Originally posted by marist89
Code:
SQL> l
  1  select sum(mb)*1.25 from (
  2     select sum(bytes/1024/1024) mb
  3     from dba_data_files
  4     union all
  5     select sum(bytes/1024/1024) mb
  6     from dba_temp_files
  7*    )
SQL> /

SUM(MB)*1.25
------------
      511.25
Childs play I say! Post the sql to determine the size of an RMAN backup and then I will be impressed