Asp mysql

Hi all
I have a web site on IIS and I use ASP as server side
MYSQL is the database where I store informations.
During these last days when I check log files I find a lot of errors in some pages like the following:

Number=-2146827781
"An_exception_occurred:_'rs.Open"

These errors happen when a query has to be executed, but the syntax of query is correct because when I load the pages, in which it seems to be errors, sometimes I get error and sometimes not.

I also want to inform you that these errors happen since when in the database connection string I put as ODBC driver 5.1 (which has been installed in the meantime in the server)instead of ODBC 3.51

I know that my information can be strange but can you help me?

Thanks in advance

If I am not wrong
An_exception_occurred:_'rs.Open' has the error code 800A01FB.

So check out this link
http://www.aspfaq.com/show.asp?id=2327

Hi, I've got the very same problem.
Here's the problem:
Our classic asp site on IIS6 connects to a mysql database on a linux server using MySQL Connector/ODBC 5.1.5.
It's a high traffic site and everything runs pretty smootly most of the time.
However, sporadically I'm getting errors when connecting to the database.

Connecting via either a connection string such as Driver={MySQL ODBC 3.51 Driver} or a DSN set up in the ODBC settings does not make a difference.

The error that pops up in the scripts is the ominous
asp error -2146827781:
An exception occured "myconn.OPEN"

On mysql the error is :
Aborted connection 887 to db: abc user:
abc host: 123.456.789.1232 (Got an error reading communication
packets)

After some searching for proper settings we've set the following to be changed from the default settings:
In mysql:
max_allowed_packet is 128MB from the default 8MB as suggested per http://themattreid.com/wordpress/?p=15

On Windows:
we've increased the tcp/ip ephemeral port range of windows to the maximum from the usual 5000.

We tried all the fitting suggestion on http://dev.mysql.com/doc/refman/5.1/en/
communication-errors.html without a proper result.
The error returned again and again.