恢复所有数据库

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_RestoreDb]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[p_RestoreDb]
GO

/*--恢复指定目录下的所有数据库

    恢复的数据库名为备份文件名(不含扩展名)
    备份文件的扩展名固定为.bak

--邹建 2003.10(引用请保留此信息)--*/

/*--调用示例
--恢复指定目录下的所有数据库
exec p_RestoreDb @bkpath='c:/'

--恢复指定目录下的指定数据库
exec p_RestoreDb @bkpath='c:/',@bkfile='客户资料,xzkh_new'
--*/
create proc p_RestoreDb
@bkpath nvarchar(1000)='',     --定义备份文件的存放目录,默认为SQL的备份目录
@bkfile nvarchar(4000)='',    --定义要恢复的备份文件名,不含扩展名
@dbpath nvarchar(260)='',    --恢复后的数据库存放目录,不指定则为SQL的默认数据目录
@overexist bit=1,              --是否覆盖已经存在的数据库,仅@retype为'DB'/'DBNOR'是有效
@killuser bit=1                   --是否关闭用户使用进程,仅@overexist=1时有效
as
declare @sql varchar(8000),@dbname sysname

if isnull(@bkpath,'')=''
begin
    select @bkpath=rtrim(reverse(filename)) from master..sysfiles where name='master'
    select @bkpath=substring(@bkpath,charindex('/',@bkpath)+1,4000)
        ,@bkpath=reverse(substring(@bkpath,charindex('/',@bkpath),4000))+'BACKUP/'
end
else if right(@bkpath,1)<>'/' set @bkpath=@bkpath+'/'

--得到恢复后的数据库存放目录
if isnull(@dbpath,'')=''
begin
    select @dbpath=rtrim(reverse(filename)) from master..sysfiles where name='master'
    select @dbpath=reverse(substring(@dbpath,charindex('/',@dbpath),4000))
end
else if right(@dbpath,1)<>'/' set @dbpath=@dbpath+'/'

--得到指定目录下的所有备份文件
create table #t(fname varchar(260),depth int,isf bit)
insert into #t exec master..xp_dirtree @bkpath,1,1

if isnull(@bkfile,'')=''
    declare tb cursor local for select fn=left(fname,patindex('%.bak',fname)-1) from #t
        where isf=1 and fname like '%.bak'  --取.bak文件
else
begin
    set @bkfile=','+replace(@bkfile,',','.bak,')+'.bak,'
    declare tb cursor local for select fn=left(fname,patindex('%.bak',fname)-1) from #t
        where isf=1 and fname like '%.bak' and @bkfile like '%,'+fname+',%'
end

--恢复数据库处理
open tb
fetch next from tb into @dbname
while @@fetch_status=0
begin
    --生成数据库恢复语句
    set @sql='restore database ['+@dbname
        +'] from disk='''+@bkpath+@dbname+'.bak'''
        +' with RECOVERY'
        +case when @overexist=1 then ',replace' else '' end

    --添加移动逻辑文件的处理
    --从备份文件中获取逻辑文件名
    declare @lfn nvarchar(128),@tp char(1),@i int

    --创建临时表,保存获取的信息
    create table #tb(ln nvarchar(128),pn nvarchar(260),tp char(1),fgn nvarchar(128),sz numeric(20,0),Msz numeric(20,0))
    --从备份文件中获取信息
    insert into #tb exec('restore filelistonly from disk='''+@bkpath+@dbname+'.bak''')
    declare #f cursor local for select ln,tp from #tb order by tp
    open #f
    fetch next from #f into @lfn,@tp
    set @i=0
    while @@fetch_status=0
    begin
        select @sql=@sql+',move '''+@lfn+''' to '''+@dbpath+@dbname+cast(@i as varchar)
            +case @tp when 'D' then '.mdf''' else '.ldf''' end
            ,@i=@i+1
        fetch next from #f into @lfn,@tp
    end
    close #f
    deallocate #f
    drop table #tb

    --关闭用户进程处理
    if @overexist=1 and @killuser=1
    begin
        declare hCForEach cursor for
        select s='kill '+cast(spid as varchar) from master..sysprocesses 
        where dbid=db_id(@dbname)
        exec sp_msforeach_worker '?'
    end

    --恢复数据库
    exec(@sql)
    fetch next from tb into @dbname
end
close tb
deallocate tb
go