SQL SERVER死鎖查詢,死鎖分析,解鎖,查詢占用
From: http://www.rzrgm.cn/K-R-/p/18431639
簡單點的處理方法:
1、查詢死鎖的表
select request_session_id spid,OBJECT_NAME(resource_associated_entity_id) tableName from sys.dm_tran_locks where resource_type='OBJECT'
2、解鎖
declare @spid int Set @spid = 79 --鎖表進程 declare @sql varchar(1000) set @sql='kill '+cast(@spid as varchar) exec(@sql)

專業(yè)點的處理方法:
1.查詢死鎖的表:
SELECT
request_session_id spid,
OBJECT_NAME(
resource_associated_entity_id
) tableName
FROM
sys.dm_tran_locks
WHERE
resource_type = 'OBJECT'
2.分析被鎖死的原因:
select t1.resource_type [資源鎖定類型]
, DB_NAME(resource_database_id) as 數(shù)據(jù)庫名
, t1.resource_associated_entity_id 鎖定對象
, t1.request_mode as 等待者請求的鎖定模式
, t1.request_session_id 等待者SID
, t2.wait_duration_ms 等待時間
, (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 等待者要執(zhí)行的SQL
, t2.blocking_session_id [鎖定者SID]
, (select TEXT
from sys.sysprocesses p
cross apply
sys.dm_exec_sql_text(p.sql_handle)
where p.spid = t2.blocking_session_id
) 鎖定者執(zhí)行語句
from sys.dm_tran_locks t1,
sys.dm_os_waiting_tasks t2
where t1.lock_owner_address = t2.resource_address
3.解鎖:
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、查詢SQL占用資源情況:
SELECT TOP 20
total_worker_time/1000 AS [總消耗CPU 時間(ms)],execution_count [運行次數(shù)],
qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 時間(ms)],
last_execution_time AS [最后一次執(zhí)行時間],max_worker_time /1000 AS [最大執(zhí)行時間(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的語法], qt.text [完整語法],
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


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