From: https://www.cnblogs.com/K-R-/p/18431639
简单点的处理方法：
1、查询死锁的表
select request_session_id spid,OBJECT_NAME(resource_associated_entity_id) tableName
from sys.dm_tran_locks where resource_type='OBJECT'
2、解锁
declare @spid int
Set @spid = 79 --锁表进程
declare @sql varchar(1000)
set @sql='kill '+cast(@spid as varchar)
exec(@sql)
专业点的处理方法：
1.查询死锁的表：
SELECT
request_session_id spid,
OBJECT_NAME(
resource_associated_entity_id
) tableName
FROM
sys.dm_tran_locks
WHERE
resource_type = 'OBJECT'
2.分析被锁死的原因：
select t1.resource_type [资源锁定类型]
, DB_NAME(resource_database_id) as 数据库名
, t1.resource_associated_entity_id 锁定对象
, t1.request_mode as 等待者请求的锁定模式
, t1.request_session_id 等待者SID
, t2.wait_duration_ms 等待时间
, (select TEXT
from sys.dm_exec_requests r
cross apply
sys.dm_exec_sql_text(r.sql_handle)
where r.session_id = t1.request_session_id) as 等待者要执行的SQL
, t2.blocking_session_id [锁定者SID]
, (select TEXT
from sys.sysprocesses p
cross apply
sys.dm_exec_sql_text(p.sql_handle)
where p.spid = t2.blocking_session_id
) 锁定者执行语句
from sys.dm_tran_locks t1,
sys.dm_os_waiting_tasks t2
where t1.lock_owner_address = t2.resource_address
3.解锁：
create Proc Sp_KillAllProcessInDB
@DbName VarChar(100)
as
if db_id(@DbName) = Null
begin
Print 'DataBase dose not Exist'
end
else
Begin
Declare @spId Varchar(30)
DECLARE TmpCursor CURSOR FOR
Select 'Kill ' + convert(Varchar, spid) as spId
from master..SysProcesses
where db_Name(dbID) = @DbName
and spId <> @@SpId
and dbID <> 0
OPEN TmpCursor
FETCH NEXT FROM TmpCursor
INTO @spId
WHILE @@FETCH_STATUS = 0
BEGIN
Exec (@spId)
FETCH NEXT FROM TmpCursor
INTO @spId
END
CLOSE TmpCursor
DEALLOCATE TmpCursor
end
4、查询SQL占用资源情况：
SELECT TOP 20
total_worker_time/1000 AS [总消耗CPU 时间(ms)],execution_count [运行次数],
qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 时间(ms)],
last_execution_time AS [最后一次执行时间],max_worker_time /1000 AS [最大执行时间(ms)],
SUBSTRING(qt.text,qs.statement_start_offset/2+1,
(CASE WHEN qs.statement_end_offset = -1
THEN DATALENGTH(qt.text)
ELSE qs.statement_end_offset END -qs.statement_start_offset)/2 + 1)
AS [使用CPU的语法], qt.text [完整语法],
dbname=db_name(qt.dbid),
object_name(qt.objectid,qt.dbid) ObjectName
FROM sys.dm_exec_query_stats qs WITH(nolock)
CROSS apply sys.dm_exec_sql_text(qs.sql_handle) AS qt
WHERE execution_count>1
ORDER BY total_worker_time DESC