I usually do

select sum(bytes) from dba_Segments
where segment_name = 'TABLENAME';

HTH
--- Seema Singh <[EMAIL PROTECTED]> wrote:
> Hi
> How can I know how much space a table occupied?
> Can BLOCKS columns in dba_tables helps?
> Or I have to use dba_extents and dba_segments
> tables?
> Thx
> -Seema
> 
> 
> 
>
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