Re: Plea for Query Tuning Help

  • From: "Norman Dunbar" <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx>
  • To: <salem.ghassan@xxxxxxxxx>
  • Date: Wed, 13 Sep 2006 08:49:40 +0100

Morning "Ghassan Salem",

>> "Ghassan Salem" <salem.ghassan@xxxxxxxxx> 09/13/06 08:45am >>>
>> if you use the "view" several times in the query, CBO can decide to
>> materialize it, without the hint.

Thanks for that. One question - and I'm nit picking here - where you
say 'CBO can decide' do you mean it 'will always' or 'might' ?

In the latter case the hint would probably be benficial, in the former,
the hint os obviously redundant.

I'm asking because (a) I don't know and (b) I'm too lazy to look it up
at the moment :o)


Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.

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