SQLSERVER view blocking and deadlock the process and execution of sentence

Before looking at the blocking and deadlock the process to understand a little knowledge

sp_who

You can also specify a login name to view some of the information (process ID, host name, database, etc.)

sp_who on

sp_who2
can also specify a specific number to view the process, such as viewing some cases 161 process ID (login name, database, CPU time, disk number, etc. IO)
sp_who2 161

The results are as follows:

SPID    Status    Login    HostName    BlkBy    DBName    Command    CPUTime    DiskIO    LastBatch    ProgramName    SPID    REQUESTID
161      sleeping                          starishop    TONY     .    TEST    AWAITING COMMAND    2189    65    12/03 9:47:56:    issLabelPrint    161      0    

SELECT @@ CONNECTIONS - Check the number of database connections since the last launch of
SELECT @@ MAX_CONNECTIONS - View database maximum number of connections

SELECT * FROM master..sysprocesses WHERE dbid IN (SELECT dbid FROM master..sysdatabases WHERE name = 'TEST') - See TEST database connection process conditions

 sp_who_lock stored procedures, stored display blocking, deadlock situation:

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 '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   

end process

kill spid