-------------------------------------------------------------------------------------------
-- SCRIPT:  DF.SQL
-- PURPOSE: Show Oracle tablespace free space in Unix df style
-- AUTHOR:  Tanel Poder [ http://www.tanelpoder.com ]
-- DATE:    2003-05-01
-------------------------------------------------------------------------------------------

col "% Used" for a6
col "Used" for a22

select t.tablespace_name, t.mb "TotalMB", t.mb - nvl(f.mb,0) "UsedMB", nvl(f.mb,0) "FreeMB"
       ,lpad(ceil((1-nvl(f.mb,0)/decode(t.mb,0,1,t.mb))*100)||'%', 6) "% Used", t.ext "Ext", 
       '|'||rpad(lpad('#',ceil((1-nvl(f.mb,0)/decode(t.mb,0,1,t.mb))*20),'#'),20,' ')||'|' "Used"
from (
  select tablespace_name, trunc(sum(bytes)/1048576) MB
  from dba_free_space
  group by tablespace_name
 union all
  select tablespace_name, trunc(sum(bytes_free)/1048576) MB
  from v$temp_space_header
  group by tablespace_name
) f, (
  select tablespace_name, trunc(sum(bytes)/1048576) MB, max(autoextensible) ext
  from dba_data_files
  group by tablespace_name
 union all
  select tablespace_name, trunc(sum(bytes)/1048576) MB, max(autoextensible) ext
  from dba_temp_files
  group by tablespace_name
) t
where t.tablespace_name = f.tablespace_name (+)
order by t.tablespace_name;