See the paper 'How to Stop Defragmenting and Start Living'
It has some good methods for determining rebuild candidates.
It's available from several sources, metalink, orapub.com.
Try a search on google.com as well.
Jared
"Fowler, Kenneth R" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
03/13/02 12:51 PM
Please respond to ORACLE-L
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Subject: Determine if an index needs to be rebuilt... how do I?
Hi,
I want to automate index rebuilds on some databases I administer. They
are
all Oracle 8.1.6 and 8.1.7 on Solaris 2.6 thru 2.8. I want to use
"analyze
index...validate structure" and then look at the index_stats view to
determine what shape a given index is in.
My question... for people who use this method, what selection criteria do
you use on the index_stats view to make the decision to rebuild... or not
to
rebuild the particular index???
My aim would be to use such a selection criteria and limit the rebuilds to
just a few each night... until at some point they are all done. After
that
I would run say once a week just to pick on indexes as they become
fragmented and skewed etc etc.
Thanks,
Ken
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