MSSQL查找进程造成死锁_把这个进程杀掉

MSSQL(查找死锁)：

use master
go
declare @spid int,@bl int
DECLARE s_cur CURSOR FOR
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
OPEN s_cur
FETCH NEXT FROM s_cur INTO @spid,@bl
WHILE @@FETCH_STATUS = 0
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 )
FETCH NEXT FROM s_cur INTO @spid,@bl
end
CLOSE s_cur
DEALLOCATE s_cur

--邹建的
create proc sp_lockinfo
@kill_lock_spid bit=1, --是否杀掉阻塞的进程,1 杀掉, 0 仅显示
@show_spid_if_nolock bit=1, --如果没有阻塞的进程,是否显示正常进程信息,1 显示,0 不显示
@dbname sysname='' --如果为空,则查询所有的库,如果为null,则查询当前库,否则查询指定库
as
set nocount on
declare @count int,@s nvarchar(2000),@dbid int
if @dbname='' set @dbid=db_id() else set @dbid=db_id(@dbname)

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='阻塞的进程',
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
where blocked>0
and(@dbid is null or dbid=@dbid)
group by blocked
)b on a.spid=b.blocked
where a.blocked=0
and(@dbid is null or dbid=@dbid)
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=spid
from master..sysprocesses a
where blocked<>0
and(@dbid is null or dbid=@dbid)
)a order by s1,s2

select @count=@@rowcount

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
where @dbid is null or dbid=@dbid
order by spid
set @count=@@rowcount
end

if @count>0
begin
create table #t1(id int identity(1,1),a nvarchar(30),b Int,EventInfo nvarchar(255))
declare tb cursor local
for
select N'insert #t1 exec(''dbcc inputbuffer('+rtrim(进程ID)+')'')
if @@rowcount=0 insert #t1(a) values(null)
'+case when @kill_lock_spid=1 and 标志=N'阻塞的进程'
then 'kill '+rtrim(进程ID) else '' end
from #t
open tb
fetch tb into @s
while @@fetch_status=0
begin
exec(@s)
fetch tb into @s
end
close tb
deallocate tb
select a.*,进程的SQL语句=b.EventInfo
from #t a join #t1 b on a.id=b.id
order by a.ID
end
set nocount off
go

-----------------------------------------------------------------------

修改一下:

SQL Server数据库发生死锁时不会像ORACLE那样自动生成一个跟踪文件。有时可以在[管理]->[当前活动] 里看到阻塞信息(有时SQL Server企业管理器会因为锁太多而没有响应).

　　设定跟踪1204:

USE MASTER
DBCC TRACEON (1204,-1)

　　显示当前启用的所有跟踪标记的状态:

DBCC TRACESTATUS(-1)

　　取消跟踪1204:

DBCC TRACEOFF (1204,-1)

　　在设定跟踪1204后,会在数据库的日志文件里显示SQL Server数据库死锁时一些信息。但那些信息很难看懂,需要对照SQL Server联机丛书仔细来看。根据PAG锁要找到相关数据库表的方法:

DBCC TRACEON (3604)
DBCC PAGE (db_id,file_id,page_no)
DBCC TRACEOFF (3604)

　　请参考sqlservercentral.com上更详细的讲解.但又从CSDN学到了一个找到死锁原因的方法。我稍加修改, 去掉了游标操作并增加了一些提示信息,写了一个系统存储过程sp_who_lock.sql。代码如下：

if exists (select * from dbo.sysobjects
where id = object_id(N'[dbo].[sp_who_lock]')
and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[sp_who_lock]
GO
/********************************************************
// 学习到并改写
// 说明 : 查看数据库里阻塞和死锁情况
********************************************************/
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
end

　　需要的时候直接调用:

sp_who_lock

　　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。如果想知道其它tracenum参数的含义,请看http://www.sqlservercentral.com/文章

　　我们还可以设置锁的超时时间(单位是毫秒), 来缩短死锁可能影响的时间范围:

　　例如:

use master
seelct @@lock_timeout
set lock_timeout 900000
-- 15分钟
seelct @@lock_timeout