Calculate database size.

Hi,
Any one help me how to check the total database size and currently used size in oracle.
Regards,
S.Mugunthan.

mugunthan wrote:
Hi,
Any one help me how to check the total database size and currently used size in oracle.
Regards,
S.Mugunthan.check the total database size and currently used size in oracle
col "Database Size" format a20
col "Free space" format a20
col "Used space" format a20
select     round(sum(used.bytes) / 1024 / 1024 / 1024 ) || ' GB' "Database Size"
,     round(sum(used.bytes) / 1024 / 1024 / 1024 ) -
     round(free.p / 1024 / 1024 / 1024) || ' GB' "Used space"
,     round(free.p / 1024 / 1024 / 1024) || ' GB' "Free space"
from    (select     bytes
     from     v$datafile
     union     all
     select     bytes
     from      v$tempfile
     union      all
     select      bytes
     from      v$log) used
,     (select sum(bytes) as p
     from dba_free_space) free
group by free.p
/

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