prompt <h2>Fast Recovery Area Usage</h2>
SELECT VALUE/1024/1024 TAILLE_FRA_MiB, ROUND((VALUE*TOT_PCT/100)/1024/1024,0) ESPACE_UTILISE_MiB, 
  TOT_PCT POURCENTAGE_UTILISE
FROM
  V$PARAMETER P,
  (SELECT SUM(PERCENT_SPACE_USED) TOT_PCT FROM V$FLASH_RECOVERY_AREA_USAGE) PCT_U
WHERE NAME='db_recovery_file_dest_size';
prompt
SELECT * FROM V$FLASH_RECOVERY_AREA_USAGE;