Query to find Tabelspace Usage

SELECT d.status , d.tablespace_name as Name, d.CONTENTS as Type,
d.extent_management as ExtentManagement,
TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.900') as Siz,
TO_CHAR (NVL (a.BYTES - NVL (f.BYTES, 0), 0) / 1024 / 1024,
'99999999.999'
)
|| '/'
|| TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99999999.999') as Used,
TO_CHAR (NVL ((a.BYTES - NVL (f.BYTES, 0)) / a.BYTES * 100, 0),
'990.00'
) as "Used (%)"
FROM dba_tablespaces d,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_data_files
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_free_space
GROUP BY tablespace_name) f
WHERE d.tablespace_name = a.tablespace_name(+)
AND d.tablespace_name = f.tablespace_name(+)
AND NOT (d.extent_management LIKE 'LOCAL' AND d.CONTENTS LIKE 'TEMPORARY')
UNION ALL
SELECT d.status , d.tablespace_name as Name, d.CONTENTS as Type,
d.extent_management as ExtentManagement,
TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.900') as Siz,
TO_CHAR (NVL (t.BYTES, 0) / 1024 / 1024, '99999999.999')
|| '/'
|| TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99999999.999') as Used,
TO_CHAR (NVL (t.BYTES / a.BYTES * 100, 0), '990.00') as "Used (%)"
FROM dba_tablespaces d,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_temp_files
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM (bytes_cached) BYTES
FROM v$temp_extent_pool
GROUP BY tablespace_name) t
WHERE d.tablespace_name = a.tablespace_name(+)
AND d.tablespace_name = t.tablespace_name(+)
AND d.extent_management LIKE 'LOCAL'
AND d.CONTENTS LIKE 'TEMPORARY';