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CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/u03/oracle/backup/%F';
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 1;
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/u03/oracle/backup/%U';

BACKUP AS COMPRESSED BACKUPSET DATABASE PLUS ARCHIVELOG;

DELETE ARCHIVELOG ALL;
DELETE ARCHIVELOG ALL COMPLETED BEFORE 'sysdate -7';

select * from V$RECOVERY_FILE_DEST;
select * from V$RECOVERY_AREA_USAGE;