查询Sqlserver数据库死锁的一个存储过程

 使用sqlserver作为数据库的应用系统,都避免不了有时候会产生死锁， 死锁出现以后，维护人员或者开发人员大多只会通过sp_who来查找死锁的进程，然后用sp_kill杀掉。利用sp_who_lock这个存储过程，可以很方便的知道哪个进程出现了死锁，出现死锁的问题在哪里.

创建sp_who_lock存储过程

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

出处: https://www.cnblogs.com/mzhanker/archive/2011/06/04/2072739.html