查看死锁的SQL语句

use master 
go 
declare @spid int,@bl int 
DECLARE s_cur CURSOR FOR 
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 
OPEN s_cur 
FETCH NEXT FROM s_cur INTO @spid,@bl 
WHILE @@FETCH_STATUS = 0 
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 ) 
FETCH NEXT FROM s_cur INTO @spid,@bl 
end 
CLOSE s_cur 
DEALLOCATE s_cur 
 
exec sp_who2 

运行sp_who2 ,看blk by 栏， 如果这栏不是空白， 有一个数字， 这就是造成阻塞（blocking）的线程id. 然后运行DBCC Inputbuffer(线程id), 你就可以看见这个线程在干什么。

来源：http://club.techtarget.com.cn/showtopic-42012-1.aspx