SQL & PL/SQL

  SELECT TRUNC (rvt.transaction_date) ,RVT.TRANSACTION_DATE  FROM rcv_vrc_txs_v rvt  WHERE
 TRUNC (rvt.transaction_date) BETWEEN (:p_from_date) AND NVL (:p_to_date,:p_from_date) 

TRUNC(RVT.TRANSACTION_DATE)                    TRANSACTION_DATE

2/5/2012                                                       2/5/2012 11:02:54 AM
2/26/2012                                                     2/26/2012 12:36:23 PM
2/29/2012                                                     2/29/2012 10:48:29 AM

in the above query when i give value for p_from_date 02-feb-2012 and p_end_date 29_feb-2012 i get the above output which is correct

but in the below query when i give  p_from_date 02-feb-2012 and p_end_date 29_feb-2012     i get  dates starting from 2007 onwards as shown below

SELECT TO_CHAR (TO_DATE (rvt.transaction_date, 'DD/MM/RRRR'), 'DD-MON-RRRR'),
       rvt.transaction_date
  FROM rcv_vrc_txs_v rvt
 WHERE TO_CHAR (TO_DATE (rvt.transaction_date, 'DD/MM/RRRR'), 'DD-MON-RRRR')
          BETWEEN (:p_from_date)
              AND NVL (:p_to_date, :p_from_date)


TO_CHAR(TO_DATE(RVT.TRANSACTION_DATE,'DD/MM/RRRR')                          TRANSACTION_DATE
13-JAN-2007                                                                                                  1/13/2007 10:32:03 AM
......                                                                                                                  .......
25-MAR-2012                                                                                                  3/25/2012 11:32:55 AM


kindly guide me to make the 2nd query also to fetch dates only from 02-feb-2012 and 29-feb-2012