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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Scheduler exception after Upgrade to 7.3.0Scheduler exception after Upgrade to 7.3.0
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6/12/2014 7:03 PM
 
Rohan

Joined: 2/6/2008
Posts: 24

I'm receiving the following error in the event log every 30 seconds since I upgraded to 7.3.0.  I have shut down all the scheduled events and it still occurs

Thoughts?

 

AssemblyVersion:7.3.0

PortalID:-1

PortalName:

UserID:-1

UserName:

ActiveTabID:-1

ActiveTabName:

RawURL:

AbsoluteURL:

AbsoluteURLReferrer:

UserAgent:

DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID:8009cbb7-6e3b-4998-8ea1-4e945fe71606

InnerException:Sequence contains more than one matching element

FileName:

FileLineNumber:0

FileColumnNumber:0

Method:System.Linq.Enumerable.Single

StackTrace:

Message:

System.InvalidOperationException: Sequence contains more than one matching element
   at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
   at DotNetNuke.Services.Scheduling.Scheduler.CoreScheduler.LoadQueueFromTimer()
   at DotNetNuke.Services.Scheduling.Scheduler.CoreScheduler.Start()
 
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6/12/2014 11:36 PM
 
Sebastian Leupold


Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

www.dnnwerk.de
Joined: 3/8/2004
Posts: 46212
it sounds like there are duplicate items in Scheduler table.
Cheers from Germany,
Sebastian Leupold

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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6/13/2014 2:59 AM
 
vincent p

Joined: 12/18/2003
Posts: 4

I'm seeing the same issue. I checked the table, no dupe entries.. 
 
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6/13/2014 6:26 PM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
if I look at https://github.com/dnnsoftware/Dnn.Pl... I can see code which attempts to check if the current server executing the scheduled task is a "known" server so it can evaluate if it's running in a server group. If would seem that ServerController.GetServers().Single is returning more than 1 result. I would recommend checking the "webservers" table to see if there is anything odd in there e.g. 2 servers with the same name.
Buy the new Professional DNN7: Open Source .NET CMS Platform book Amazon US
 
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6/13/2014 8:04 PM
 
vincent p

Joined: 12/18/2003
Posts: 4
Yes, there was a dupe server entry in webservers.. the dupe was not enabled.. perhaps the query should take the enabled field into account.
 
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