RMAN archives deletion I have a file system for my archives which gets full in a short span of time. I want RMAN to backup all the archives automatically and delete the archives after backing it up when the archives mount-point gets full. 

Is that possible?
Yes, it is.

BACKUP ARCHIVELOG ALL DELETE ALL INPUT;


See: Deleting Archived Redo Logs After Backups in non-CDBs

Or you can use FRA and configure an archivelog deletion policy:

CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DEVICE TYPE DISK';


This way when the FRA is getting full, the database will automatically delete already backed up archivelogs.

See: CONFIGURE delalConf