We are seeing problems where our regularly scheduled jobs are not running at the expected times. There is nothing in the eventlogs that suggest a cause for this we just end up seeing entries in the log like this:
8/7/2012 1:09:05 AM Debug Next execution (2) for job 'DWAYProd_FENOC_Hourly_YWAYRunBatchRules' is: 8/7/2012 2:05:16 AM
8/7/2012 1:09:05 AM Info Job completed: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
.
.
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8/7/2012 3:32:26 AM Info Job started: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
8/7/2012 3:32:26 AM Debug Job (2945999) was added to processlist: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
Where the job just doesn't run when scheduled. We are not sure what is causing this but sometimes we also see jobs that missed runs such as the above one did (at hours 2 AM 4 AM and 5 AM) then run many times in one hour later one as if the backed up runs are trying to process:
8/7/2012 7:09:11 AM Info Job started: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
...
8/7/2012 7:22:39 AM Info Job started: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
...
8/7/2012 7:36:15 AM Info Job started: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
...
8/7/2012 7:49:23 AM Info Job started: DWAYProd_FENOC_Hourly_YWAYRunBatchRules
when obviously since this is an hourly job that is only supposed to run 5 minutes and 16 seconds after every hour that should not be running at any of those times. I will attach a log and a screenshot but this problem seems to have popped up overnight.