"..increasing the buffer hit ratio from 95 to 99
percent can yield performance gains of over 400
percent" 

"Retrieving data from memory is over 10000 times
faster than retrieving it from disk" 

"A more efficient method is to have the database write
to the redo logs only when all the log buffers are
filled or when a commit is issued. This happens when
log_checkpoint_interval is set to zero" 

"This allowed the O/S to dedicate a specific
background process to moving the log buffers upon
checkpoint to the redo files" 

"At times, specifying multiple hints can mysteriously
cause the query to use none of the hints" 

"The INDEX_DESC hint causes indexes to be sorted in
descending order...This index is overwritten when the
query has multiple tables" 

Cheers
Connor

 --- "Freeman, Robert " <[EMAIL PROTECTED]>
wrote: > Ok... one of my favorite Urban Legends is
this one:
> 
> The book is always right. In other words, if it's
> written down
> in a book we bought off of Amazon, it must be so.
> 
> So, I'd like to ask, without anyone taking potshots
> at
> specific authors, what is the dumbest, silliest, or
> most
> technically incorrect thing you have ever seen in an
> 
> Oracle book?
> 
> RF
> 
> Robert G. Freeman - Oracle8i OCP
> Oracle DBA Technical Lead
> CSX Midtier Database Administration
> 
> The Cigarette Smoking Man: Anyone who can appease a
> man's conscience can
> take his freedom away from him.
> 
> 
> -- 
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> -- 
> Author: Freeman, Robert 
>   INET: [EMAIL PROTECTED]
> 
> Fat City Network Services    -- (858) 538-5051  FAX:
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=====
Connor McDonald
http://www.oracledba.co.uk (mirrored at 
http://www.oradba.freeserve.co.uk)

"Some days you're the pigeon, some days you're the statue"

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