Win32Exception 0x80004005 The wait operation timed out

Question

I m running an ASP NET Web Pages page that upon initial load pulls a list of items from a SQL server  This query runs in a second or so and loads the page within 2 seconds  The return is about a 1000 records  give or take  I m pulling Hostnames from a Service Manager SQL database along with some other information    Within this page  I have a search built in that essentially runs the exact same query but runs it with a LIKE based on hostname  This loads the same page with all hostnames that are contain part of the search query  The query generally runs within SQL Management Studio in under a second  but loading the page takes substantially longer and sometimes it times out    My question is  why does the parameter based search takes so much longer and sometimes timeout for no apparent reason  Are there any steps that can be taken to mitigate this timeout  Below is the full error   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    Line 13        Line 14       Line 15      var selectedData   db Query selectCommand  searchTerm   Line 16   Line 17   Source File   c  Users u0149920 Documents My Web Sites AppSupport servers default cshtml    Line   15   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 amp  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 amp  task  Boolean asyncWrite   1325    System Data SqlClient SqlCommand RunExecuteReader CommandBehavior cmdBehavior  RunBehavior runBehavior  Boolean returnStream  String method  TaskCompletionSource 1 completion  Int32 timeout  Task amp  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    12    WebMatrix Data  lt QueryInternal gt d  0 MoveNext    152    System Collections Generic List 1  ctor IEnumerable 1 collection   381    System Linq Enumerable ToList IEnumerable 1 source   58    WebMatrix Data Database Query String commandText  Object   parameters   103    ASP  Page servers default cshtml Execute   in c  Users u0149920 Documents My Web Sites AppSupport servers default cshtml 15    System Web WebPages WebPageBase ExecutePageHierarchy    197    System Web WebPages WebPage ExecutePageHierarchy IEnumerable 1 executors   69    System Web WebPages WebPage ExecutePageHierarchy    151    System Web WebPages WebPageBase ExecutePageHierarchy WebPageContext pageContext  TextWriter writer  WebPageRenderingBase startPage   76    System Web WebPages WebPageHttpHandler ProcessRequestInternal HttpContextBase httpContext   114     Version Information  Microsoft  NET Framework Version 4 0 30319  ASP NET Version 4 0 30319 17929

User · Answer

We encountered this error after an upgrade from 2008 to 2014 SQL Server where our some of our previous connection strings for local development had a Data Source=./ like this

        <add name="MyLocalDatabase" connectionString="Data Source=./;Initial Catalog=SomeCatalog;Integrated Security=SSPI;Application Name=MyApplication;"/>

Changing that from ./ to either (local) or localhost fixed the problem.

<add name="MyLocalDatabase" connectionString="Data Source=(local);Initial Catalog=SomeCatalog;Integrated Security=SSPI;Application Name=MyApplication;"/>

User · Answer

The problem you are having is the query command is taking too long  I believe that the default timeout for a query to execute is 15 seconds  You need to set the CommandTimeout  in seconds  so that it is long enough for the command to complete its execution   The  CommandTimeout  is different than the  Connection Timeout  in your connection string and must be set for each command   In your sql Selecting Event  use the command   e Command CommandTimeout   60   for example   Protected Sub SqlDataSource1 Selecting sender As Object  e As System Web UI WebControls SqlDataSourceSelectingEventArgs      e Command CommandTimeout   60 End Sub

User · Answer

I had the same issue  Running exec sp updatestats did work sometimes  but not always  I decided to use the NOLOCK statement in my queries to speed up the queries  Just add NOLOCK after your FROM clause  e g    SELECT clicks entryURL  clicks entryTime  sessions userID FROM sessions  clicks WITH  NOLOCK  WHERE sessions sessionID   clicks sessionID AND clicks entryTime  gt  DATEADD day  -1  GETDATE      Read the full article here

User · Answer

If you re using Entity Framework  you can extend the default timeout  to give a long-running query more time to complete  by doing   myDbContext Database CommandTimeout   300    Where myDbContext is your DbContext instance  and 300 is the timeout value in seconds    Syntax current as of Entity Framework 6

User · Answer

I had the same issue  and by Running  quot exec sp updatestats quot  the issue solved and works now

User · Answer

In our case we were able to narrow the cause down to a number of views which had WITH SCHEMABINDING on them  Although this is supposed to improve performance it was resulting in an awful query plan  doing a single record update on a table which was being referenced by these views was taking nearly 2 seconds of elapsed time   Removing WITH SCHEMABINDING has meant all is running smoothly again and the  quot wait operation timed out quot  errors have gone

User · Answer

I tried the other answers here as well as a few others  I even stopped and restarted the SQL services  Nothing worked   However  restarting my computer did work

User · Answer

Look into re-indexing tables in your database   You can first find out the fragmentation level - and if it s above 10  or so you could benefit from re-indexing  If it s very high it s likely this is creating a significant performance bottle neck   http   blog sqlauthority com 2009 01 30 sql-server-2008-2005-rebuild-every-index-of-all-tables-of-database-rebuild-index-with-fillfactor   This should be done regularly

User · Answer

To all those who know more than me  rather than marking it unhelpful or misleading  read it one more time  I had issues with my Virtual Machine  VM  becoming unresponsive due to all resources being consumed by locked threads  so killing threads is the only option I had  I am not recommending this to anyone who are running long queries but may help to those who are stuck with unresponsive VM or something  Its up-to individuals to take the call  Yes it will kill your query but it saved my VM machine being destroyed   Serverstack already answered similar question  It solved my issue with SQL on VM machine  Please check here  You need to run following command to fix issues with indexes   exec sp updatestats

User · Answer

EfCore version of  JonSchneider s answer myDbContext Database SetCommandTimeout 999    Where myDbContext is your DbContext instance  and 999 is the timeout value in seconds   Syntax current as of Entity Framework Core 3 1

User · Answer

My Table didn t have primary key then I had time out error  after set key sloved

[sql-server-2008] Win32Exception (0x80004005): The wait operation timed out

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