Find Tablespace Freespace in ORACLE 11g

Below query is useful to displays a list of tablespaces and their used/full status.

COL tspace form a25 Heading "Tablespace"
COL tot_ts_size form 99999999999999 Heading "Size (Mb)"
COL free_ts_size form 99999999999999 Heading "Free (Mb)"
COL ts_pct form 9999 Heading "% Free"
COL ts_pct1 form 9999 Heading "% Used"
BREAK on report
COMPUTE sum of free_ts_size on report
COMPUTE sum of tot_ts_size on report
SELECT                                                            /* + RULE */
         df.tablespace_name tspace, df.BYTES / (1024 * 1024) tot_ts_size,
         SUM (fs.BYTES) / (1024 * 1024) free_ts_size,
         NVL (ROUND (SUM (fs.BYTES) * 100 / df.BYTES), 1) ts_pct,
         ROUND ((df.BYTES - SUM (fs.BYTES)) * 100 / df.BYTES) ts_pct1
    FROM dba_free_space fs,
         (SELECT   tablespace_name, SUM (BYTES) BYTES
              FROM dba_data_files
          GROUP BY tablespace_name) df
   WHERE fs.tablespace_name(+) = df.tablespace_name
GROUP BY df.tablespace_name, df.BYTES
UNION ALL
SELECT                                                            /* + RULE */
         df.tablespace_name tspace, fs.BYTES / (1024 * 1024) tot_ts_size,
         SUM (df.bytes_free) / (1024 * 1024) free_ts_size,
         NVL (ROUND ((SUM (fs.BYTES) - df.bytes_used) * 100 / fs.BYTES),
              1
             ) ts_pct,
         ROUND ((SUM (fs.BYTES) - df.bytes_free) * 100 / fs.BYTES) ts_pct1
    FROM dba_temp_files fs,
         (SELECT   tablespace_name, bytes_free, bytes_used
              FROM v$temp_space_header
          GROUP BY tablespace_name, bytes_free, bytes_used) df
   WHERE fs.tablespace_name(+) = df.tablespace_name
GROUP BY df.tablespace_name, fs.BYTES, df.bytes_free, df.bytes_used
ORDER BY 4 DESC
/

Thanks,
Chowdari