Suddenly flashback file increased

Hi All,
I have two database ora1 and ora2. All parameters are same in this two database. In this two DB normally total flashback size 40 GB each. But suddenly flashback file of ora1 db is increased and size is 139 GB, but ora2 flashback file is till 40 GB. In ora1 and ora2 db flashback retention target is 1 day, but ora1 flashback logs 9 to 10 days old. Also we have execute daily RMAN backup in two db.Please let me know why flashback has grown so large and why it has flashback logs 1 week old when the flashback retention target is 1 day.
Oracle Version 10g
OS Linux

Hi Ashif,
Please find the output :
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 1;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/opt/oracle/10.2.0/dbs/snapcf_ora1.f'; # default
Edited by: user1013607 on Jan 30, 2012 12:30 AM

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855516 wrote:
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