Saturday, 16 February 2013

SQL Agent Job Script


I use this script to demonstrate how to execute one or more queries dynamically against a list of SQL Server instances.
The script itself explores SQL Agent Job metadata to get job statuses — when the job last ran, when it will run again, an aggregate count of the number of successful and failed executions in the queried time period, T-SQL code to disable the job, etc.


DECLARE @jobHistory TABLE
(
      job_id                UNIQUEIDENTIFIER
    , success               INT
    , cancel                INT
    , fail                  INT
    , retry                 INT
    , last_execution_id     INT
    , last_duration         CHAR(8)
    , last_execution_start  DATETIME
);

WITH lastExecution
AS
(
    SELECT job_id
    , MAX(instance_id) AS last_instance_id
FROM msdb.dbo.sysjobhistory
WHERE step_id = 0
GROUP BY job_id
)

INSERT INTO @jobHistory
SELECT sjh.job_id
    , SUM(CASE WHEN sjh.run_status = 1 AND step_id = 0 THEN 1 ELSE 0 END) AS success
    , SUM(CASE WHEN sjh.run_status = 3 AND step_id = 0 THEN 1 ELSE 0 END) AS cancel
    , SUM(CASE WHEN sjh.run_status = 0 AND step_id = 0 THEN 1 ELSE 0 END) AS fail
    , SUM(CASE WHEN sjh.run_status = 2 THEN 1 ELSE 0 END) AS retry
    , MAX(CASE WHEN sjh.step_id = 0 THEN instance_id ELSE NULL END) last_execution_id
    , SUBSTRING(CAST(MAX(CASE WHEN le.job_id IS NOT NULL THEN sjh.run_duration ELSE NULL END) + 1000000 AS VARCHAR(7)),2,2) + ':'
            + SUBSTRING(CAST(MAX(CASE WHEN le.job_id IS NOT NULL THEN sjh.run_duration ELSE NULL END) + 1000000 AS VARCHAR(7)),4,2) + ':'
            + SUBSTRING(CAST(MAX(CASE WHEN le.job_id IS NOT NULL THEN sjh.run_duration ELSE NULL END) + 1000000 AS VARCHAR(7)),6,2)
            AS last_duration
    , MAX(CASE WHEN le.last_instance_id IS NOT NULL THEN
        CONVERT(datetime, RTRIM(run_date))
        + ((run_time / 10000 *  3600)
        + ((run_time % 10000) / 100 * 60)
        + (run_time  % 10000) % 100) / (86399.9964)
      ELSE '1900-01-01' END) AS last_execution_start
FROM msdb.dbo.sysjobhistory AS sjh
LEFT JOIN lastExecution     AS le
    ON sjh.job_id = le.job_id
   AND sjh.instance_id = le.last_instance_id
GROUP BY sjh.job_id;

/* We need to parse the schedule into something we can understand */
DECLARE @weekDay TABLE (
      mask          INT
    , maskValue     VARCHAR(32)
);

INSERT INTO @weekDay
SELECT 1, 'Sunday'      UNION ALL
SELECT 2, 'Monday'      UNION ALL
SELECT 4, 'Tuesday'     UNION ALL
SELECT 8, 'Wednesday'   UNION ALL
SELECT 16, 'Thursday'   UNION ALL
SELECT 32, 'Friday'     UNION ALL
SELECT 64, 'Saturday';


/* Now let's get our schedule information */
WITH myCTE
AS(
    SELECT sched.name AS 'scheduleName'
        , sched.schedule_id
        , jobsched.job_id
        , CASE
            WHEN sched.freq_type = 1
                THEN 'Once'
            WHEN sched.freq_type = 4
                AND sched.freq_interval = 1
                    THEN 'Daily'
            WHEN sched.freq_type = 4
                THEN 'Every ' + CAST(sched.freq_interval AS VARCHAR(5)) + ' days'
            WHEN sched.freq_type = 8 THEN
                REPLACE( REPLACE( REPLACE((
                    SELECT maskValue
                    FROM @weekDay AS x
                    WHERE sched.freq_interval & x.mask <> 0
                    ORDER BY mask FOR XML RAW)
                , '"/><row maskValue="', ', '), '<row maskValue="', ''), '"/>', '')
                + CASE
                    WHEN sched.freq_recurrence_factor <> 0
                        AND sched.freq_recurrence_factor = 1
                            THEN '; weekly'
                    WHEN sched.freq_recurrence_factor <> 0
                        THEN '; every '
                + CAST(sched.freq_recurrence_factor AS VARCHAR(10)) + ' weeks' END
            WHEN sched.freq_type = 16 THEN 'On day '
                + CAST(sched.freq_interval AS VARCHAR(10)) + ' of every '
                + CAST(sched.freq_recurrence_factor AS VARCHAR(10)) + ' months'
            WHEN sched.freq_type = 32 THEN
                CASE
                    WHEN sched.freq_relative_interval = 1 THEN 'First'
                    WHEN sched.freq_relative_interval = 2 THEN 'Second'
                    WHEN sched.freq_relative_interval = 4 THEN 'Third'
                    WHEN sched.freq_relative_interval = 8 THEN 'Fourth'
                    WHEN sched.freq_relative_interval = 16 THEN 'Last'
                END +
                CASE
                    WHEN sched.freq_interval = 1 THEN ' Sunday'
                    WHEN sched.freq_interval = 2 THEN ' Monday'
                    WHEN sched.freq_interval = 3 THEN ' Tuesday'
                    WHEN sched.freq_interval = 4 THEN ' Wednesday'
                    WHEN sched.freq_interval = 5 THEN ' Thursday'
                    WHEN sched.freq_interval = 6 THEN ' Friday'
                    WHEN sched.freq_interval = 7 THEN ' Saturday'
                    WHEN sched.freq_interval = 8 THEN ' Day'
                    WHEN sched.freq_interval = 9 THEN ' Weekday'
                    WHEN sched.freq_interval = 10 THEN ' Weekend'
                END
                + CASE
                    WHEN sched.freq_recurrence_factor <> 0
                        AND sched.freq_recurrence_factor = 1
                            THEN '; monthly'
                    WHEN sched.freq_recurrence_factor <> 0
                        THEN '; every '
                + CAST(sched.freq_recurrence_factor AS VARCHAR(10)) + ' months'
                  END
            WHEN sched.freq_type = 64   THEN 'StartUp'
            WHEN sched.freq_type = 128  THEN 'Idle'
          END AS 'frequency'
        , ISNULL('Every ' + CAST(sched.freq_subday_interval AS VARCHAR(10)) +
            CASE
                WHEN sched.freq_subday_type = 2 THEN ' seconds'
                WHEN sched.freq_subday_type = 4 THEN ' minutes'
                WHEN sched.freq_subday_type = 8 THEN ' hours'
            END, 'Once') AS 'subFrequency'
        , REPLICATE('0', 6 - LEN(sched.active_start_time))
            + CAST(sched.active_start_time AS VARCHAR(6)) AS 'startTime'
        , REPLICATE('0', 6 - LEN(sched.active_end_time))
            + CAST(sched.active_end_time AS VARCHAR(6)) AS 'endTime'
        , REPLICATE('0', 6 - LEN(jobsched.next_run_time))
            + CAST(jobsched.next_run_time AS VARCHAR(6)) AS 'nextRunTime'
        , CAST(jobsched.next_run_date AS CHAR(8)) AS 'nextRunDate'
    FROM msdb.dbo.sysschedules      AS sched
    JOIN msdb.dbo.sysjobschedules   AS jobsched
        ON sched.schedule_id = jobsched.schedule_id
    WHERE sched.enabled = 1
)

/* Finally, let's look at our actual jobs and tie it all together */
SELECT CONVERT(NVARCHAR(128), SERVERPROPERTY('Servername'))             AS [serverName]
    , job.job_id                                                        AS [jobID]
    , job.name                                                          AS [jobName]
    , CASE WHEN job.enabled = 1 THEN 'Enabled' ELSE 'Disabled' END      AS [jobStatus]
    , COALESCE(sched.scheduleName, '(unscheduled)')                     AS [scheduleName]
    , COALESCE(sched.frequency, '')                                     AS [frequency]
    , COALESCE(sched.subFrequency, '')                                  AS [subFrequency]
    , COALESCE(SUBSTRING(sched.startTime, 1, 2) + ':'
        + SUBSTRING(sched.startTime, 3, 2) + ' - '
        + SUBSTRING(sched.endTime, 1, 2) + ':'
        + SUBSTRING(sched.endTime, 3, 2), '')                           AS [scheduleTime] -- HH:MM
    , COALESCE(SUBSTRING(sched.nextRunDate, 1, 4) + '/'
        + SUBSTRING(sched.nextRunDate, 5, 2) + '/'
        + SUBSTRING(sched.nextRunDate, 7, 2) + ' '
        + SUBSTRING(sched.nextRunTime, 1, 2) + ':'
        + SUBSTRING(sched.nextRunTime, 3, 2), '')                       AS [nextRunDate]
      /* Note: the sysjobschedules table refreshes every 20 min, so nextRunDate may be out of date */
    , COALESCE(jh.success, 0)                                           AS [success]
    , COALESCE(jh.cancel, 0)                                            AS [cancel]
    , COALESCE(jh.fail, 0)                                              AS [fail]
    , COALESCE(jh.retry, 0)                                             AS [retry]
    , COALESCE(jh.last_execution_id, 0)                                 AS [lastExecutionID]
    , jh.last_execution_start                                           AS [lastExecutionStart]
    , COALESCE(jh.last_duration, '00:00:01')                            AS [lastDuration]
    , 'EXECUTE msdb.dbo.sp_update_job @job_id = '''
        + CAST(job.job_id AS CHAR(36)) + ''', @enabled = 0;'            AS [disableSQLScript]
FROM msdb.dbo.sysjobs               AS job
LEFT JOIN myCTE                     AS sched
    ON job.job_id = sched.job_id
LEFT JOIN @jobHistory               AS jh
    ON job.job_id = jh.job_id
WHERE job.enabled = 1 -- do not display disabled jobs
    --AND jh.last_execution_start >= DATEADD(day, -1, GETDATE()) /* Pull just the last 24 hours */
ORDER BY nextRunDate;


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