MSSQL2000 Slow Performance Over VPN

Feb 11, 2007

Hi,
I'm executing a stored procedure in my local LAN which executes another one in a loop and I update a Table. The number of loops is about 6300.
This operation takes about 25 seconds in my local LAN.
Then I try to execute though in a VPN which has an upload speed of 256 kbps. I open query analyser connect to the remote server which is must faster than mine and I just write exec mystoredprocname in order to execute the procedure. The performance is very very slow.
In 7 minutes 180 loops are completed out or 6300.
I really cannot understand this. What is the reason of such slow perfomance?? My ADSL model displays no activity when the procedure is executed. I just use the PRINT method in MSSQL in order to display the progress of the operation. I tried to comment it out but with no difference.
I also use SET NOCOUNT ON in order not to display the update results.

Can someone explain me the cause for this? Are there some tricks in order to improve the performance when a slow connection is used like a ADSL with a static IP? It seems that something wrong is happening here.

Best Regards,
Manolis Perrakis

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I'm still new to SQL Server so some of my lingo/verbage may be incorrect, please bare with me.

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Sorry I wrote a book.
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Hi.

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DECLARE @num int
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Hi All

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Hi all,

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SQl server 2005 version: Microsoft SQL Server 2005 - 9.00.3054.00 (Intel X86) Mar 23 2007 16:28:52 Copyright (c) 1988-2005 Microsoft Corporation Developer Edition on Windows NT 6.0 (Build 6000: ) .

Our customer has a SQL Server 2005 installed on a machine running Windows Vista.

Our application is running on a XP machine and on the Vista machine and its connected to the SQL server running on Windows Vista.
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If, instead, she runs the same query from the Vista machine it takes more than 5 minutes!!
This problem happens on every Vista machine.

We even installed the SQL Server 2005 on Windows Server 2003 but every time our application is run from a Vista machine this delay occurs.

The problem doesn't seem to be SQL SERver 2005 related because when we run from the XP machine everything is ok.
Maybe there is some problem with ADO (I even tested with the SQLNCLI provider: same bad results) or Vista...

We really need to solve this problem; the number of customers complaining about this behavior on Vista is growing.


NOTE: The LastUpdated column holds date + time info so we can't ignore the time part! I know, I know, bad design...

Thanks for your help.

P.S.:
We have just received another report from a customer that is running SQL Server 2000 on a Windows Server 2003 machine and using two machines (one Vista, one XP) to connect to the database.
Same behavior. Running the sql statement from the XP machine takes 3 to 6 seconds; on the Vista machine takes more than 5 minutes...

Thanks..
J.C.

Sample code:
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Set rsData = New adodb.Recordset
rsData.CursorLocation = adUseClient
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