName TO @backup_name
else--其他时候进行差异备份
BACKUP DATABASE @DbName TO @backup_namewith differential

 

--清理日志
backup log @DbName with no_log

 

--释放设备
exec sp_dropdevice @backup_name

 

--复制备份副本到其他地方
set @copy='copy '+@disk_name+' I:'
exec xp_cmdshell @copy

 

--备份下一个数据库
fetch next from cur_database
into @DbName
end
close cur_database
deallocate cur_database

 

--删除网络连接
exec xp_cmdshell 'net use K: /delete'
exec xp_cmdshell 'net use I: /delete'