ASP.NET SQL错误加载页面

Question

We're getting the following error message when trying to login to our ASP.NET application:

Server Error in '/' Application.

The wait operation timed out

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ComponentModel.Win32Exception: The wait operation timed out

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[Win32Exception (0x80004005): The wait operation timed out]

[SqlException (0x80131904): Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.] System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction) +1753346 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction) +5295154 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +242 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1682 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() +59 System.Data.SqlClient.SqlDataReader.get_MetaData() +90 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +365 System.Data.SqlClient.SqlCommand. RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) +1325 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +175 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +53 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +134 System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41 System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +10 System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +437

[EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details.] System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +507 System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute(ObjectContext context, ObjectParameterCollection parameterValues) +675 System.Data.Objects.ObjectQuery 1.GetResults(Nullable 1 forMergeOption) +102 System.Data.Objects.ObjectQuery 1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +30 System.Linq.Enumerable.Single(IEnumerable 1 source) +100 System.Data.Objects.ELinq.ObjectQueryProvider.b__3(IEnumerable 1 sequence) +5 System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle(IEnumerable 1 query, Expression queryRoot) +25 System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression) +70 System.Linq.Queryable.Count(IQueryable`1 source) +233 BioWaveWeb.Default.Page_Load(Object sender, EventArgs e) +790 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Obje ct sender, EventArgs e) +51 System.Web.UI.Control.OnLoad(EventArgs e) +92 System.Web.UI.Control.LoadRecursive() +54 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929

Can someone assist or give any comments on how to resolve this?

Answer 1

It appears your ASP.NET application is making a call to a SQL Server database via a COM (Component Object Model) component, but something in or downstream of that component is failing and causing the request to the database to time out. You're almost certainly going to have to get in touch with some development staff that can debug this issue in particular to determine what component(s) is/are involved, what servers are being contacted, and what intermediate error(s) may be occurring that are causing the failure/timeout. Very difficult to provide much more detail than that at this point based on this stack trace.

EDIT: A true "timeout" could be indicative of something inside a stored procedure that is becoming stuck in an infinite loop (as one possibility). There are myriad other possibilities, so take that as merely one possibility among many.