关于死锁的两条过程

原创

xyz2008moment 2010-04-02 12:06:43 博主文章分类：数据库技术 ©著作权

文章标签 死锁 文章分类 数据库

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exec master.dbo.sp_who_lock --查看当前死锁进程
exec master.dbo.p_killspid ytsafety--杀掉引起死锁的进程
sp_who_lock如下：
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
create procedure 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
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
p_killspid 如下：
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
create proc p_killspid
@dbname varchar(200)    --要关闭进程的数据库名
as
    declare @sql nvarchar(500)
    declare @spid nvarchar(20)
    declare #tb cursor for
        select spid=cast(spid as varchar(20)) from master..sysprocesses where dbid=db_id(@dbname)
    open #tb
    fetch next from #tb into @spid
    while @@fetch_status=0
    begin
        exec('kill '+@spid)
        fetch next from #tb into @spid
    end
    close #tb
    deallocate #tb
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO