实体框架更新大表失败 - 异常：等待操作超时

Question

Entity Framework 6.1.3 update on a large table is failing in the production environment

Exception:

The wait operation timed out

I have an Issue table with nearly 8000000 records. While inserting records, the exception occurs

The wait operation timed out

While inserting record we do some background tasks in on SQL transaction.

1. Insert values in the Notification table (to send a notification to the user).
2. Insert values in the Change table. The Change table keeps the history changed value, old value, new value, etc. And I think this transaction causes the timeout exception. Need some inputs

-- statement #1
begin transaction with isolation level: ReadCommitted

-- statement #2
UPDATE [dbo].[Issues]
SET [CategoryID] = @0, [SubcategoryID] = @1, [HandlerID] = @2, [Modified] = @3, [RegionID] = @4, [TeamID] = @5, [Closed] = @6, [Address] = @7, [AddressDetails] = @8, [Description] = @9, [Location] = @10, [Status] = @11, [Visibility] = @12, [ReportedBy_Address] = @13, [ReportedBy_EmailAddress] = @14, [ReportedBy_Name] = @15, [ReportedBy_PhoneNumber] = @16, [ForwardedMessage] = @17, [IsUrgent] = @18, [IsNewlyAssigned] = @19, [CategoryField] = @20, [IntegrationFault] = @21
WHERE ([ID] = @22)

-- statement #3
INSERT [dbo].[ChangeSets]([Created], [ApplicationID], [UserID])
VALUES (@0, @1, NULL)
SELECT [ID]
FROM [dbo].[ChangeSets]
WHERE @@ROWCOUNT > 0 AND [ID] = scope_identity()

-- statement #4
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #5
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #6
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #7
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #8
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #9
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #10
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #11
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #12
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #13
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #14
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #15
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #16
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #17
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #18
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #19
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #20
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #21
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Changes]([ChangeSetID], [EntityID], [Name], [Type], [PreviousValue], [NewValue])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, @1, @2, @3, @4, @5)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Changes] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #22
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Notifications]([Created], [CreatedByID], [Modified], [ModifiedByID], [UserID], [Person_Address], [Person_EmailAddress], [Person_Name], [Person_PhoneNumber], [Type], [IssueID], [CommentID], [AttachmentID], [RegionID], [OrganizationID], [IsHidden], [IsRead])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, NULL, NULL, NULL, @1, NULL, NULL, NULL, NULL, @2, @3, NULL, NULL, @4, @5, @6, @7)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Notifications] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #23
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Notifications]([Created], [CreatedByID], [Modified], [ModifiedByID], [UserID], [Person_Address], [Person_EmailAddress], [Person_Name], [Person_PhoneNumber], [Type], [IssueID], [CommentID], [AttachmentID], [RegionID], [OrganizationID], [IsHidden], [IsRead])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, NULL, NULL, NULL, NULL, NULL, @1, @2, NULL, @3, @4, NULL, NULL, @5, @6, @7, @8)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Notifications] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #24
DECLARE @generated_keys table([ID] uniqueidentifier)
INSERT [dbo].[Notifications]([Created], [CreatedByID], [Modified], [ModifiedByID], [UserID], [Person_Address], [Person_EmailAddress], [Person_Name], [Person_PhoneNumber], [Type], [IssueID], [CommentID], [AttachmentID], [RegionID], [OrganizationID], [IsHidden], [IsRead])
OUTPUT inserted.[ID] INTO @generated_keys
VALUES (@0, NULL, NULL, NULL, NULL, @1, @2, @3, @4, @5, @6, NULL, NULL, @7, @8, @9, @10)
SELECT t.[ID]
FROM @generated_keys AS g JOIN [dbo].[Notifications] AS t ON g.[ID] = t.[ID]
WHERE @@ROWCOUNT > 0

-- statement #25
commit transaction

Exception

Error: System.Data.Entity.Infrastructure.DbUpdateException: An error occurred while updating the entries. See the inner exception for details. ---> System.Data.Entity.Core.UpdateException: An error occurred while updating the entries. See the inner exception for details. ---> System.Data.SqlClient.SqlException: Execution 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.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.SqlCommand.InternalEndExecuteNonQuery(IAsyncResult asyncResult, String endMethod, Boolean isInternal) at System.Data.SqlClient.SqlCommand.EndExecuteNonQueryInternal(IAsyncResult asyncResult) at System.Data.SqlClient.SqlCommand.EndExecuteNonQueryAsync(IAsyncResult asyncResult) at System.Threading.Tasks.TaskFactory 1.FromAsyncCoreLogic(IAsyncResult iar, Func 2 endFunction, Action 1 endAction, Task 1 promise, Boolean requiresSynchronization) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Mapping.Update.Internal.DynamicUpdateCommand.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.d__0.MoveNext() --- End of inner exception stack trace --- at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Objects.ObjectContext.d__3d 1 promise, Boolean requiresSynchronization) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Mapping.Update.Internal.DynamicUpdateCommand.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.d__0.MoveNext() --- End of inner exception stack trace --- at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Objects.ObjectContext.d__3d 1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runt ime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Objects.ObjectContext.d__39.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.d__9 1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Objects.ObjectContext.d__31.MoveNext() --- End of inner exception stack trace --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Decos.Fixi.Data.FixiContext.d__80.MoveNext() in E:\\_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.Data\\FixiContext.cs:line 200 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Decos.Fixi.Data.FixiContext.d__80.MoveNext() in E:\\_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.Data\\FixiContext.cs:line 207 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Decos.Fixi.Data.Services.ServiceBase 1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Data.Entity.Core.Objects.ObjectContext.d__31.MoveNext() --- End of inner exception stack trace --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Decos.Fixi.Data.FixiContext.d__80.MoveNext() in E:\\_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.Data\\FixiContext.cs:line 200 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Decos.Fixi.Data.FixiContext.d__80.MoveNext() in E:\\_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.Data\\FixiContext.cs:line 207 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Decos.Fixi.Data.Services.ServiceBase 2.d__15.MoveNext() in E:_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.Data\\Services\\ServiceBase.cs:line 181 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerN otification(Task task) at Decos.Fixi.Data.Services.IssueService.d__19.MoveNext() in E:_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.Data\\Services\\IssueService.cs:line 277 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Decos.Fixi.WebApi.Controllers.IssuesController.d__20.MoveNext() in E:_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.WebApi\\Controllers\\IssuesController.cs:line 593 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Threading.Tasks.TaskHelpersExtensions.d__3`1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServi ces.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ApiControllerActionInvoker.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilter Attribute.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.R untime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ActionFilterResult.d__2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.AuthorizationFilterAttribute.d__2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Decos.Fixi.WebApi.Annotations.AuthenticateApplicationAttribute.d__8.MoveNext() in E:_work4\\10\\s\\Fixi2\\Main\\Decos.Fixi.Api\\Decos.Fixi.WebApi\\Annotations\\ApplicationAuthenticationAttribute.cs:line 108 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Controllers.AuthenticationFilterResult.d__0.MoveNext() --- End of stack trace from previous location where ex ception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ExceptionFilterResult.d__0.MoveNext()

Answer 1

Not sure what version of EF you're using, but regardless you need to set the command timeout. It defaults to 30 seconds so that won't work for you.

In EF 6, it was set like this: this.context.Database.CommandTimeout = 0; EF 5, something like this: ((IObjectContextAdapter)this.context).ObjectContext.CommandTimeout = 0; In EF core: this.context.Database.SetCommandTimeout(0);

The value is in seconds. If you set the value to 0, it's "unlimited". I'd say that's what you need.