SQL查看死鎖+清理死鎖

----查看sql死鎖

CREATE procedure sp_who_lock    
as      
begin      
   declare @spid int      
   declare @blk int      
   declare @count int      
   declare @index int      
   declare @lock tinyint       
   set @lock=0       
   create table #temp_who_lock       
 (       
  id int identity(1,1),       
  spid int,       
  blk int      
 )       
 if @@error<>0 return @@error       
 insert into #temp_who_lock(spid,blk)       
 select 0 ,blocked        
 from (select * from master..sysprocesses where blocked>0)a       
 where not exists(select * from  master..sysprocesses where a.blocked =spid and blocked>0)      
 union select spid,blocked from  master..sysprocesses where blocked>0       
 if @@error<>0 return @@error       
 select @count=count(*),@index=1 from #temp_who_lock       
 if @@error<>0 return @@error       
 if @count=0       
 begin      
  select '沒有阻塞和死鎖信息'      
  return 0       
 end      
 while @index<=@count       
 begin      
  if exists(select 1 from #temp_who_lock a where id>@index and exists(select 1 from #temp_who_lock where id<=@index and a.blk=spid))      
  begin      
   set @lock=1       
   select @spid=spid,@blk=blk from #temp_who_lock where id=@index      
   select '引發數據庫死鎖的是: '+ CAST(@spid AS VARCHAR(10)) + '進程號,其執行的SQL語法以下'      
   select  @spid, @blk     
   dbcc inputbuffer(@spid)       
   dbcc inputbuffer(@blk)       
  end      
  set @index=@index+1       
 end      
 if @lock=0        
 begin      
  set @index=1       
  while @index<=@count       
  begin      
   select @spid=spid,@blk=blk from #temp_who_lock where id=@index      
   if @spid=0       
    select '引發阻塞的是:'+cast(@blk as varchar(10))+ '進程號,其執行的SQL語法以下'      
   else       
    select '進程號SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '進程號SPID：'+ CAST(@blk AS VARCHAR(10)) +'阻塞,其當前進程執行的SQL語法以下'     
   dbcc inputbuffer(@spid)     
   dbcc inputbuffer(@blk)       
   set @index=@index+1       
  end      
 end      
 drop table #temp_who_lock       
 return 0       
end            
  
  
GO

在查詢分析器中執行:

exec sp_who_lock

 

 

 

----清理死鎖

 

/*--處理死鎖

 查看當前進程,或死鎖進程,並能自動殺掉死進程

 由於是針對死的,因此若是有死鎖進程,只能查看死鎖進程
 固然,你能夠經過參數控制,無論有沒有死鎖,都只查看死鎖進程

--鄒建 2004.4--*/

/*--調用示例

 exec p_lockinfo
--*/
create proc p_lockinfo
@kill_lock_spid bit=1,  --是否殺掉死鎖的進程,1 殺掉, 0 僅顯示
@show_spid_if_nolock bit=1 --若是沒有死鎖的進程,是否顯示正常進程信息,1 顯示,0 不顯示
as
declare @count int,@s nvarchar(1000),@i int
select id=identity(int,1,1),標誌,
 進程ID=spid,線程ID=kpid,塊進程ID=blocked,數據庫ID=dbid,
 數據庫名=db_name(dbid),用戶ID=uid,用戶名=loginame,累計CPU時間=cpu,
 登錄時間=login_time,打開事務數=open_tran, 進程狀態=status,
 工做站名=hostname,應用程序名=program_name,工做站進程ID=hostprocess,
 域名=nt_domain,網卡地址=net_address
into #t from(
 select 標誌='死鎖的進程',
  spid,kpid,a.blocked,dbid,uid,loginame,cpu,login_time,open_tran,
  status,hostname,program_name,hostprocess,nt_domain,net_address,
  s1=a.spid,s2=0
 from master..sysprocesses a join (
  select blocked from master..sysprocesses group by blocked
  )b on a.spid=b.blocked where a.blocked=0
 union all
 select '|_犧牲品_>',
  spid,kpid,blocked,dbid,uid,loginame,cpu,login_time,open_tran,
  status,hostname,program_name,hostprocess,nt_domain,net_address,
  s1=blocked,s2=1
 from master..sysprocesses a where blocked<>0
)a order by s1,s2

select @count=@@rowcount,@i=1

if @count=0 and @show_spid_if_nolock=1
begin
 insert #t
 select 標誌='正常的進程',
  spid,kpid,blocked,dbid,db_name(dbid),uid,loginame,cpu,login_time,
  open_tran,status,hostname,program_name,hostprocess,nt_domain,net_address
 from master..sysprocesses
 set @count=@@rowcount
end

if @count>0
begin
 create table #t1(id int identity(1,1),a nvarchar(30),b Int,EventInfo nvarchar(255))
 if @kill_lock_spid=1
 begin
  declare @spid varchar(10),@標誌 varchar(10)
  while @i<=@count
  begin
   select @spid=進程ID,@標誌=標誌 from #t where id=@i
   insert #t1 exec('dbcc inputbuffer('+@spid+')')
   if @標誌='死鎖的進程' exec('kill '+@spid)
   set @i=@i+1
  end
 end
 else
  while @i<=@count
  begin
   select @s='dbcc inputbuffer('+cast(進程ID as varchar)+')' from #t where id=@i
   insert #t1 exec(@s)
   set @i=@i+1
  end
 select a.*,進程的SQL語句=b.EventInfo
 from #t a join #t1 b on a.id=b.id
end
go

 

 

 

-存儲過程

咱們可使用如下存儲過程來檢測，就能夠查出引發死鎖的進程和SQL語句。SQL Server自帶的系統存儲過程sp_who和sp_lock也能夠用來查找阻塞和死鎖, 但沒有這裏介紹的方法好用。

 

use master

go

create procedure sp_who_lock

as

begin

declare @spid int,@bl int,

@intTransactionCountOnEntry int,

        @intRowcount    int,

        @intCountProperties   int,

        @intCounter    int

 

create table #tmp_lock_who (

id int identity(1,1),

spid smallint,

bl smallint)

 

IF @@ERROR<>0 RETURN @@ERROR

 

insert into #tmp_lock_who(spid,bl) select 0 ,blocked

   from (select * from sysprocesses where blocked>0 ) a 

   where not exists(select * from (select * from sysprocesses where blocked>0 ) b 

   where a.blocked=spid)

   union select spid,blocked from sysprocesses where blocked>0

 

IF @@ERROR<>0 RETURN @@ERROR 

 

-- 找到臨時表的記錄數

select @intCountProperties = Count(*),@intCounter = 1

from #tmp_lock_who

 

IF @@ERROR<>0 RETURN @@ERROR 

 

if @intCountProperties=0

select '如今沒有阻塞和死鎖信息' as message

 

-- 循環開始

while @intCounter <= @intCountProperties

begin

-- 取第一條記錄

select @spid = spid,@bl = bl

from #tmp_lock_who where Id = @intCounter 

begin

if @spid =0 

            select '引發數據庫死鎖的是: '+ CAST(@bl AS VARCHAR(10)) + '進程號,其執行的SQL語法以下'

else

            select '進程號SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '進程號SPID：'+ CAST(@bl AS VARCHAR(10)) +'阻塞,其當前進程執行的SQL語法以下'

DBCC INPUTBUFFER (@bl )

end 

 

-- 循環指針下移

set @intCounter = @intCounter + 1

end

 

drop table #tmp_lock_who

 

return 0

 

end

殺死鎖和進程

如何去手動的殺死進程和鎖？最簡單的辦法，從新啓動服務。可是這裏要介紹一個存儲過程，經過顯式的調用，能夠殺死進程和鎖。

use master

go

 

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

drop procedure [dbo].[p_killspid]

GO

 

create proc p_killspid

@dbname varchar(200)    --要關閉進程的數據庫名

as 

    declare @sql nvarchar(500) 

    declare @spid nvarchar(20)

 

    declare #tb cursor for

        select spid=cast(spid as varchar(20)) from master..sysprocesses where dbid=db_id(@dbname)

    open #tb

    fetch next from #tb into @spid

    while @@fetch_status=0

    begin 

        exec('kill '+@spid)

        fetch next from #tb into @spid

    end 

    close #tb

    deallocate #tb

 

go

用法以下:

 

exec p_killspid 'newdbpy'

查看鎖信息

如何查看系統中全部鎖的詳細信息？在企業管理管理器中，咱們能夠看到一些進程和鎖的信息，這裏介紹另一種

 

 

--查看鎖信息

create table #t(req_spid int,obj_name sysname)

 

declare @s nvarchar(4000)

    ,@rid int,@dbname sysname,@id int,@objname sysname

 

declare tb cursor for 

    select distinct req_spid,dbname=db_name(rsc_dbid),rsc_objid

    from master..syslockinfo where rsc_type in(4,5)

open tb

fetch next from tb into @rid,@dbname,@id

while @@fetch_status=0

begin

    set @s='select @objname=name from ['+@dbname+']..sysobjects where id=@id'

    exec sp_executesql @s,N'@objname sysname out,@id int',@objname out,@id

    insert into #t values(@rid,@objname)

    fetch next from tb into @rid,@dbname,@id

end

close tb

deallocate tb

 

select 進程id=a.req_spid

    ,數據庫=db_name(rsc_dbid)

    ,類型=case rsc_type when 1 then 'NULL 資源（未使用）'

        when 2 then '數據庫'

        when 3 then '文件'

        when 4 then '索引'

        when 5 then '表'

        when 6 then '頁'

        when 7 then '鍵'

        when 8 then '擴展盤區'

        when 9 then 'RID（行 ID)'

        when 10 then '應用程序'

    end

    ,對象id=rsc_objid

    ,對象名=b.obj_name

    ,rsc_indid

from master..syslockinfo a left join #t b on a.req_spid=b.req_spid

 

go

 

drop table #t

select 0 spid ,'受阻於' 受阻於,blocked from (select * fromsysprocesses where blocked>0 ) a 
   where not exists(select * from (select * from sysprocesses whereblocked>0 ) b 
   where a.blocked=spid)
union select spid,'受阻於',blocked from sysprocesses whereblocked>0
--DBCC INPUTBUFFER (76)    --查看進程ID執行內容

select Pid=a.req_spid,Db=db_name(rsc_dbid),Type=case rsc_type when 1then 'NULL'
        when 2 then 'DB' when 3 then 'File'when 4 then 'Indx' when 5 then 'Tabl' when 6 then 'Page'
        when 7 then 'Key' when 8 then'ExDiskArea' when 9 then 'RowID' when 10 then 'App' end,
   rsc_indid,Objid=rsc_objid,ObjName=(select name from['dbname']..sysobjects where id=a.rsc_objid)
from master..syslockinfo a        --查看進程較多信息 [dbname 替換成你要監控的db]
當你獲得相關信息後確定能夠kill的ID便可動手了，這個就很簡單了

 

1. use master
2.  
   go
3.  
   create procedure sp_who_lock
4.  
   as
5.  
   begin
6.  
   declare @spid int,@bl int,
7.  
   @intTransactionCountOnEntry int,
8.  
   @intRowcount int,
9.  
   @intCountProperties int,
10.  
    @intCounter int
11.  
     
12.  
    create table #tmp_lock_who (
13.  
    id int identity( 1, 1),
14.  
    spid smallint,
15.  
    bl smallint)
16.  
     
17.  
    IF @@ ERROR<> 0 RETURN @@ ERROR
18.  
     
19.  
    insert into #tmp_lock_who(spid,bl) select 0 ,blocked
20.  
    from ( select * from sysprocesses where blocked> 0 ) a
21.  
    where not exists( select * from ( select * from sysprocesses where blocked> 0 ) b
22.  
    where a.blocked=spid)
23.  
    union select spid,blocked from sysprocesses where blocked> 0
24.  
     
25.  
    IF @@ ERROR<> 0 RETURN @@ ERROR
26.  
     
27.  
    -- 找到臨時表的記錄數
28.  
    select @intCountProperties = Count(*),@intCounter = 1
29.  
    from #tmp_lock_who
30.  
     
31.  
    IF @@ ERROR<> 0 RETURN @@ ERROR
32.  
     
33.  
    if @intCountProperties= 0
34.  
    select '如今沒有阻塞和死鎖信息' as message
35.  
     
36.  
    -- 循環開始
37.  
    while @intCounter <= @intCountProperties
38.  
    begin
39.  
    -- 取第一條記錄
40.  
    select @spid = spid,@bl = bl
41.  
    from #tmp_lock_who where Id = @intCounter
42.  
    begin
43.  
    if @spid = 0
44.  
    select '引發數據庫死鎖的是: '+ CAST(@bl AS VARCHAR( 10)) + '進程號,其執行的SQL語法以下'
45.  
    else
46.  
    select '進程號SPID：'+ CAST(@spid AS VARCHAR( 10))+ '被' + '進程號SPID：'+ CAST(@bl AS VARCHAR( 10)) + '阻塞,其當前進程執行的SQL語法以下'
47.  
    DBCC INPUTBUFFER (@bl )
48.  
    end
49.  
     
50.  
    -- 循環指針下移
51.  
    set @intCounter = @intCounter + 1
52.  
    end
53.  
     
54.  
    drop table #tmp_lock_who
55.  
     
56.  
    return 0