rman target sys/Manager01@orabompj

RMAN> DELETE ARCHIVELOG ALL;

//その他 指定日付まで削除する場合
RMAN> DELETE ARCHIVELOG UNTIL TIME= "TO_DATE('2016-04-01 00:00:00','YYYY-MM-DD HH24:MI:SS')";
RMAN> DELETE ARCHIVELOG UNTIL TIME 'sysdate';