SQL> select
2 Tablespace_Name,
3 SQRT(MAX(Blocks)/SUM(Blocks))*
4 (100/SQRT(SQRT(COUNT(Blocks)))) Fsfi
5 from DBA_FREE_SPACE
6 group by
7 Tablespace_Name
8 order by 1
9
SQL> spool fsfi.lis
SQL> /
TABLESPACE_NAME FSFI
------------------------------ -------
DATA_1 8.30
SYSAUX 12.07
SYSTEM 59.31
UNDO 64.89
USERS 100.00
SQL> spool off
SQL>