Common rman backup settings to be used
On the primary
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY BACKED UP 1 TIMES TO DISK;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '+RECO';
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '+RECO';
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+RECO/snapcf_<db>.cf';
On all standby:
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '+RECO';
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '+RECO';
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+RECO/snapcf_<db>.cf';
On all farsync:
CONFIGURE ARCHIVELOG DELETION POLICY TO SHIPPED TO ALL STANDBY;