文章摘要
这篇文章描述了一个使用存储过程来检测和报告数据库进程死锁和阻塞的解决方案。通过创建临时表`#tmp_lock_who`记录被阻塞的进程信息，程序能够逐条分析这些记录并输出相关进程的详细信息。核心内容在于通过`sp_who_lock`存储过程，识别出引起死锁和阻塞的进程，并提示其对应的SQL语法，便于进一步排查和处理问题。该方法简洁高效，能够有效地监控和报告数据库中的进程状态。
USE [master]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE procedure [dbo].[sp_who_lock]
as
begin
declare @spid int, @bl int, @intTransactionCountOnEntry int, @intRowcount int, @intCountProperties int, @intCounter int
create table #tmp_lock_who (
id int identity(1,1),
spid smallint,
bl smallint
)
IF @@ERROR<>0 RETURN @@ERROR
insert into #tmp_lock_who(spid,bl) select 0 ,blocked
from (select * from sysprocesses where blocked>0 ) a
where not exists(select * from (select * from sysprocesses where blocked>0 ) b
where a.blocked=spid)
union select spid,blocked from sysprocesses where blocked>0
IF @@ERROR<>0 RETURN @@ERROR
— 找到临时表的记录数
select @intCountProperties=Count(*),@intCounter=1
from #tmp_lock_who
IF @@ERROR<>0 RETURN @@ERROR
if @intCountProperties=0
select ‘现在没有阻塞和死锁信息’ as message
— 循环开始
while @intCounter <=@intCountProperties
begin
— 取第一条记录
select @spid=spid,@bl=bl
from #tmp_lock_who where Id=@intCounter
begin
if @spid=0
select ‘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’
else
select ‘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 )
end
— 循环指针下移
set @intCounter=@intCounter + 1
end
drop table #tmp_lock_who
return 0
end