--创建或修改sp_who_lock存储过程CREATE procedure sp_who_lock--ALTER procedure sp_who_lockas     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