How to solve TimeOut Expired Problem?

Using SQL Server 2005 and VB6

When I executing for yearly data or more than 3 months' data, it is showing "Timeout Expired" error. It is not executing completely.

My Connection String

ConnectionString = "Provider=SQLOLEDB.1;" & _
    "Persist Security Info=False; " & _
    "User ID=" & Settings.SQL_Username & _
    "; Password = " & Settings.SQL_Password & "; " & _
    "Initial Catalog=" & Settings.SQL_DatabaseName & ";" & _
    "Data Source=" & Settings.SQL_ServerAddress

How do I solve this problem?


13.10.2009 14:54:44
Can you show the query you are running? Often times there are simple changes that can be made to a query that improves performance. Obviously, if you make the query faster, you won't need to worry about timeouts.
George Mastros 14.10.2009 16:00:28

There's no "black voodoo magic" out there - either you can make your query go faster (return less data, improve the database design, find and apply indices that make your queries execute faster), or then increase the timeout you allow the query to run before a timeout is thrown.

Those are your two options - take your pick.

UPDATE: a little googling reveals:

Dim cmd
Set cmd = Server.CreateObject("ADODB.Command")
cmd.CommandTimeout = 120   ' number of seconds


13.10.2009 16:07:00
In ConnectionString Itself i have to give the timeout or select from the database. Where I have to mentioned the timeout. Plz
Gopal 13.10.2009 15:19:53
You cannot solve this in your connection string. Work on fixing the query (optimizing) and take the above advice and add a CommandTimeout value.
marcc 13.10.2009 16:12:55

Obviously you are trying to bring up a lot of data, and your database is taking a lot of time doing this. Post your connection string so I can tell you what parameter to change so you can increase the connection time out.

Or you can try to optimize your app, it should take that long to bring up data.

13.10.2009 14:57:59
I Posted My connection String.
Gopal 13.10.2009 15:27:56
the connection timeout is unlikely to be the problem - the connection seems to be in place, but the command issued then times out. You need to set the .CommandTimeout property - and that's not on the connection string
marc_s 13.10.2009 16:08:13

I would guess you're either trying to pull back a lot of data and it's taking SQL Server more than the default ADO timeout (either 30 or 40 seconds?) to pull that data back.

Or it's not really a lot of data, but you've not got a decent index on the table - so I'd check the indexes against your query (execution plan is your friend here).

Or it's a mix of both.

How long does the query take if you run it direct in SQL Management Studio?

13.10.2009 15:00:06

You have to set .CommandTimeout on the command. It doesn't work if you set it in the connection string.

13.10.2009 16:11:55