Error: is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception: The wait operation timed out --- End of inner exception stack trace --- at System.Data.SqlClient.SqlConnection. (SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection. (SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds, Boolean describeParameterEncryptionRequest) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at PetaPoco.Database.Execute(String sql, Object[] args) at DotNetNuke.Data.PetaPoco.PetaPocoHelper.ExecuteNonQuery(String connectionString, CommandType type, Int32 timeout, String sql, Object[] args) at DotNetNuke.Data.SqlDataProvider.ExecuteNonQuery(String procedureName, Object[] commandParameters) at DotNetNuke.Data.DataProvider.UpdateTab(Int32 tabId, Int32 contentItemId, Int32 portalId, Guid versionGuid, Guid defaultLanguageGuid, Guid localizedVersionGuid, String tabName, Boolean isVisible, Boolean disableLink, Int32 parentId, String iconFile, String iconFileLarge, String title, String description, String keyWords, Boolean isDeleted, String url, String skinSrc, String containerSrc, DateTime startDate, DateTime endDate, Int32 refreshInterval, String pageHeadText, Boolean isSecure, Boolean permanentRedirect, Single siteMapPriority, Int32 lastModifiedByuserID, String cultureCode, Boolean IsSystem) at DotNetNuke.Entities.Tabs.TabController.UpdateTab(TabInfo updatedTab) at DotNetNuke.Modules.Admin.Tabs.ManageTabs.SaveTabData(String strAction) at DotNetNuke.Modules.Admin.Tabs.ManageTabs.cmdUpdate_Click(Object Sender, EventArgs e) --- End of inner exception stack trace ---

Any suggestions? The database seems fine. The site is moving quickly other than this. I updated stats and reindexed the tab table. I'm out of ideas.

We've purged the schedule history and event log. There's 800 records in the exceptions table. I've reindexed the entire database and updated statistics and the issue remains. This is in the event log when I try to update permission on a page, followed by the error above:

ModuleId:-1
ModuleDefId:-1
FriendlyName:
ModuleControlSource:DesktopModules/Admin/Tabs/ManageTabs.ascx
AbsoluteURL:/Default.aspx
DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke
ExceptionGUID:8b8e4dee-a9db-4d0b-88bd-231810e847cc
AssemblyVersion:7.4.2
PortalId:0
UserId:1
TabId:204
RawUrl:/Staff-list/ctl/Tab/action/edit/activeTab/permissionsTab?popUp=true
Referrer:http://kl-sl.com/Staff-list/ctl/Tab/a...
UserAgent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36
ExceptionHash:99eesDdATbSzUbWopHbzfQ==
Message:Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

I can't help but wonder if its somehow passing a parameter that SQL is having trouble processing, but I don't have admin rights on the server and can't run profiler to look. Do you have any other suggestions?