使用sqlserver作為數據庫的應用系統,都避免不了有時候會產生死鎖， 死鎖出現以后，維護人員或者開發人員大多只會通過sp_who來查找死鎖的進程，然后用sp_kill殺掉。利用sp_who_lock這個存儲過程，可以很方便的知道哪個進程出現了死鎖，出現死鎖的問題在哪里.

創建sp_who_lock存儲過程

CREATE procedure sp_who_lock asbegindeclare @spid intdeclare @blk intdeclare @count intdeclare @index intdeclare @lock tinyintset @lock=0create table #temp_who_lock(id int identity(1,1),spid int,blk int)if @@error<>0 return @@errorinsert into #temp_who_lock(spid,blk)select 0 ,blockedfrom (select * from master..sysprocesses where blocked>0)awhere not exists(select * from master..sysprocesses where a.blocked =spid and blocked>0)union select spid,blocked from master..sysprocesses where blocked>0if @@error<>0 return @@errorselect @count=count(*),@index=1 from #temp_who_lockif @@error<>0 return @@errorif @count=0beginselect '沒有阻塞和死鎖信息'return 0endwhile @index<=@countbeginif 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))beginset @lock=1select @spid=spid,@blk=blk from #temp_who_lock where id=@indexselect '引起數據庫死鎖的是: '+ CAST(@spid AS VARCHAR(10)) + '進程號,其執行的SQL語法如下'select @spid, @blkdbcc inputbuffer(@spid)dbcc inputbuffer(@blk)endset @index=@index+1endif @lock=0beginset @index=1while @index<=@countbeginselect @spid=spid,@blk=blk from #temp_who_lock where id=@indexif @spid=0select '引起阻塞的是:'+cast(@blk as varchar(10))+ '進程號,其執行的SQL語法如下'elseselect '進程號SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '進程號SPID：'+ CAST(@blk AS VARCHAR(10)) +'阻塞,其當前進程執行的SQL語法如下'dbcc inputbuffer(@spid)dbcc inputbuffer(@blk)set @index=@index+1endenddrop table #temp_who_lockreturn 0end GO

在查詢分析器中執行:

exec sp_who_lock

直到最后的結果為：**