SQL查看死锁+清理死锁

----查看sql死锁

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 '没有阻塞和死锁信息'
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 '引起数据库死锁的是: '+ CAST(@spid AS VARCHAR(10)) + '进程号,其执行的SQL语法如下'
   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 '引起阻塞的是:'+cast(@blk as varchar(10))+ '进程号,其执行的SQL语法如下'
   else
    select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@blk AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下'
   dbcc inputbuffer(@spid)
   dbcc inputbuffer(@blk)
   set @index=@index+1
end
end
drop table #temp_who_lock
return 0
end


GO

在查询分析器中执行:

exec sp_who_lock

----清理死锁

/*--处理死锁

查看当前进程,或死锁进程,并能自动杀掉死进程

因为是针对死的,所以如果有死锁进程,只能查看死锁进程
当然,你可以通过参数控制,不管有没有死锁,都只查看死锁进程

--邹建 2004.4--*/

/*--调用示例

exec p_lockinfo
--*/
create proc p_lockinfo
@kill_lock_spid bit=1, --是否杀掉死锁的进程,1 杀掉, 0 仅显示
@show_spid_if_nolock bit=1 --如果没有死锁的进程,是否显示正常进程信息,1 显示,0 不显示
as
declare @count int,@s nvarchar(1000),@i int
select id=identity(int,1,1),标志,
进程ID=spid,线程ID=kpid,块进程ID=blocked,数据库ID=dbid,
数据库名=db_name(dbid),用户ID=uid,用户名=loginame,累计CPU时间=cpu,
登陆时间=login_time,打开事务数=open_tran, 进程状态=status,
工作站名=hostname,应用程序名=program_name,工作站进程ID=hostprocess,
域名=nt_domain,网卡地址=net_address
into #t from(
select 标志='死锁的进程',
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 '|_牺牲品_>',
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 标志='正常的进程',
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),@标志 varchar(10)
while @i<=@count
begin
   select @spid=进程ID,@标志=标志 from #t where id=@i
   insert #t1 exec('dbcc inputbuffer('+@spid+')')
   if @标志='死锁的进程' exec('kill '+@spid)
   set @i=@i+1
end
end
else
while @i<=@count
begin
   select @s='dbcc inputbuffer('+cast(进程ID as varchar)+')' from #t where id=@i
   insert #t1 exec(@s)
   set @i=@i+1
end
select a.*,进程的SQL语句=b.EventInfo
from #t a join #t1 b on a.id=b.id
end
go

-存储过程

我们可以使用以下存储过程来检测，就可以查出引起死锁的进程和SQL语句。SQL Server自带的系统存储过程sp_who和sp_lock也可以用来查找阻塞和死锁, 但没有这里介绍的方法好用。

use master

create procedure sp_who_lock

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

-- 找到临时表的记录数

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

from #tmp_lock_who

IF @@ERROR<>0 RETURN @@ERROR

if @intCountProperties=0

select '现在没有阻塞和死锁信息' as message

-- 循环开始

while @intCounter <= @intCountProperties

begin

-- 取第一条记录

select @spid = spid,@bl = bl

from #tmp_lock_who where Id = @intCounter

begin

if @spid =0

select '引起数据库死锁的是: '+ CAST(@bl AS VARCHAR(10)) + '进程号,其执行的SQL语法如下'

else

select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@bl AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下'

DBCC INPUTBUFFER (@bl )

end

-- 循环指针下移

set @intCounter = @intCounter + 1

end

drop table #tmp_lock_who

return 0

end

杀死锁和进程

如何去手动的杀死进程和锁？最简单的办法，重新启动服务。但是这里要介绍一个存储过程，通过显式的调用，可以杀死进程和锁。

use master

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]

create proc p_killspid

@dbname varchar(200) --要关闭进程的数据库名

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

用法如下:

exec p_killspid 'newdbpy'

查看锁信息

如何查看系统中所有锁的详细信息？在企业管理管理器中，我们可以看到一些进程和锁的信息，这里介绍另外一种

--查看锁信息

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 进程id=a.req_spid

,数据库=db_name(rsc_dbid)

,类型=case rsc_type when 1 then 'NULL 资源（未使用）'

when 2 then '数据库'

when 3 then '文件'

when 4 then '索引'

when 5 then '表'

when 6 then '页'

when 7 then '键'

when 8 then '扩展盘区'

when 9 then 'RID（行 ID)'

when 10 then '应用程序'

end

,对象id=rsc_objid

,对象名=b.obj_name

,rsc_indid

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

drop table #t

select 0 spid ,'受阻于' 受阻于,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,'受阻于',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]
當你得到相關信息后確定可以kill的ID即可動手了，這個就很簡單了

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
-- 找到临时表的记录数
select @intCountProperties = Count(*),@intCounter = 1
from #tmp_lock_who
IF @@ERROR<>0 RETURN @@ERROR
if @intCountProperties=0
select '现在没有阻塞和死锁信息' as message
-- 循环开始
while @intCounter <= @intCountProperties
begin
-- 取第一条记录
select @spid = spid,@bl = bl
from #tmp_lock_who where Id = @intCounter
begin
if @spid =0
select '引起数据库死锁的是: '+ CAST(@bl AS VARCHAR(10)) + '进程号,其执行的SQL语法如下'
else
select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@bl AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下'
DBCC INPUTBUFFER (@bl )
end
-- 循环指针下移
set @intCounter = @intCounter + 1
end
drop table #tmp_lock_who
return 0

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SQL查看死锁+清理死锁

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