Duplexing Backup to disks fails with ORA-19806
I am trying to set up rman backup sets to two different location on disk.
During the execution it is failing with the below error.
RMAN-03009: failure of backup command on c1 channel at 09/17/2013 08:06:06
ORA-19806: cannot make duplex backups in recovery area
continuing other job steps, job failed will not be re-run
released channel: c1
released channel: c2
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on c2 channel at 09/17/2013 08:06:06
ORA-19806: cannot make duplex backups in recovery area
Database : 11.2.0.3.0 and linux operating system
I have ASM setup and having setup of FRA DISKGROUP where archives are getting stored.