RMAN Backups in RAC

Best practices for performing RMAN backups in an Oracle RAC environment.

All backups by default go to FRA disk group in RAC. Take RMAN backup to custom location in Oracle RAC

RMAN> backup as compressed backupset database format '+RMANDG';

or

run{
allocate channel ch1 format '+RMANDG/RAC_DB_Backup_%u';
allocate channel ch2 format '+RMANDG/RAC_DB_Backup_%u';
backup database plus archivelog;
release channle ch1;
release channel ch2;
}