solution for ORA-19809: limit exceeded for recovery files

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================

RMAN-03009: failure of backup command on ORA_DISK_1 channel at 08/27/2013 15:58:
05
ORA-19809: limit exceeded for recovery files
ORA-19804: cannot reclaim 52428800 bytes disk space from 4327473152 limit
When I went through some forums, I found a lot of solutions, but when I checked with their situations, it doesn't match.

One solution was to increase the db_recovery space. So I checked the space and got this result.
db_recovery size

 SQL> show parameter db_recovery;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest                string      /u01/app/oracle/fast_recovery_
                                                 area
db_recovery_file_dest_size           big integer 4127M

Space Usage

SQL> select SPACE_USED/1024/1024/1024,SPACE_LIMIT/1024/1024/1024 from  v$recovery_file_dest;

SPACE_USED SPACE_LIMIT
---------- -----------
 800155136  4327473152
Available Space

 SQL>SELECT
NAME,
TO_CHAR(SPACE_LIMIT, '999,999,999,999') AS SPACE_LIMIT,
TO_CHAR(SPACE_LIMIT - SPACE_USED + SPACE_RECLAIMABLE,
'999,999,999,999') AS SPACE_AVAILABLE,
ROUND((SPACE_USED - SPACE_RECLAIMABLE)/SPACE_LIMIT * 100, 1)
AS PERCENT_FULL
FROM V$RECOVERY_FILE_DEST;

NAME
--------------------------------------------------------------------------------
SPACE_LIMIT      SPACE_AVAILABLE  PERCENT_FULL
---------------- ---------------- ------------
/u01/app/oracle/fast_recovery_area
   4,327,473,152    3,488,460,800         19.4





 select * from v$flash_recovery_area_usage;

FILE_TYPE    PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE                   0                         0               0
ONLINELOG                     0                         0               0
ARCHIVELOG                    0                         0               0
BACKUPPIECE                   0                         0               0
IMAGECOPY                 99.63                         0             244
FLASHBACKLOG                  0                         0               0

6 rows selected

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change the FRA (DB_RECOVERY_FILE_DEST) size
delete old archive logs from the list