Re: confused about transactions and connection pools

On 30-Oct-06, at 5:25 PM, Tom Lane wrote:

> Kris Jurka <books@ejurka.com> writes:
>> For each connection the statements BEGIN, ROLLBACK, and COMMIT are
>> only
>> prepared once and after that they are executed again and again.
>> This can
>> be very confusing when looking at the logs which only show the
>> preparation
>> step, but not execution.  So even though you can't see them,
>> they're being
>> executed.  The 8.2 release will be the first release that can
>> accurately
>> log this usage pattern.
>
> BTW, have you verified that it's actually worth the trouble to prepare
> these commands?  Given that there's no planning cost for a utility
> statement, and hardly any parsing cost for one-word commands, I'm a
> bit
> dubious that the prepared-statement machinery actually results in a
> win
> compared to just issuing simple Query messages.

Yeah, the driver needs to be taught to not prepare *everything* in v3
mode

Dave
>
>             regards, tom lane
>
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