Delete Archivelog until time
Oracle database is archiving redo log group files if database is in archivelog mode.
When redo log files are archived, then redo log files are overwritten with new redo data. But archivelogs are not deleted or automatically if you don’t schedule any deletion job.
You need to delete archivelog periodically, otherwise you will get archiver errors.
Delete Archivelog via RMAN
You can delete all archivelogs with following query.