{ARCHIVELOG | DATAFILE} BACKUP COPIES FOR DEVICE TYPE deviceSpecifier {CLEAR | TO integer} | BACKUP OPTIMIZATION {ON | OFF | CLEAR} | EXCLUDE FOR TABLESPACE tablespace_name [CLEAR] | MAXSETSIZE {CLEAR | TO {sizeSpec | UNLIMITED}} | RETENTION POLICY {CLEAR | TO {NONE | RECOVERY WINDOW OF integer DAYS | REDUNDANCY integer}}