查询MS SQL Server数据库死锁的一个存储过程

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.

--创建或修改sp_who_lock存储过程

CREATE procedure sp_who_lock

--ALTER 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