column flashbackmb format 999,999
column dbmb        format 999,999
column redomb      format 999,999
column est_fb_mb   format 999,999
select begin_time, end_time, flashback_data/1024/1024 flashbackmb, db_data/1024/1024 dbmb, redo_data/1024/1024 redomb, estimated_flashback_size/1024/1024 est_fb_mb
from v$flashback_database_stat order by 1
/
