How to automatically STOP SQL Server Agent when no jobs are running?

Question

I have around 40 different sql server jobs in one instance. They all have different schedules. Some run once a day some every two mins some every five mins. If I have a need to

Answer 1

how can I find the best time when no jobs are running so I won't interrupt any of my jobs?

You basically want to find a good window to perform some maintenance. @MaxVernon has blogged about it here with a handy script

/*
      Shows gaps between agent jobs
-- http://www.sqlserver.science/tools/gaps-between-sql-server-agent-jobs/
-- requires SQL Server 2012+ since it uses the LAG aggregate.
 Note: On SQL Server 2005, SQL Server 2008, and SQL Server 2008 R2, you could replace the LastEndDateTime column definition with:

       LastEndDateTime = (SELECT TOP(1) s1a.EndDateTime FROM s1 s1a WHERE s1a.rn = s1.rn - 1)
*/
DECLARE @EarliestStartDate DATETIME;
DECLARE @LatestStopDate DATETIME;
SET @EarliestStartDate = DATEADD(DAY, -1, GETDATE());
SET @LatestStopDate = GETDATE();
;WITH s AS 
(
    SELECT StartDateTime = msdb.dbo.agent_datetime(sjh.run_date, sjh.run_time)
          , MaxDuration = MAX(sjh.run_duration)
    FROM msdb.dbo.sysjobs sj 
          INNER JOIN msdb.dbo.sysjobhistory sjh ON sj.job_id = sjh.job_id
    WHERE sjh.step_id = 0
        AND msdb.dbo.agent_datetime(sjh.run_date, sjh.run_time) >= @EarliestStartDate
        AND msdb.dbo.agent_datetime(sjh.run_date, sjh.run_time) < = @LatestStopDate
    GROUP BY msdb.dbo.agent_datetime(sjh.run_date, sjh.run_time)
    UNION ALL
    SELECT StartDate = DATEADD(SECOND, -1, @EarliestStartDate)
        , MaxDuration = 1
    UNION ALL 
    SELECT StartDate = @LatestStopDate
        , MaxDuration = 1
)
, s1 AS 
(
SELECT s.StartDateTime
    , EndDateTime = DATEADD(SECOND, s.MaxDuration - ((s.MaxDuration / 100) * 100)
        + (((s.MaxDuration - ((s.MaxDuration / 10000) * 10000)) 
                    - (s.MaxDuration - ((s.MaxDuration / 100) * 100))) / 100) * 60
        + (((s.MaxDuration - ((s.MaxDuration / 1000000) * 1000000)) 
                    - (s.MaxDuration - ((s.MaxDuration / 10000) * 10000))) / 10000) * 3600, s.StartDateTime)
FROM s
)
, s2 AS
(
    SELECT s1.StartDateTime
        , s1.EndDateTime
        , LastEndDateTime = LAG(s1.EndDateTime) OVER (ORDER BY s1.StartDateTime)
    FROM s1 
)
SELECT GapStart = CONVERT(DATETIME2(0), s2.LastEndDateTime)
    , GapEnd = CONVERT(DATETIME2(0), s2.StartDateTime)
    , GapLength = CONVERT(TIME(0), DATEADD(SECOND, DATEDIFF(SECOND, s2.LastEndDateTime, s2.StartDateTime), 0))
FROM s2 
WHERE s2.StartDateTime > s2.LastEndDateTime
    ORDER BY s2.StartDateTime;