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MySQL Connector/ODBC 3.51.14 is available!

MySQL Connector/ODBC 3.51.14 is available!

2007-03-16       - By Jim Winstead

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On Wed, Mar 14, 2007 at 11:24:50AM +0000, f.n.cristovao@(protected) wrote:
> In the DSN configuration dialog, Advanced page, we can see the
> option to enable auto reconnet and its tooltip mentions "it is strongly
> not recommended to set this flag for transactional operations!".
>
> Can you shed some light on this subject?
> Are there any articles describing case scenarios for transction disaster?

I'm not aware of any examples, but it is fairly simple -- if you have
'auto-reconnect' enabled, and are using transactions, and your
connection does an auto-reconnect in the middle of a transaction, you
will be operating in a state where part of your transaction has actually
been rolled back, and you will be doing part of your work in either a
new transaction, or with autocommit suddenly enabled.

So don't use it, and add proper error handling to your application to
deal with being unexpectedly disconnected.

Jim Winstead
MySQL Inc.

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