set pagesize 500;
set linesize 1000;
col PER format a10;
col NAME format a20;
SELECT UPPER(F.TABLESPACE_NAME) "NAME",
D.TOT_GROOTTE_MB "TSIZE(M)",
D.TOT_GROOTTE_MB - F.TOTAL_BYTES "USIZE(M)",
TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB 100, 2), '990.99') "PER",
F.TOTAL_BYTES "FREE(M)",
F.MAX_BYTES "MAX(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 1024), 2) TOTAL_BYTES,
ROUND(MAX(BYTES) / (1024 1024), 2) MAX_BYTES
FROM SYS.DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F,
(SELECT DD.TABLESPACE_NAME,
ROUND(SUM(DD.BYTES) / (1024 1024), 2) TOT_GROOTTE_MB
FROM SYS.DBA_DATA_FILES DD
GROUP BY DD.TABLESPACE_NAME) D
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
ORDER BY 4 DESC;