Great feature available in Oracle databases, you can recover lost data using timestamps.

Details here, http://docs.oracle.com/cd/B28359_01/appdev.111/b28424/adfns_flashback.htm

SELECT * FROM sometable
  AS OF TIMESTAMP
   TO_TIMESTAMP('2013-07-24 07:25:00', 'YYYY-MM-DD HH:MI:SS')