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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Strange scheduler behaviourStrange scheduler behaviour
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6/19/2009 9:05 AM
 
M Bouwman


www.bondforwebsolutions.nl
Joined: 12/1/2004
Posts: 430

can someone explain the strange behaviour of the DNN scheduler.
I know it only runs when the portal is active, but it is a fairly busy portal, so this cannot be (the only) cause.
But for example the PurgeCache task is set up to run every 3 hours, yet it shows this in the history:

Omschrijving Duur (ms) Gelukt Start/Stop/Volgende Start
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
Cache Synchronization Files Processed: 0, Purged: 0, Errors: 0 		0,017 True S: 19-6-2009 13:49:23
E: 19-6-2009 13:49:23
N: 19-6-2009 16:49:23
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
Cache Synchronization Files Processed: 0, Purged: 0, Errors: 0 		0,343 True S: 19-6-2009 10:31:32
E: 19-6-2009 10:31:32
N: 19-6-2009 13:31:32
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
Cache Synchronization Files Processed: 0, Purged: 0, Errors: 0 		0,36 True S: 19-6-2009 10:31:32
E: 19-6-2009 10:31:32
N: 19-6-2009 13:31:32
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
Cache Synchronization Files Processed: 0, Purged: 0, Errors: 0 		0,36 True S: 19-6-2009 10:31:32
E: 19-6-2009 10:31:32
N: 19-6-2009 13:31:32
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
Cache Synchronization Files Processed: 0, Purged: 0, Errors: 0 		0,36 True S: 19-6-2009 10:31:32
E: 19-6-2009 10:31:32
N: 19-6-2009 13:31:32
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
Cache Synchronization Files Processed: 0, Purged: 0, Errors: 0 		0,36 True S: 19-6-2009 10:31:32
E: 19-6-2009 10:31:32
N: 19-6-2009 13:31:32

So it runs 5 times and then again after 4 hours ?????

The search engine is set up to run 1 time per day, yet it has multiple entries for 1 day

I've got another task which should run every 5 minutes, but it looks like it only does about every half hour or so.

 
 
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6/22/2009 9:33 AM
 
Mitchel Sellers


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www.mitchelsellers.com
Joined: 1/24/2007
Posts: 7846

A few questions for you.

  1. Are you in a web farm environment?
  2. If #1 is true, have you setup a servername for each task, to prevent multiple runs?
  3. What scheduler mode are you using?  (Host -> Host Settings -> Other Settings)
-Mitchel Sellers
Microsoft MVP, ASPInsider, DNN MVP
CEO/Director of Development - IowaComputerGurus Inc.
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Visit mitchelsellers.com for my mostly DNN Blog and support forum.

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7/7/2009 11:16 AM
 
Chhavi Saxena

Joined: 1/12/2007
Posts: 24

Mitch,

We are running into the exact same issue where jobs are running multiple times within the same second.  We are running in a web farm environment and have set the jobs to run on only one server.  I have verified from the Schedule History table that they are running on just one server however multiple instances of the jobs are running at the exact same time.  The Scheduler mode is "Timer".  Please help.

Thanks,

Chhavi
 
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