1 . 使用数据库中,可能出现死锁, 导致程序 无法正常使用.
create procedure [dbo].[sp_who_lock]
(
@bkillpid bit=0 — 0: 查询 1: 结束掉相对应的死锁id (可能导致数据异常)
)
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
declare @sbak varchar(10)
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)
if @bkillpid =1
begin
set @sbak=cast(@blk as varchar(10))
exec(‘kill ‘+@sbak)
set @sbak=cast(@spid as varchar(10))
exec(‘kill ‘+@sbak)
end
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