Daniel Aut wrote:

> i could do a close connection after every commit, and a open conn before
> beginning transaction, but in this way, the application will be slower.
>
> What do you think?

I do it all the time. It isn't that much slower. Try it, and see if it
fits your users' definition of "slow".

--
Milan Babuskov
http://fbexport.sourceforge.net