How to backup recovery area in oracle database ?

 RMAN> backup recovery area to destination '/u01/app/oracle/'

2> ;

Starting backup at 24-MAY-25

using channel ORA_DISK_1

specification does not match any datafile copy in the repository

skipping backup set key 23; already backed up 1 time(s)

skipping backup set key 26; already backed up 1 time(s)

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=17 RECID=12 STAMP=1201940579

input archived log thread=1 sequence=18 RECID=13 STAMP=1201956550

input archived log thread=1 sequence=19 RECID=14 STAMP=1201956572

channel ORA_DISK_1: starting piece 1 at 24-MAY-25

channel ORA_DISK_1: finished piece 1 at 24-MAY-25

piece handle=/u01/app/oracle/DB1/backupset/2025_05_24/o1_mf_annnn_TAG20250524T135211_n33mrcpv_.bkp tag=TAG20250524T135211 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03

Finished backup at 24-MAY-25

Starting Control File and SPFILE Autobackup at 24-MAY-25

piece handle=/u01/app/oracle/fast_recovery_area/DB1/autobackup/2025_05_24/o1_mf_s_1201960334_n33mrjx1_.bkp comment=NONE

Finished Control File and SPFILE Autobackup at 24-MAY-25

RMAN>