sqlserver中怎么查询死锁源头

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查找出SQLServer的死锁和阻塞的源头 --查找出SQLServer死锁和阻塞的源头

代码如下: 

use masterGodeclare @spid int,@bl intDECLARE s_cur CURSOR FORselect 0 ,blockedfrom (select * from sysprocesses where blocked>0 ) awhere not exists(select * from (select * from sysprocesses where blocked>0 ) bwhere a.blocked=spid)uNIOn select spid,blocked from sysprocesses where blocked>0OPEN s_curFETCH NEXT FROM s_cur INTO @spid,@blWHILE @@FETCH_STATUS = 0beginif @spid =0select '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'elseselect '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,@blendCLOSE s_curDEALLOCATE s_cur

查看当前进程,或死锁进程,并能自动杀掉死进程 --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。

代码如下:

 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asdeclare @count int,@s nvarchar(1000),@i intselect 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_addressinto #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=0from master..sysprocesses a join (select blocked from master..sysprocesses group by blocked)b on a.spid=b.blocked where a.blocked=0union allselect '|_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=1from master..sysprocesses a where blocked<>0)a order by s1,s2

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

if @count=0 and @show_spid_if_nolock=1begininsert #tselect 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_addressfrom master..sysprocessesset @count=@@rowcountend

if @count>0begincreate table #t1(id int identity(1,1),a nvarchar(30),b Int,EventInfo nvarchar(255))if @kill_lock_spid=1begindeclare @spid varchar(10),@标志 varchar(10)while @i<=@countbeginselect @spid=进程ID,@标志=标志 from #t where id=@iinsert #t1 exec('dbcc inputbuffer('+@spid+')')if @标志='死锁的进程' exec('kill '+@spid)set @i=@i+1endendelsewhile @i<=@countbeginselect @s='dbcc inputbuffer('+cast(进程ID as varchar)+')'from #t where id=@iinsert #t1 exec(@s)set @i=@i+1endselect a.*,进程的SQL语句=b.EventInfofrom #t a join #t1 b on a.id=b.idendgo

exec p_lockinfo

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