有關ASP.NET MVC4和實體框架的超時問題

我在我們的ASP.NET MVC應用程序之一中收到以下超時錯誤。以下是堆棧跟蹤。有關ASP.NET MVC4和實體框架的超時問題

奇怪的是，用戶只有大約5秒鐘後纔得到錯誤，她單擊調用LINQ查詢的按鈕。但是如果她再次點擊該按鈕，大約一分鐘後，報告就會出現，並且一切正常。

事實上，她在第一次嘗試僅僅5秒後就得到了錯誤，這告訴我這不是超時問題......還是它？ LINQ查詢有點複雜，但當第二次點擊按鈕時，它工作正常。任何建議這可能是什麼？

這裏是使超時的代碼（LINQ查詢）：

private List<ProductionReportExcelWriter.ProductLine> GetProductList(ProductionReporViewInput input) 
    { 
     return _context.Set<Product>() 
      .Include(p => p.Dough) 
      .Include(oi => oi.OrderItems) 
      .Include(oi => oi.OrderItems.Select(o => o.Order)) 
      .Include(oi => oi.OrderItems.Select(o => o.Order.Client)) 
      .AsQueryable() 
      .ForNextOrderDate(input.ReportDate) 
      .WithActiveClients() 
      .ForOrdersItemsWithQuantities() 
      .WithoutHiddenProducts().ToList() 
      .Select(p => new ProductionReportExcelWriter.ProductLine 
      { 
       ProductId = p.Id, 
       Dough = p.Dough.Name, 
       ProductCode = p.ProductCode, 
       DoughPosition = p.Dough.Position, 
       Description = p.Description, 
       Weight = p.Weight, 
       Account = p.Account, 
      }).ToList(); 
    }

錯誤消息：

System.Data.Entity.Core.EntityCommandExecutionException：在執行時發生錯誤命令定義。詳情請參閱內部例外。

System.Data.SqlClient.SqlException：超時過期。操作完成之前超時的時間或服務器沒有響應。

System.ComponentModel.Win32Exception：等待操作超時

完整的堆棧跟蹤：

System.Data.Entity.Core.EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details. 
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.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) 
at System.Data.SqlClient.SqlInternalConnection.OnError(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.SqlDataReader.TryConsumeMetaData() 
at System.Data.SqlClient.SqlDataReader.get_MetaData() 
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) 
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.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) 
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) 
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) 
at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) 
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__c(DbCommand t, DbCommandInterceptionContext`1 c) 
at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed) 
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext) 
at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior) 
at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) 
at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) 
--- End of inner exception stack trace --- 
at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) 
at System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues) 
at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass3.<GetResults>b__2() 
at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) 
at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass3.<GetResults>b__1() 
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation) 
at System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) 
at System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0() 
at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext() 
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) 
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source) 
at Arhoma.Core.Views.ProductionReportViewFactory.GetProductList(ProductionReporViewInput input) in C:\Projects\webapp-commande\core-commande\Views\ProductionReportViewFactory.cs:line 66 
at Arhoma.Core.Views.ProductionReportViewFactory.CreateProductionReportExcelWriterModel(ProductionReporViewInput input) in C:\Projects\webapp-commande\core-commande\Views\ProductionReportViewFactory.cs:line 37 
at Arhoma.Core.Views.ProductionReportViewFactory.Load(ProductionReporViewInput input) in C:\Projects\webapp-commande\core-commande\Views\ProductionReportViewFactory.cs:line 26 
at Arhoma.Core.ViewRepositoryOutputBuilder`1.Using[TInput](TInput input) in C:\Projects\webapp-commande\core-commande\ViewRepository.cs:line 42 
at Arhoma.WebApp.Controllers.ClosingController.ProductionReport(Nullable`1 date) in C:\Projects\webapp-commande\webapp-commande\Controllers\ClosingController.cs:line 47 
at lambda_method(Closure , ControllerBase , Object[]) 
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) 
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) 
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41() 
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<>c__DisplayClass2a.<BeginInvokeAction>b__20() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) 
at System.Web.Mvc.Controller.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() 
at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() 
at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) 
at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) 
at System.Web.Mvc.MvcHandler.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End() 
at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) 
at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) 
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

來源

2016-08-17 Ray

如何發佈導致異常的代碼？ – ojf

我添加了導致超時的linq查詢。 – Ray

我會在try..catch..finally中包裝它，並查看任何可用的內部異常。也可以嘗試簡化LINQ以查看是否顯示任何內容。我也不認爲p.Account之後的逗號（，）不應該在那裏，我很驚訝它正在編譯。 –

在連接字符串變量寫入有web.config文件，增加超時像做它超時= 200或超時= 500。例如 -

<add name="ConnectionString" connectionString="Data Source=;Initial Catalog=;Persist Security Info=True;User ID=sa;[email protected];Connect Timeout=200" providerName="System.Data.SqlClient"/>

來源

2016-08-20 16:29:21

我不認爲這會增加命令或查詢的超時時間。我認爲這是連接超時。這不是我遇到的問題。 – Ray

嘗試一次，我認爲它會起作用.... –

有關ASP.NET MVC4和實體框架的超時問題

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