After a full backup on an Oracle 12.1 database with retention policy set to 1 and ARCHIVELOG DELETION POLICY BACKED UP 2 TIMES TO DISK, if a run delete obsolete device type disk, all archivelogs are gone even if those are not backed up twice on disk. Why? I'm missing something? Backup script commands:
backup database plus archivelog; crosscheck backup; delete obsolete device type disk; delete expired backup device type disk;
Rman settings, out of that, all are default.
RETENTION POLICY TO REDUNDANCY 1; ARCHIVELOG DELETION POLICY BACKED UP 2 TIMES TO DISK;