Re: Out of memory error on huge resultset

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От Michael Paesold
Тема Re: Out of memory error on huge resultset
Дата
Msg-id 00e601c27134$b9260570$4201a8c0@beeblebrox
обсуждение исходный текст
Ответ на Re: Out of memory error on huge resultset  (Aaron Mulder <ammulder@alumni.princeton.edu>)
Ответы Re: Out of memory error on huge resultset  (Dave Cramer <Dave@micro-automation.net>)
Список pgsql-jdbc
Dave Cramer <Dave@micro-automation.net> wrote:

> No disadvantage, in fact that is what we would like to do.
>
>
> setFetchSize(size)  turns on cursor support, otherwise fetch normally
>
> Dave
>
> On Fri, 2002-10-11 at 10:30, Aaron Mulder wrote:
> > What would be the disadvantage of making the JDBC driver use a
> > cursor under the covers (always)?  Is it significantly slower or more
> > resource-intensive than fetching all the data at once?  Certainly it
seems
> > like it would save memory in some cases.
> >
> > Aaron

Well, using a cursor based result set *always* is not going to work. Cursors
will not be held over a commit, whereas a buffer result set will. So the
setFetchSize..

Regards,
Michael Paesold


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