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Re: Is this Needed?

From: Norman Dunbar <norman.dunbar_at_environment-agency.gov.uk>
Date: Wed, 26 Oct 2005 16:48:40 +0100
Message-Id: <s35fb393.065@environment-agency.gov.uk>

HI Stephen,

>> If you are having problems with migrated rows and dead keys then
your
>> time might be better spent on a a few 'alter table..move'/'alter
>> index...rebuild' and trying to minimise reoccurances.

Is the myth to which you allude the one about 'Oracle indexes never re-use deleted key entries'. This is indeed a myth as Oracle does reuse them. If an index block has, for example 20 deleted entries, then the next insert into that block will clean out those 'dead' ones.

Cheers,
Norman.

Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.

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Received on Wed Oct 26 2005 - 10:51:33 CDT

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