Свободное место в табличных пространствах : Oracle

SET LINESIZE 85
SET PAGESIZE 200
column tablespace_name format a18
column file_name format a25
column Allocated_kb format 999,999,999
column free_kb format 999,999,999
column Percent_Free format 999

SELECT
   df.tablespace_name,
   df.file_name,
   df.bytes/1024 Allocated_kb,
   free.free_kb,
   Round(free.free_kb/(df.bytes/1024)*100) Percent_Free
FROM
   dba_data_files df,
   (SELECT file_id, SUM(bytes)/1024 free_kb
    FROM dba_free_space GROUP BY file_id) free
WHERE
   df.file_id=free.file_id
ORDER BY
   Percent_Free;