A roughie (assuming your stats are up to date) would
be
select sum(num_rows * avg_row_len) * 1.1
from dba_tables
where owner in ( list to be exported )
added to
select sum(length(text))
from dba_source
where owner in ( list to be exported )
This doesn't take into account many things (view text,
lobs etc etc) but it gets you started...
hth
connor
--- "Danisment Gazi Unal (Unal Bilisim)"
<[EMAIL PROTECTED]> wrote: > Hello,
>
> Yes you can. see
>
http://www.unal-bilisim.com/qa/discus/messages/20/42.html?9923410
> for Unix.
>
> I don't know NT. But, pipe mechanism is generic
> mechanism for Operating Systems
> Theory. There should be a way for NT to create
> pipes. By pipes, you can
> calculate.
>
> regards...
>
> "O'Neill, Sean" wrote:
>
> > Is there some way to calculate or make a realistic
> guestimate as to what
> > size an Export dump file will be for a given
> schema or indeed a whole
> > database. I've not come across anything on this
> topic before. If result is
> > dependant on O.S. I'm particularily interested in
> NT/W2K O.S.
> >
> > Sean :)
> >
> > Rookie Data Base Administrator
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