有些时候，有些作业遇到问题执行时间过长，因此我写了一个脚本可以根据历史记录，找出执行时间过长的作业，在监控中就可以及时发现这些作业并尽早解决，代码如下：
SELECT sj.name
, sja.start_execution_date,DATEDIFF (SECOND ,sja.start_execution_date,GETDATE() ) AS ExecutedMin,ja.AvgRuntimeOnSucceed
FROM msdb.dbo.sysjobactivity AS sja
INNER JOIN msdb.dbo.sysjobs AS sj ON sja.job_id = sj.job_id INNER
join
(
SELECT job_id,
AVG
((run_duration/10000 * 3600) + ((run_duration%10000)/100*60) + (run_duration%10000)%100)
+
NULLIF(0,STDEV
((run_duration/10000 * 3600) + ((run_duration%10000)/100*60) + (run_duration%10000)%100)) AS 'AvgRuntimeOnSucceed'
FROM msdb.dbo.sysjobhistory
WHERE step_id = 0 AND run_status = 1
GROUP BY job_id) ja
ON sj.job_id = ja.job_id
WHERE sja.start_execution_date IS NOT NULL --作业有开始
AND sja.stop_execution_date IS NULL --作业没结束
AND sja.start_execution_date>DATEADD(DAY,-2,GETDATE()) --作业2天内开始
-- AND DATEDIFF (SECOND ,sja.start_execution_date,GETDATE() )>ja.AvgRuntimeOnSucceed *1.5 --作业执行时间比历史平均时间超了50%"
如果作业经常出现问题，可以使用该脚本监控尽早发现问题。