Solved

Time out in a SQL Query VB.NET

Posted on 2011-09-17
8
316 Views
Last Modified: 2012-05-12
Hi all,

Im getting the following message when updating records on a SQL Server:

Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.

The code is very simple:

Dim cadena2 As String = "update available_mills set status=1 where id=99 and location=@f3"
Dim cmd2 As New SqlCommand(cadena2, con2)
cmd2.CommandType = CommandType.Text
cmd2.Parameters.AddWithValue("@f3", F3)
cmd2.ExecuteNonQuery()

This updates about 4000 records every hour

Thanks!
0
Comment
Question by:pvg1975
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
8 Comments
 
LVL 15

Expert Comment

by:Haris Djulic
ID: 36554544
set connection timeout to max

con2.timeout=0 this will be no time out
0
 

Author Comment

by:pvg1975
ID: 36554559
Im getting

Error      1      'timeout' is not a member of 'System.Data.SqlClient.SqlConnection'.

When using con2.timeout=0
0
 

Author Comment

by:pvg1975
ID: 36554589
I used this:

con2.CreateCommand.CommandTimeout = 0

And it seems to work. Am I doing it right? or createcommand is for something else?

Thanks!
0
Ransomware: The New Cyber Threat & How to Stop It

This infographic explains ransomware, type of malware that blocks access to your files or your systems and holds them hostage until a ransom is paid. It also examines the different types of ransomware and explains what you can do to thwart this sinister online threat.  

 
LVL 15

Accepted Solution

by:
Haris Djulic earned 250 total points
ID: 36554755
it is beter to use the timeout with the command since:

SqlCommand.CommandTimeout = timeout limit for your SQL query. Means, how much time a (eg: SELECT, UPDATE) query can take for its execution. If it exceeds SqlCommand.CommandTimeout, then it stops execution. A command timeout error will occur.

SqlConnection.ConnectionTimeout = timeout limit for your connection. Means, how much time your connection object can try to connect. If it exceeds the specified time, it stops connecting. A connection timeout error will occur.

you can use it like that

cmd2.CommandTimeout =0
0
 

Author Comment

by:pvg1975
ID: 36554888
Thanks, i tried it but i get an error. I will paste the error once im back home. Thanks.
0
 
LVL 7

Expert Comment

by:Kishan Zunjare
ID: 36555928
A sqlConnection has a ConnectionTimeout property. It  is a property which determines the maximum number of seconds your code will wait for a connection to the database to open. It is set in the connectionstring to the database

data source=BROCHIS;initial catalog=Indato;integrated security=SSPI;Connect Timeout=60;

Opening the connection does not do anything in the database yet. That is handled by a SqlCommand, By default this is 30 seconds. When you perform something costly in the database this is the one whose value you’ll have to change.

SqlCommand cmd;

cmd.CommandTimeout = 60;

Hope this will work...
0
 
LVL 75

Assisted Solution

by:Anthony Perkins
Anthony Perkins earned 250 total points
ID: 36556778
There is simply no reason to increase the CommandTimeout (let alone set it to 0-Infinte) for such a simple UPDATE.  All you need to do is optimize your query.

Do you have an index on id, location?
0
 

Author Closing Comment

by:pvg1975
ID: 36556815
That worked perfect. I also optimized the table and added an index to the ID field. Thanks guys!
0

Featured Post

SharePoint Admin?

Enable Your Employees To Focus On The Core With Intuitive Onscreen Guidance That is With You At The Moment of Need.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hi all, It is important and often overlooked to understand “Database properties”. Often we see questions about "log files" or "where is the database" and one of the easiest ways to get general information about your database is to use “Database p…
In this article I will describe the Detach & Attach method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

628 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question