ORA-19804, ORA-19809: limit exceeded for recovery files

I was taking backup of database as image copy of size 200G, I faced ORA errors like ORA-19809, ORA-19804 as shown below

RMAN> run

{

allocate channel ch1 type disk;

backup as copy SECTION SIZE 800M database;

release channel ch1;

}2> 3> 4> 5> 6>

using target database control file instead of recovery catalog

allocated channel: ch1

channel ch1: SID=2330 device type=DISK

Starting backup at 07-JAN-19

channel ch1: starting datafile copy

input datafile file number=00013 name=+DATA/TECH_DB/DATAFILE/tech_tbs_data.277.996526534

backing up blocks 1 through 153600

released channel: ch1

RMAN-00571: ===========================================================

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

RMAN-00571: ===========================================================

RMAN-03009: failure of backup command on ch1 channel at 01/07/2019 05:52:11

ORA-19809: limit exceeded for recovery files

ORA-19804: cannot reclaim 322123595776 bytes disk space from 107374182400 limit

RMAN> 

Below is the solution for the same

I found database size is 200GB and FRA size is set 100GB only, which caused this error

commands to check size of FRA

SQL> show parameter db_recovery

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

db_recovery_file_dest                string      +FLASH

db_recovery_file_dest_size           big integer 100G

SQL>

Command to check size of database and usage of FRA

SQL > select sum(bytes)/1024/1024/1024 as "Size Of DB" from dba_data_files;

              Size Of DB

-------------------------

                      200

SQL> col NAME for a10

SQL> SELECT NAME, round(space_limit/1024/1024/1024,2) TOTAL_GB, round(space_used/1024/1024/1024,2) USED_GB, round((space_limit-space_used+space_reclaimable)/1024/1024/1024,2) AVAILABLE_GB, ROUND((space_used-space_reclaimable)/space_limit * 100,1) PERCENT_FULL FROM v$recovery_file_dest;

NAME         TOTAL_GB    USED_GB AVAILABLE_GB PERCENT_FULL

---------- ---------- ---------- ------------ ------------

+FLASH            100       1.09        99.42           .6

I have changed size of the FRA using DB_RECOVERY_FILE_DEST_SIZE to 250GB, then it worked without any issue.

ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE =250G SCOPE=BOTH

Once this is done fire RMAN backup command, it will initiate the backup and will not through this error.