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RE: dbms_space_admin.tablespace_migrate_to_local

From: Connor McDonald <hamcdc_at_yahoo.co.uk>
Date: Wed, 03 Jul 2002 09:18:31 -0800
Message-ID: <F001.0048F0F8.20020703091831@fatcity.com>


Yes and no :-)

Yes - it uses a bitmap rather than hacking about with FET$ and UET$

No - it does not solve extent fragmentation fully since it does not limit the extent sizes in use in the existing tablespace. Basically it finds the greatest common divisor of all the existing extents in the tspace and uses that as the 'granularity' for extents.  You could end up with a something as low as a single block

Bottom line - if you're suffering on FET$ and UET$ then do it. If not, then it would be preferable to create new "proper" lmt tablespaces, move the data to them and drop the old ones...lots of work though

hth
connor

hth
connor


Connor McDonald
http://www.oracledba.co.uk
http://www.oaktable.net

"Remember amateurs built the ark - Professionals built the Titanic"



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Received on Wed Jul 03 2002 - 12:18:31 CDT

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