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  • 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
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  • 原文地址:https://www.cnblogs.com/honghong75042/p/4223171.html
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