Chuck,

I've been convinced that rebuilding indexes is a waste of time.

In fact, it can cost you time, as rebuilding indexes can kill your
peformance while the indexes again seek their 'level'.

Check into at asktom.oracle.com.  There's some good examples.

jared





"Chuck Hamilton" <[EMAIL PROTECTED]>
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 03/11/2003 06:30 AM
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        Subject:        Analyzing indexes


I need to determine whether or not a couple of indexes need to be rebuilt.
The problem is the indexes are quite large and on a 24x7 high volume
database. If I try to run an "analyze validate structure" to gather the 
data
I need to make that decision, it sets a lock on the table for about an 
hour
which I can't afford to do. There is no slow time when I can do this and
management has said before they're not going to spring for the 
partitioning
option to break the indexes up into managable pieces. Is there some other
way I can get the information needed to determine if an index needs to be
rebuilt or not without setting a lock on the table? We are on Oracle 
8.1.7.

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