Activity Monitor paused. The wait operation timed out

Occasional Visitor

Hi, im facing an issue in Sql SERVER instance where my Activity Monitor when opened gives an error that Activity Monitor is paused.  The wait operation timed out. 

I have tried restarting. tried reseting performance counters, connect from remote SSMS but nothing is working.

Will highly appreciate the support and suggestions.


activity mon.jpeg


1 Reply

Hi @MuneebAshraf --


This error usually indicates that SQL Server is very busy and/or has insufficient resources available to execute the queries used by Activity Monitor.  I would recommend checking SQL manually using a query such as "sp_who2" to see what is actively running.  You may also want to look at Task Manager or Resource Monitor on the server itself.  I've also included a query below that you can execute in SQL Server to get an understanding of CPU utilization.  Take care.

	   DECLARE @ts_now BIGINT
		select @ts_now = cpu_ticks / (cpu_ticks/ms_ticks) from sys.dm_os_sys_info; 
        SELECT record_id,
                DATEADD(ms, -1 * (@ts_now - [timestamp]), GETDATE()) AS EventTime, 
                100 - SystemIdle - SQLProcessUtilization AS OtherProcessUtilization
                --CAST(record AS XML)
        FROM (
                        record.value('(./Record/@id)[1]', 'bigint') AS record_id,
                        record.value('(./Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'bigint') AS SystemIdle,
                        record.value('(./Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'bigint') AS SQLProcessUtilization,
                FROM (
                        SELECT TIMESTAMP, CONVERT(XML, record) AS record 
                        FROM sys.dm_os_ring_buffers 
                        WHERE ring_buffer_type = N'RING_BUFFER_SCHEDULER_MONITOR'
                        AND record LIKE '% %') AS x
                ) AS y 
        ORDER BY record_id DESC