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Home -> Community -> Mailing Lists -> Oracle-L -> Fw: Oracle position on hints

Fw: Oracle position on hints

From: Tim Gorman <Tim_at_SageLogix.com>
Date: Mon, 10 Mar 2003 11:40:25 -0800
Message-ID: <F001.00564FB7.20030310114025@fatcity.com>


Connor,

Don't let them bug you about doing email on your wedding day. Now that the day is past, you've probably realized that if the wedding was a movie, you'd get billing somewhere after "Key Grip" and "Assistant to the Assistant Deputy Director of Props". So, on the movie marquee of your wedding, it would read something like:

    Bride

    Bride's Mother
    Bride's Father
    Groom's Mother
    Groom's Father

    Maid of Honor
    Flower Girl
    Bride's Maternal Grandmother (if still aboveground)     Bride's Paternal Grandmother (if still aboveground and in good graces with maternal grandmother and mother)

    ...
    Groom (somewhere around 20th position)     ...
    Best Man (probably edited out, for good reason after his behavior at the bachelor party)

    ...
    Other guests

So, don't feel bad, enjoy the food and beverages, and just remember to keep smiling and say "Yes dear", especially if you don't understand. :-) This may sound like cynicism, but I really believe that bliss comes with full disclosure and acceptance, despite what politicians and media moguls think.

Happily married 16 years and counting...

-Tim

> Congratulations Connor. May the day exceed all your expectations. If you
> figure out how to attach a piece of cake to an email, send me one. :-)
> --
> Chuck
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Saturday, March 08, 2003 8:53 PM
>
>
> > Just to add my meaningless diatribe to the discussion,
> > I think that there are "good" hints and "bad" hints.
> >
> > For example, first_rows(n) is a good hint, in that you
> > are giving the optimizer more information as to what
> > your motivations are for this query, without stifling
> > it into a choice that may not be appropriate down the
> > track.
> >
> > Hints such as index(tab,idx) are "bad" hints, because
> > you are more exposed to grief. If the index is
> > renamed, then its no longer a hint. If the data
> > distribution changes, or the index is rebuilt in
> > reverse or compressed, then it may no longer be a good
> > option, etc.
> >
> > In terms of the vendor speak of "hints imply weak
> > optimizer" I think thats nonsense. Having worked with
> > DB2 in the past, nothing used to be more irritating
> > then coming up with bizarre convolutions on an
> > otherwise simple SQL to ensure that certain indexes
> > were or were not chosen.
> >
> > Cheers
> > Connor
> >
> > PS - Its probably a little sad that I'm chit-chatting
> > on hints on the morning of my wedding day, but hey,
> > you gotta pass the time somehow whilst the other half
> > is getting the hair and makeup done :-)
> >
> >
> >
> > --- "Khedr, Waleed" <Waleed.Khedr_at_FMR.COM> wrote: >
> > It's like the Auto-pilot
> > >
> > > -----Original Message-----
> > > To: Multiple recipients of list ORACLE-L
> > > Sent: 3/8/03 2:13 PM
> > >
> > > Stephane
> > > I don't see how Oracle could ever have an
> > > official position on hints.
> > > If
> > > they say hints are going away, many developers
> > > panic. If they say hints
> > > are
> > > great, then Oracle competitors will claim Oracle has
> > > a bad optimizer.
> > > A key political issue in some shops is "Using
> > > hints makes our code
> > > Oracle-specific". My reply is that hints are only
> > > comments that another
> > > database will ignore.
> > >
> > > Dennis Williams
> > > DBA, 40%OCP, 100% DBA
> > > Lifetouch, Inc.
> > > dwilliams_at_lifetouch.com
> > >
> > >
> > > -----Original Message-----
> > > Sent: Friday, March 07, 2003 12:19 PM
> > > To: Multiple recipients of list ORACLE-L
> > >
> > >
> > > Hi,
> > >
> > > I have to write a SQL and PL/SQL guide for our
> > > developpers.
> > > Some are good but most of them can use help.
> > >
> > > I'm not a big fan of hints except for insert append,
> > > I used them only if
> > > I
> > > really need to.
> > >
> > > In last october I went to a 3 days DB2 UDB course,
> > > unless I miss
> > > something
> > > there are no hint with DB2 UDB.
> > > So I was thinking that when the Oracle optimiser
> > > would be more mature
> > > maybe
> > > hints would go away.
> > >
> > > I just want to know what is Oracle direction with
> > > hints.
> > >
> > > TIA
> > >
> > > Stephane
> > >
> > >
> > > -----Original Message-----
> > > Robert - IL
> > > Sent: Friday, March 07, 2003 12:01 PM
> > > To: Multiple recipients of list ORACLE-L
> > >
> > >
> > > This is facinating, where does this come from? This
> > > is the second time
> > > in a
> > > week that I've heard this statement being made by
> > > someone. Hints will
> > > never
> > > go away IMHO, and Oracle continues to add more and
> > > more of them. I was
> > > told
> > > by someone at a client site that they were told by
> > > an Oracle instructor
> > > that
> > > they should not use hints in 9i....
> > >
> > > RF
> > >
> > > -----Original Message-----
> > > To: Multiple recipients of list ORACLE-L
> > > Sent: 3/7/2003 10:04 AM
> > >
> > > Hi,
> > >
> > > Does Oracle have an official position on hints ?
> > > Will they go away as the optimiser is becoming
> > > bettre or they are there
> > > to stay ?
> > >
> > > TIA
> > >
> > >
> > >
> > > Stephane Paquette
> > >
> > >
> > > Administrateur de bases de donnees
> > >
> > > Database Administrator
> > >
> > > Standard Life
> > >
> > > www.standardlife.ca
> > >
> > > TÚl. (514) 925-7187
> > >
> > > stephane.paquette_at_standardlife.ca
> > > <mailto:stephane.paquette_at_standardlife.ca>
> > >
> > >
> > > --
> > > Please see the official ORACLE-L FAQ:
> > > http://www.orafaq.net
> > > --
> > > Author: Freeman Robert - IL
> > > INET: FREEMANR_at_tusc.com
> > >
> > > Fat City Network Services -- 858-538-5051
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> > > Author: Stephane Paquette
> > > INET: stephane.paquette_at_standardlife.ca
> > >
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> > > Author: DENNIS WILLIAMS
> > > INET: DWILLIAMS_at_LIFETOUCH.COM
> > >
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> > > --
> > > Author: Khedr, Waleed
> > > INET: Waleed.Khedr_at_FMR.COM
> > >
> > > Fat City Network Services -- 858-538-5051
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> > >
> >
> > =====
> > Connor McDonald
> > web: http://www.oracledba.co.uk
> > web: http://www.oaktable.net
> > email: connor_mcdonald_at_yahoo.com
> >
> > "GIVE a man a fish and he will eat for a day. But TEACH him how to fish,
> and...he will sit in a boat and drink beer all day"
> >
> > __________________________________________________
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> > Author: =?iso-8859-1?q?Connor=20McDonald?=
> > INET: hamcdc_at_yahoo.co.uk
> >
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>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Chuck Hamilton
> INET: chuckh_at_softhome.net
>
> Fat City Network Services -- 858-538-5051 http://www.fatcity.com
> San Diego, California -- Mailing list and web hosting services
> ---------------------------------------------------------------------
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>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Tim Gorman
  INET: Tim_at_SageLogix.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
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To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
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also send the HELP command for other information (like subscribing).
Received on Mon Mar 10 2003 - 13:40:25 CST

Original text of this message

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