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.
CREATE procedure sp_who_lock
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 '沒有阻塞和死鎖信息'
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, @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))+ '進程號,其執行的SQL語法如下'
else
select '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+1
end
end
drop table #temp_who_lock
return 0
end
GO
