Hi There, 

First time seeking help here, usually manage to track the issue from blogs and forums but this time I could not find any post that  helped me so far.

We currently have a dedicated Server2012R2 running DNN version 7.40. The website is making use of localization with English (default) and 2 other language packs (French, German)  The website has been up for the past 2 months with no issues, however from the past 2 weeks we have been experiencing issues when creating new pages . 

When we try to create a page the loading screen takes 1min and it times out (loading stops but user is not redirected). Then we go to find the page only to find that the English and the German versions have been created. Through the Page localization option we then use the Add Missing Language button to add the French page. which takes about 5min to be created.

Occasionally we are receiving the message 'An Item with the Same key has already been Added' message  when creating a page, with the following Trace 

 at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
   at DotNetNuke.Entities.Tabs.TabInfo.get_LocalizedTabs()
   at DotNetNuke.Entities.Urls.TabPathHelper.IsTabHomePage(TabInfo tab, PortalSettings portalSettings)
   at DotNetNuke.Entities.Urls.AdvancedFriendlyUrlProvider.ImproveFriendlyUrlWithMessages(TabInfo tab, String friendlyPath, String pageName, PortalSettings portalSettings, Boolean ignoreCustomRedirects, FriendlyUrlSettings settings, List`1& messages, Boolean cultureSpecificAlias, Guid parentTraceId)
   at DotNetNuke.Entities.Urls.AdvancedFriendlyUrlProvider.ImprovedFriendlyUrlWithMessages(TabInfo tab, String path, String pageName, String httpAlias, Boolean ignoreCustomRedirects, FriendlyUrlSettings settings, List`1& messages, Guid parentTraceId)
   at DotNetNuke.Entities.Urls.FriendlyUrlController.ValidateUrl(String url, Int32 validateUrlForTabId, PortalSettings settings)
   at DotNetNuke.Entities.Urls.FriendlyUrlController.ValidateUrl(String cleanUrl, Int32 validateUrlForTabId, PortalSettings settings, Boolean& modified)
   at DotNetNuke.Modules.Admin.Tabs.ManageTabs.IsPageUrlValid()
   at DotNetNuke.Modules.Admin.Tabs.ManageTabs.cmdUpdate_Click(Object Sender, EventArgs e)

Forum post indicated that this could be related to duplicate Settings but its not the case. On the other hand the 'Tabs' table does have duplicate TabName and we are also receiving  a Host Alert Log  Message ('Advanced Friendly URL Provider Duplicate URL Warni Page Naming Conflict Duplicate' )

We currently have a total of 1475 pages (count from Tabs table)  and an average page creation for 3 language is taking approximately 30-40 min  

Also was going to run the TurboScripts but the read me specified to 'not  run any or the scripts, if you are experiencing timeouts due to excessive transaction log size or DNN Event log size.'

I am truly lost on this issue and would like to seek help if possible

Thanks

Hi Sebastian,

Thanks for your reply, We were able to run the turbo scripts and rename any duplicate instances present in the tabUrls table. However we did not see any improvement. 

Upon further investigation of the Event Log we found out a large number of 'Module Updated' messages (over 250 per each module for 5 modules) for Apollo MLHTML modules that are being used across all pages (example Multilingual Footer links, Multilingual Header etc)

After that we are receiving 

Scheduler Event Failure/ Scheduler Exception/ General Exception. Unable to create Lucene writer (lock file is in use). Please recycle AppPool in IIS to release lock.

Have you ever encountered such behaviour before, and would you suggest any other optimisations 

Regards

Gilbert