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
直到最后的结果为：
（转自此处）查询Sqlserver数据库死锁的一个存储过程