Oracle-L: RE: How do I find out the size of a index

From: <Jared.Still_at_radisys.com>
Date: Wed, 13 Aug 2003 15:49:23 -0800
Message-ID: <F001.005CA88E.20030813154923@fatcity.com>

.. or even the actual size of the data

use dbms_space for that

DENNIS WILLIAMS <DWILLIAMS_at_lifetouch.com> Sent by: ml-errors_at_fatcity.com
08/13/2003 10:39 AM
Please respond to ORACLE-L

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
        cc: 
        Subject:        RE: How do I find out the size of a index

Roger - What do you mean by size? The allocation on disk, or the actual number of blocks the index is using? Years ago when I was trying to get the
actual number of blocks an index was using (to predict when an index was going to outgrow its extent), I used the LEAF_BLOCKS of the USER_INDEXES table (after analyze, as Tanel points out. Theoretically this is slightly under the total, but it was the closest I was able to find.

Dennis Williams
DBA, 80%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Wednesday, August 13, 2003 11:54 AM To: Multiple recipients of list ORACLE-L

Hi,

I can use "select blocks*8 from dba_tables where table_name='ABC'" to find out the size of a table.
How do I find out the size of a index? I do not see a column BLOCK in dba_indexes.

Thanks,

Roger Xu
Database Administrator
Dr Pepper Bottling Company of Texas
(972)721-8337

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