What about your HASH_AREA_SIZE - did you whack it up ?
"Ryan Gaffuri" <rgaffuri_at_cox.net> wrote in message
news:1efdad5b.0305060635.7ae5d104_at_posting.google.com...
> "Telemachus" <telemachus_at_ulysseswillreturn.net> wrote in message
news:<_TLta.12006$pK2.15734_at_news.indigo.ie>...
> > Snippety Snip
> >
> > It only works when there's NOT NULL constraints... not a condition...
> >
> > i.e. where <X> is not null in the query will not get the HJ to work.
it
> > must be a constraint.
> >
> > It's one of the <few> constraint-based optimizations. It used to be
> > documented in 7.3 manuals but it's now left out for some reason.
> >
> > Otherwise you tend to get a nasty FILTER operation
>
> its actually the to_char that was getting in the way. Took that out
> and it worked. Very small performance improvement unfortunately. Only
> 5%. Blah... hate when that happens.
Received on Tue May 06 2003 - 10:54:15 CDT
