SQL Server 日常維護--查詢當前正在執行的語句、死結、堵塞

標籤：master   _id   stat   proc   comment   hostname   deadlock   維護   gpo   

查詢當前正在執行的語句：

 1 SELECT   2 der.[session_id],der.[blocking_session_id],   3 sp.lastwaittype,sp.hostname,sp.program_name,sp.loginame,   4 der.[start_time] AS ‘開始時間‘,   5 der.[status] AS ‘狀態‘,   6 dest.[text] AS ‘sql語句‘,   7 DB_NAME(der.[database_id]) AS ‘資料庫名‘,   8 der.[wait_type] AS ‘等待資源類型‘,   9 der.[wait_time] AS ‘等待時間‘,  10 der.[wait_resource] AS ‘等待的資源‘,  11 der.[logical_reads] AS ‘邏輯讀次數‘  12 FROM sys.[dm_exec_requests] AS der  13 INNER JOIN master.dbo.sysprocesses AS sp ON der.session_id=sp.spid  14 CROSS APPLY  sys.[dm_exec_sql_text](der.[sql_handle]) AS dest  15 --WHERE [session_id]>50 AND session_id<>@@SPID  16 ORDER BY der.[session_id]  17 GO  

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是否堵塞：

1 SELECT spid,blocked,waittime,waittype,waitresource,p.dbid,cpu,physical_io,memusage,open_tran 2 ,status,login_time,last_batch,hostname,program_name,hostprocess,loginame,cmd,text 3 FROM master.dbo.sysprocesses p CROSS APPLY sys.dm_exec_sql_text(p.sql_handle) s 4 WHERE blocked > 0 OR spid IN(SELECT blocked FROM master.dbo.sysprocesses WHERE blocked > 0) 5 go

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是否有未提交事物：

1 select spid,blocked,waittime,waittype,waitresource,p.dbid,cpu,physical_io,memusage,open_tran    2 ,status,login_time,last_batch,hostname,program_name,hostprocess,loginame,cmd,text    3 from master.dbo.sysprocesses p cross apply sys.dm_exec_sql_text(p.sql_handle) s    4 where open_tran <> 0    5 go 

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 死結： 

1 --drop table #deadlock2 3 CREATE TABLE #deadlock(LogDate DATETIME,ProcessInfo VARCHAR(20),Text VARCHAR(2000))  4 go  5 INSERT INTO #deadlock EXEC xp_readerrorlog 0,1,‘deadlock victim‘,NULL,‘2016-07-20 14:00:00‘,‘2016-07-30‘,‘DESC‘    6 go  

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死結加nolock最佳化

 

SQL Server 日常維護--查詢當前正在執行的語句、死結、堵塞