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>