sqlserver数据库备份方法

须事先准备一个工具curl，把它放在c盘。然后，在数据库所在服务器安装7z。最后把这2个存储过程执行，在sqlserver的代理中新建作业，即可实现备份操作。

--备份指定数据库到本地和远程指定位置(-zip压缩)

Create PROCEDURE [dbo].[BackUpDB7z]
@dbname sysname --数据库名

AS

declare @backupfile nvarchar() --本地备份文件名
declare @backuplogfile nvarchar() --本地日志备份文件名
declare @archivefile nvarchar() --本地压缩文件名
declare @archivelogfile nvarchar() --本地压缩文件名
declare @target_localpath nvarchar() --本地备份路径
declare @target_backupfile nvarchar() --本地备份文件完整路径
declare @target_backuplogfile nvarchar() --本地备份日志文件完整路径

declare @target_archivefile nvarchar() --本地压缩文件完整路径
declare @target_archivelogfile nvarchar() --本地日志压缩文件完整路径

declare @descr nvarchar() --备份文件描述
declare @date datetime
declare @date_str varchar() --日期时间字符串

declare @cmd nvarchar() --要执行的命令
declare @log_file nvarchar() --

declare @cmd_7z nvarchar()
declare @7z_opt nvarchar()

declare @cmd_tool nvarchar()='C:\curl\curl -T'
declare @remotepath nvarchar()='' --远程备份路径
declare @ftp_user nvarchar()=''--ftp帐号
declare @ftp_pw nvarchar()=''--ftp密码
declare @ftp_opt nvarchar()='ftp://'

declare @localpath nvarchar()='' --本地备份路径

--参数设置
select @log_file='d:\shellcmd_log.txt'
select @cmd_7z='7z '
select @7z_opt='a -t7z -mx=9 -mmt=on'

select @date=getdate()
select @descr=@dbname+cast(year(@date) as nvarchar)+'年'+cast(month(@date) as nvarchar)+'月'+cast(day(@date) as nvarchar)+'日完全备份'
select @backupfile=@dbname+'.bak'
select @backuplogfile=@dbname+'.Log.bak'

select @date_str=convert(varchar(), @date, )
select @date_str=REPLACE(@date_str,'-','')
select @date_str=REPLACE(@date_str,' ','_')
select @date_str=REPLACE(@date_str,':','')

select @archivefile=@dbname+'_'+@date_str+'.7z'
select @archivelogfile=@dbname+'_'+@date_str+'.Log.7z'

if (@localpath<>'' and right(@localpath,)<>'\')
select @target_localpath=@localpath+'\'
else
select @target_localpath=@localpath

select @target_backupfile=@target_localpath+@backupfile
select @target_backuplogfile=@target_localpath+@backuplogfile
select @target_archivefile=@target_localpath+@archivefile
select @target_archivelogfile=@target_localpath+@archivelogfile

--收缩数据库
--dump transaction @dbname with no_log
--DBCC SHRINKDATABASE (@dbname, ,TRUNCATEONLY)

--备份数据库
backup database @dbname to disk=@target_backupfile with FORMAT , description=@descr
--备份日志
backup log @dbname to disk=@target_backuplogfile with FORMAT

exec [ClearDbLog] @dbname

--压缩数据库
select @cmd=@cmd_7z+' '+@7z_opt+' '+@target_archivefile+' ' +@target_backupfile
--执行命令
exec xp_cmdshell @cmd

--压缩日志
select @cmd=@cmd_7z+' '+@7z_opt+' '+@target_archivelogfile+' ' +@target_backuplogfile
--执行命令
exec xp_cmdshell @cmd

--传送压缩文件到远程服务器
if @remotepath<>''
begin
select @cmd=@cmd_tool+' '+@target_archivefile+' -u '+@ftp_user+':'+@ftp_pw+' '+@ftp_opt+''+@remotepath
--print(@cmd)
--执行命令
exec xp_cmdshell @cmd

select @cmd=@cmd_tool+' '+@target_archivelogfile+' -u '+@ftp_user+':'+@ftp_pw+' '+@ftp_opt+''+@remotepath
--print(@cmd)
--执行命令
exec xp_cmdshell @cmd
end

--删除本地备份bak文件
select @cmd='del '+@target_backupfile
--print(@cmd)
--执行命令
exec xp_cmdshell @cmd

select @cmd='del '+@target_backuplogfile
--print(@cmd)
--执行命令
exec xp_cmdshell @cmd

--删除本地备份7z文件
select @cmd='del '+@target_archivefile
--print(@cmd)
--执行命令
exec xp_cmdshell @cmd

select @cmd='del '+@target_archivelogfile
--print(@cmd)
--执行命令
exec xp_cmdshell @cmd

--清除数据库日志

CREATE PROCEDURE [dbo].[ClearDbLog]
@DataBase sysname
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    declare @sql2005 varchar(max)
    declare @sql2008 varchar(max)

    set @sql2005='
    DUMP TRANSACTION '+@DataBase+' WITH NO_LOG;
    DBCC SHRINKDATABASE ('+@DataBase+', ,TRUNCATEONLY);
    '

    set @sql2008='
    ALTER DATABASE '+@DataBase+' SET RECOVERY SIMPLE;
    DBCC SHRINKDATABASE ('+@DataBase+', ,TRUNCATEONLY);
    ALTER DATABASE '+@DataBase+' SET RECOVERY FULL;
    '
    --print(@sql);
    exec(@sql2008);
END

GO