RE: table/index space usage

From: Bala, Prakash <prakash.bala_at_cingular.com>
Date: Wed, 04 Apr 2001 11:52:59 -0700
Message-ID: <F001.002E1A49.20010404114606@fatcity.com>

Gregory,

This will give you the number of extents allocated and the the last used block# for a given segment.

    select extent_id+1, block_id
    from dba_extents
    where extent_id = (select max(extent_id)

                       from dba_extents
                       where segment_name = 'YYY'
                         and owner = 'XXX'
                         and tablespace_name = 'ZZZ')
      and segment_name = 'YYY'
      and owner = 'XXX'
      and tablespace_name = 'ZZZ';

So the total space used (in bytes) = # of extents * extent size * block size

HTH Prakash

-----Original Message-----

[mailto:gregory.t.norris_at_mail.sprint.com] Sent: Wednesday, April 04, 2001 3:21 PM
To: Multiple recipients of list ORACLE-L

I need to determine how much space some tables/indexes are really using, as opposed to how much is allocated to them. Anyone have a script you'd be willing to share?

Cheers!

--

My employers like me, but not enough to let me speak for them.

Greg Norris
Sprint LTD Database Administration
Phone: 913.345.6628
Internet: gregory.t.norris_at_mail.sprint.com OpenMail: Norris, Gregory T.
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--

Author: Bala, Prakash
  INET: prakash.bala_at_cingular.com

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