I am getting a repeating error and sometimes my site goes offline with 503 error message. Not sure the reason. But please can you check this error message in the event viewer and can you help me how to fix this? I am using DNN 7.4.1 now.

AbsoluteURL:/Default.aspx

DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID:f0b60ecd-4467-4849-b4a7-5f8bce2b6e16

AssemblyVersion:

PortalId:-1

UserId:-1

TabId:-1

RawUrl:

Referrer:

UserAgent:

ExceptionHash:u+Qr4LZsuBuQdgqY3CN0xQ==

Message:SimilarCount

StackTrace:

   at System.Data.ProviderBase.FieldNameLookup.GetOrdinal(String fieldName)
   at System.Data.SqlClient.SqlDataReader.GetOrdinal(String name)
   at System.Data.SqlClient.SqlDataReader.get_Item(String name)
   at DotNetNuke.Services.Journal.JournalItem.Fill(IDataReader dr)
   at DotNetNuke.Common.Utilities.CBO.FillObjectFromReader(Object objObject, IDataReader dr)

 

InnerMessage:

InnerStackTrace:

 

Source:System.Data

FileName:

FileLineNumber:0

FileColumnNumber:0

Method:

Server Name: 

This same issue is giving for all users and I can see it in the event viewer so many times in a few minutes when the users are accessing the site. Please, give us an idea or please let us know why this is happening. I am using DNN 7.4.1 and please let me know what would be the solution. Any ideas please? I can not understand the reason

Thank you very much for your reply Richard.

What could be the solution and how can I fix this error? This error is loading all the time when user is accessing the site or trying to load a page. Appreciate if I can have an advise.

I am using DNN 7.4.1

This error was here from a long time now.

Can this be an issue for the site performance? Loading time, AppPool memory usage limite etc?