sql数据库监控语句

--查找被阻塞进程

Select * from master..sysprocesses where dbid=9 and blocked > 0



--查找阻塞头进程

select * from master..sysprocesses p where dbid=9 and blocked<=0 and exists 

(select 1 from master..sysprocesses where blocked =p.spid)



--查找等待时间长的进程

Select * from master..sysprocesses where dbid=9  order by waittime desc



--进程正在执行的 SQL 语句

dbcc inputbuffer(61);



--中止进程

--kill 177





--定位消耗cpu,io 最高的进程信息

select spid,dbid,cpu,physical_io,login_time,last_batch,status,

hostname,program_name,hostprocess,cmd,nt_username from sysprocesses 

where dbid=9

order by cpu,physical_io desc;







--select OBJECT_NAME(1962490070)

--select db_id('CTI')







--IO消耗大的SQL

SELECT TOP 20

[Total IO] = (qs.total_logical_reads + qs.total_logical_writes)

, [Average IO] = (qs.total_logical_reads + qs.total_logical_writes) /

qs.execution_count

, qs.execution_count

, SUBSTRING (qt.text,(qs.statement_start_offset/2) + 1,

((CASE WHEN qs.statement_end_offset = -1

THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2

ELSE qs.statement_end_offset

END - qs.statement_start_offset)/2) + 1) AS [Individual Query]

, qt.text AS [Parent Query]

, DB_NAME(qt.dbid) AS DatabaseName

, qp.query_plan

FROM sys.dm_exec_query_stats qs

CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt

CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp

ORDER BY [Total IO] DESC



--连接数总数

SELECT COUNT(session_id) AS session_count 

FROM sys.dm_exec_sessions 

where database_id=9



--各服务器连接数

select host_name,login_name, count(session_id) FROM sys.dm_exec_sessions  

where database_id=9

group by host_name, login_name

order by host_name