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Relating actual object size to Storage parameters

From: Paul Vincent <Paul.Vincent_at_uce.ac.uk>
Date: Wed, 15 Sep 2004 07:46:10 +0100
Message-ID: <14C5F9616FF43F479F67E41A1DF4D94A76D3DC@exchangeb.staff.uce.ac.uk>


I just spotted something puzzling. I was checking the sizing of some Oracle 8i tables, using TOAD's Schema Browser. There are tables and indexes which have initial and next extent sizes of 409600 (400K), have only a single extent, yet the "Size in bytes" is given as 524288 (512K). The db_block_size is 8192 (8K), and 400K is a multiple of 8K, so why do the storage parameters for these objects appear to have been ignored? Any ideas?

Paul Vincent
Database Administrator
University of Central England

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Received on Wed Sep 15 2004 - 01:41:41 CDT

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