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 @@er【文章出处:香港多ip服务器 复制请保留原URL】ror   
 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

直到最后的结果为：**

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