spool &1
col TABLESPACE_NAME for a60
set pagesize 250
set linesize 80
column  Pourcentage format 999.99       heading "Pourcentage" 
set termout off
select '/' || TABLESPACE_NAME, 
round(sum(User_Bytes)*100/sum(MaxBytes),2) Pourcentage
from DBA_DATA_FILES
where TABLESPACE_NAME='&2'
and autoextensible='YES'
GROUP BY TABLESPACE_NAME;
set termout on
spool off
exit;
