oerr ora 19809

To got a hit with oerr ora 19809 so I checked 
$ oerr ora 19809

19809, 00000, "limit exceeded for recovery files"

//*Cause: The limit for recovery files specified by the

//        DB_RECOVERY_FILE_DEST_SIZE was exceeded.

// *Action: There are five possible solutions:

//          1) Take frequent backup of recovery area using RMAN.

//          2) Consider changing RMAN retention policy.

//          3) Consider changing RMAN archived log deletion policy.

//          4) Add disk space and increase DB_RECOVERY_FILE_DEST_SIZE.

//          5) Delete files from recovery area using RMAN.

I checked my v$recovery_file_dest;

select space_limit/1024/1024/1024 GB,space_used/1024/1024/1024 GB from v$recovery_file_dest;

Then added more GB to it.

ALTER SYSTEM DB_RECOVERY_FILE_DEST_SIZE = 300G scope=both;