To Check All The Tablespaces Size

To Check All The Tablespaces Size

 select
   fs.tablespace_name                          "Tablespace",
  df.totalspace                               "TOT_SIZE",
  fs.freespace                                "TOT_FREE",
  (round(100 * (fs.freespace / df.totalspace))) pct_Free
from
   (select      tablespace_name,
      round(sum(bytes) / 1048576) TotalSpace
   from
      dba_data_files
   group by
      tablespace_name
   ) df,
   (select
      tablespace_name,
      round(sum(bytes) / 1048576) FreeSpace
   from
      dba_free_space
   group by
      tablespace_name  ) fs
where   (df.tablespace_name = fs.tablespace_name ) ORDER BY pct_free DESC ;