[SQL]死锁检查

方案一:

===================

select 
request_session_id spid, 
OBJECT_NAME(resource_associated_entity_id) tableName 
from 
sys.dm_tran_locks 
where 
resource_type='OBJECT'


USE [master]
GO
SELECT  session_id,
blocking_session_id,
wait_time,
wait_type,
last_wait_type,
wait_resource,
transaction_isolation_level,
lock_timeout
FROM sys.dm_exec_requests
WHERE blocking_session_id <> 0
GO

 

方案二:

===================

--spid    smallint    SQL Server 进程 ID。
--ecid    smallint    用于唯一标识代表单个进程进行操作的子线程的执行上下文 ID。
--status nchar(30)    进程 ID 状态（如运行、休眠等）。
--Objid                对象ID号(要查看这个对象，你可以在主数据库中的sysobjects表格中查询指定的objid)
--Indid                索引ID号
--blk    char(5)        如果存在阻塞进程，则是该阻塞进程的系统进程 ID。否则该列为零。当与给定的 spid 相关联的事务受到孤立分布式事务的阻塞时，该列将对阻塞孤立事务返回 '-2'。

CREATE Table #Who(spid int,
    ecid int,
    status nvarchar(50),
    loginname nvarchar(50),
    hostname nvarchar(50),
    blk int,
    dbname nvarchar(50),
    cmd nvarchar(50),
    request_ID int);

CREATE Table #Lock(spid int,
    dbid int,
    objid int,
    indid int,
    [Type] nvarchar(20),
    Resource nvarchar(50),
    Mode nvarchar(10),
    Status nvarchar(10)
);

INSERT INTO #Who
    EXEC sp_who active  --看哪个引起的阻塞，blk 
INSERT INTO #Lock
    EXEC sp_lock  --看锁住了那个资源id，objid 

DECLARE @DBName nvarchar(20);
SET @DBName='CRM_Other'

SELECT #Who.* FROM #Who WHERE dbname=@DBName
SELECT #Lock.* FROM #Lock
    JOIN #Who
        ON #Who.spid=#Lock.spid
            AND dbname=@DBName;

--最后发送到SQL Server的语句
DECLARE crsr Cursor FOR
    SELECT blk FROM #Who WHERE dbname=@DBName AND blk<>0;
DECLARE @blk int;
open crsr;
FETCH NEXT FROM crsr INTO @blk;
WHILE (@@FETCH_STATUS = 0)
BEGIN;
    dbcc inputbuffer(@blk);
    FETCH NEXT FROM crsr INTO @blk;
END;
close crsr;
DEALLOCATE crsr;

--锁定的资源
SELECT #Who.spid,hostname,objid,[type],mode,object_name(objid) as objName FROM #Lock
    JOIN #Who
        ON #Who.spid=#Lock.spid
            AND dbname=@DBName
    WHERE objid<>0;

DROP Table #Who;
DROP Table #Lock;

 

方案三:

===================

select 
request_session_id spid, 
OBJECT_NAME(resource_associated_entity_id) tableName 
from 
sys.dm_tran_locks 
where 
resource_type='OBJECT'

 

方案四:

===================

use master
go
create procedure sp_who_lock
as
begin
declare @spid int,@bl int,
 @intTransactionCountOnEntry  int,
        @intRowcount    int,
        @intCountProperties   int,
        @intCounter    int

 create table #tmp_lock_who (
 id int identity(1,1),
 spid smallint,
 bl smallint)
 
 IF @@ERROR<>0 RETURN @@ERROR
 
 insert into #tmp_lock_who(spid,bl) 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

 IF @@ERROR<>0 RETURN @@ERROR 
  
-- 找到临时表的记录数
 select  @intCountProperties = Count(*),@intCounter = 1
 from #tmp_lock_who
 
 IF @@ERROR<>0 RETURN @@ERROR 
 
 if @intCountProperties=0
  select '现在没有阻塞和死锁信息' as message

-- 循环开始
while @intCounter <= @intCountProperties
begin
-- 取第一条记录
  select  @spid = spid,@bl = bl
  from #tmp_lock_who where Id = @intCounter 
 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 )
 end 

-- 循环指针下移
 set @intCounter = @intCounter + 1
end

drop table #tmp_lock_who

return 0
end

------执行语句
exec sp_who_lock