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SQL Server Timeout Issue

Posted on 2011-03-03
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Last Modified: 2012-06-22
I am trying to debug an app on my machine which is running Windows 7 64, MS SQL 2008 Developer Edition and Visual Studio 2008.

When I try to make a connection through VB to the SQL database I kept getting a timeout error.  After trying a number of things I then tried to make an ODBC connection to the SQL DB and got the same timeout error - HYT00.

I have checked that all SQL and associated services are running, "Shared Memory", "TCP/IP" and "Named Pipes" are all enabled but I am out of ideas.  I have tried calling the machine by its name, its IP address and '.' none of which make any difference.

I use SQL Server authentication to log into my DB and am happily able to log in and to work on my db through SQL Management Studio using the same login I am trying for ODBC.

Any ideas?

Thanks
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Question by:mkalmek
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13 Comments
 
LVL 11

Expert Comment

by:rajvja
ID: 35024995
Hi

Can you try configuring a data source in design view and check the Test Connection. If succeeds, try to copy the connectionstring and use the same in your application.
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Expert Comment

by:mayank_joshi
ID: 35025007
Within ADO, the developer can set:

   1. connection timeout (default 15 seconds)
        if the connection cannot be established within the timeframe specified
   2. command timeout (default 30 seconds)
        cancellation of the executing command for the connection if it does not respond within the specified time.


These properties also support a value of zero, representing an indefinite wait.

Here is some example code:

Dim MyConnection as ADODB.Connection

Set MyConnection = New ADODB.Connection

MyConnection.ConnectionTimeout = 90

MyConnection.Open

Set MyConnection = New ADODB.Connection 
 ' set strMyConn

MyConnection.Open strMyConn

Set myCommand = New ADODB.Command

Set myCommand.ActiveConnection = MyConnection

myCommand.CommandTimeout = 90

Open in new window

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Expert Comment

by:mayank_joshi
ID: 35025041
you also try changing the request time out in page by:-

  Server.ScriptTimeout = 1800 ' in seconds 

Open in new window


on page load.
       
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Expert Comment

by:mayank_joshi
ID: 35025047
following article may be helpful:-

http://vyaskn.tripod.com/watch_your_timeouts.htm
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Expert Comment

by:mayank_joshi
ID: 35025054
another artilce which may be helpful:-

http://vyaskn.tripod.com/sql_odbc_timeout_expired.htm
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Expert Comment

by:rajvja
ID: 35025485
Hi,

  Increasing the timeout is not good solution. Try to find the reason for timeout.
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Expert Comment

by:lozzamoore
ID: 35025501
A nice approach I use a lot is to create a new txt file on your desktop, and once it is created, replace the txt extension with udl.

You can then double click this udl file, and create your connection properties using the familiar wizard.

Hopefully you can play around with all of the providers listed etc, and other connection properties until your connection is successful.

If you then save and re-open the udl file in a text editor, it will show you the connectionstring you need to use within VS.

If you can't connect using any of the providers, then you definitely have something configured wrong in server configuration manager.

I hope this helps.

L
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Expert Comment

by:mayank_joshi
ID: 35025604
rajvja, i know that increasing the time out is not a good solution
but sometimes in case of large database, heavy operations or slow network
it can be changed  for a particular task to suit our requirements.

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Expert Comment

by:lozzamoore
ID: 35025609
I'm assuming as this is a local copy of SQL/VS, that slow network/heavy usage is not an issue....
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Author Comment

by:mkalmek
ID: 35031449
Everything is local, there is no network or heavy usage and the db is very small.  I have tried fiddling with the timeout anyway but it makes no difference
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Author Comment

by:mkalmek
ID: 35031509
Tried the .udl method, but I get the same timeout when trying to select the db
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Accepted Solution

by:
lozzamoore earned 500 total points
ID: 35034975
Is this using ODBC still?

Just out of interest, why do you want to use ODBC? It is quite an old protocol.

Does the UDL connection still time-out if you pick the MS OLE DB Provider for SQL Server?

Thanks,
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LVL 7

Expert Comment

by:lozzamoore
ID: 35035128
It may also be worth downloading the latest OleDB and ODBC Drivers for SQL 2008 from here:

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=c6c3e9ef-ba29-4a43-8d69-a2bed18fe73c

Regards,
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