# Slow Speed - Statistics?

**URL:** <https://forums.toadworld.com/t/slow-speed-statistics/9368>\
**Category:** Toad for Oracle & DevOps Toolkit\
**Created:** [March 22, 2010, 3:21pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368 "2010-03-22T15:21:47Z")\
**Posts on this page:** 6\
**Page:** 2

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**Author:** ![Bert\_Scalzo](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/bert_scalzo/32/274_2.png) [@Bert\_Scalzo](https://forums.toadworld.com/u/Bert_Scalzo)\
**Post date:** [March 24, 2010, 3:51pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368/21 "2010-03-24T15:51:04Z")

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Not true – Oracle offers “plan stability” feature to cover  
this – where database will never allow an explain plan to be worse than  
the prior one – and will replace the current good one if the new one would  
be faster. This can be done manually in 10g – but it can be set to full  
auto in 11g. So there are no surprises J

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**Author:** ![HillbillyToad](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/hillbillytoad/32/190_2.png) [@HillbillyToad](https://forums.toadworld.com/u/HillbillyToad)\
**Post date:** [March 24, 2010, 3:54pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368/22 "2010-03-24T15:54:01Z")

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That’s Oracle’s opinion on what a better or worse plan is? And is  
that based on Cost?

Sounds like in 10g it’s not in play by default?

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**Author:** ![Guest](https://avatars.discourse-cdn.com/v4/letter/g/8dc957/32.png) [@Guest](https://forums.toadworld.com/u/Guest)\
**Post date:** [March 24, 2010, 4:10pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368/23 "2010-03-24T16:10:13Z")

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> > tuning\_whimsy\_factor setting

Heh, I love it! I want that setting!

RAS

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<div class="post-metadata">

**Author:** ![Bert\_Scalzo](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/bert_scalzo/32/274_2.png) [@Bert\_Scalzo](https://forums.toadworld.com/u/Bert_Scalzo)\
**Post date:** [March 24, 2010, 4:35pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368/24 "2010-03-24T16:35:26Z")

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I’ve tested this feature – and it works quite well. In general (not  
always of course), it improves performance by 20% or more than not using it.

And as for Oracle opinion – since it’s their optimizer and their  
logic that decides – yes, I trust them on this issue. Why oppose something  
that works. It’s new, you have to pay for this. But it’s nearly  
universally a positive net result …

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**Author:** ![MGainty](https://avatars.discourse-cdn.com/v4/letter/m/a5b964/32.png) [@MGainty](https://forums.toadworld.com/u/MGainty)\
**Post date:** [March 24, 2010, 4:43pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368/25 "2010-03-24T16:43:54Z")

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wait a minute roger

the economy is in the W. C…(there is an american version of that term but I’ll  
use W.C. to be polite)  
republican Scott Brown is fillibustering Americans ONLY hope to acquire health  
insurance

so …what is there to be happy about???  
Martin Gainty

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Vertraulichkeitanmerkung/Note de déni et de confidentialité

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<div class="post-metadata">

**Author:** ![Guest](https://avatars.discourse-cdn.com/v4/letter/g/8dc957/32.png) [@Guest](https://forums.toadworld.com/u/Guest)\
**Post date:** [March 24, 2010, 5:03pm UTC](https://forums.toadworld.com/t/slow-speed-statistics/9368/26 "2010-03-24T17:03:35Z")

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> > the economy is in the W. C.. … Americans ONLY hope … what is  
> > there to be happy about???

Must be Friday… I know there’s a joke in there somewhere but  
it’s lost on me… probably because I’m Canadian 😉

RAS

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