Waddya mean, propaganda sheets?  We never release propaganda - everything always works 
the way we say it does!  :)

 
Pete
 
"Controlling developers is like herding cats."
Kevin Loney, Oracle DBA Handbook
 
"Oh no, it's not.  It's much harder than that!"
Bruce Pihlamae, long-term Oracle DBA

-----Original Message-----
Sent: Friday, 9 January 2004 5:49 AM
To: Multiple recipients of list ORACLE-L

Right Jared,

But this is where the new 'learning CBO' comes into picture isn't it? in 10g CBO looks 
at the history and then modified the execution plans.

This is all from Oracle 10g propaganda sheets, I'll agree when I see it in action.

Raj
--------------------------------------------------------------------------------
Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
QOTD: Any clod can have facts, having an opinion is an art !


-----Original Message-----
Sent: Thursday, January 08, 2004 1:40 PM
To: Multiple recipients of list ORACLE-L


> Me thinks CBO is probably never going to be bug free. 
> What works for you, won't work for me unless we run
> identical systems, it is a general purpose system, 
> CBO doesn't know your system or data usage. 

At this point it would seem beneficial to differentiate between a
bug and a logic error.

Roughly, a bug would seem to be code that falls into one of 
two categories:

* code that doesn't do what the developer intended
* code that generates errors 

A logic error would be found in code that does exactly what
the developer intended, but what the developer intended is
the wrong thing to do.

This could be expanded to include the inability of CBO to 
properly identify a usage pattern.

just my opinion.

Jared
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