SQL2005 还原备份数据

一，读取备份文件

SQL:

Restore filelistonly from disk=’’ 读取差异和完整备份文件

Restore headeronly from disk=’’ 读取日志备份文件

SQL Litespeed：

Master..xp_restore_filelistonly @Filename=’’读取差异和完整备份文件

Master.. xp_restore_headeronly @Filename=’’ 读取日志备份文件

 

如果结果没有返回错误，基本上备份文件就是正确的。

 

 

注释：我们DB现在差异和完整备份一般都是用SQL Litespeed，日志备份用SQL.

例如：

Master..xp_restore_filelistonly @Filename='D:\PALBackUp\PAL_COMPSN_P80_DIFF20071008.BAK'----读取差异和完整备份文件

Restore headeronly from disk='D:\PALBackUp\PAL_COMPSN_P80_LOG20071008.TRN' ---读取日志备份文件

 

二、指定访问路径权限

Exec master..xp_cmdshell 'net use \\172.26.40.6\d$ PWD /user:fp-qsmc\administrator'

 

三、断开当前对DB PAL的操作

Declare @SQLStr nchar(100)

Declare @myspid smallint

Declare @mycursor cursor

Declare whocursor  cursor for

Select spid from master..sysprocesses where dbid=db_id('PAL')

Set @mycursor=whocursor

Open @mycursor

Fetch next from @mycursor into @myspid

While @@fetch_status=0

Begin

--select @myspid

Set @SQLStr='kill '+cast(@myspid as char(3))

Execute sp_executesql @SQLStr

Fetch next from @mycursor into @myspid

End

Close @mycursor

Deallocate whocursor

 

四、还原Full完整备份

Declare @FullFileName Varchar(200)

Set @FullFileName='\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_FULL20080914.BAK'

EXEC master.dbo.xp_restore_database  

@database='PAL',@Filename=@FullFileName,

@with='Move "PAL_COMPSN_P80_Data" to "D:\PALFA\DataBase\PAL\PAL.MDF"',

@with='Move "PAL_COMPSN_P80_Log" to "D:\PALFA\DataBase\PAL\PAL.LDF"',

@with='standby="D:\PALFA\DataBase\PAL\UNDO_PAL.DAT"'

 

 

执行完后就会在DB中出现一个备份/只读的PAL数据库。如果之前DB中存在一个可读写的PAL数据库，只需要更改语句为：

Declare @FullFileName Varchar(200)

Set @FullFileName='\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_FULL20080914.BAK'

EXEC master.dbo.xp_restore_database  

@database='PAL',@Filename=@FullFileName,

@with='Move "PAL_Data" to "D:\PALFA\DataBase\PAL\PAL.MDF"',

@with='Move "PAL_Log" to " D:\PALFA\DataBase\PAL\PAL.LDF"',

@with='standby="D:\PALFA\DataBase\PAL\UNDO_PAL.DAT"',

@with='replace'

只是在结尾添加 ,@with='replace'这一句。

 

五、还原Diff差异备份

Declare @FullFileName Varchar(200)

Set @FullFileName='\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_DIFF20080919.BAK'

EXEC master.dbo.xp_restore_database  

@database='PAL',@Filename=@FullFileName,

@with='Move "PAL_COMPSN_P80_Data" to "D:\PALFA\DataBase\PAL\PAL.MDF"',

@with='Move "PAL_COMPSN_P80_Log" to "D:\PALFA\DataBase\PAL\PAL.LDF"',

@with='standby="D:\PALFA\DataBase\PAL\UNDO_PAL.DAT"'

---@with='recovery'

 

@with='standby="D:\PALFA\DataBase\PAL\UNDO_PAL.DAT"'

替换为@with='recovery'代表还原后数据库可读写

 

六、还原Log日志备份

1)Litespeed还原Log

Declare @FileNum int

SET @FileNum=5

Declare @FullFileName Varchar(200)

Set @FullFileName= '\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_LOG20080918.TRN'

While @FileNum<=17

BEGIN 

    EXEC master.dbo.xp_restore_log  

@database='PAL',@Filename=@FullFileName,

          @filenumber=@FileNum,

          @with='standby=" D:\PALFA\DataBase\PAL\UNDO_PAL.DAT"'       

    SET @FileNum=@FileNum+1 

END

 

2)SQL还原Log

Declare @i int

Set @i=5

while @i<18

Begin

    Restore log PAL from disk='\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_LOG20080918.TRN' 

with STANDBY='D:\PALFA\DataBase\PAL\UNDO_PAL.DAT',file=@i

    Set @i=@i+1

End

 

最后一个LOG

Restore log PAL from disk='\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_LOG20080918.TRN '

with recovery,file=18  ---最大的POSITION

这样还原后数据库可读写

 

七、Litespeed Point还原

现在要求还原到2008-09-17 16：45：00：000 ，那么首先应该还原日志到FileNum 为17，然后用这个17号FileNum 做Point还原

 

Declare @FileNum int

SET @FileNum=18

Declare @FullFileName Varchar(200)

Set @FullFileName= '\\172.26.40.6\d$\PALBackUp\PAL_COMPSN_P80_LOG20080917.TRN'

EXEC master.dbo.xp_restore_log

    @database='PAL_LORI',@Filename=@FullFileName,@WITH='RECOVERY',

    @filenumber=@FileNum,

    @with='STOPAT="2008-09-17 16:30:00.000"'

 

八,映射账户

在PAL db执行下面语句后就可以把之前UID为qmsuser和sdsuser赋之前相对应的权限。

sp_change_users_login 'Update_One','qmsuser','qmsuser'

sp_change_users_login 'Update_One','sdsuser','sdsuser'