BACKUP FILES [FOR DEVICE TYPE deviceSpecifier] TO {NOTACCESSIBLE_ | ACCESSIBLE_} | DB_UNIQUE_NAME ['] db_unique_name ['] {CLEAR | CONNECT IDENTIFIER quoted_string} | COMPRESSION ALGORITHM quoted_string [ { {OPTIMIZE FOR LOAD {TRUE | FALSE} | AS OF RELEASE quoted_string}}...] | DECRYPTION {IDENTIFIED BY password [, password]... | WALLET OPEN IDENTIFIED BY password} | ECHO {OFF | ON} | ENCRYPTION {ALGORITHM quoted_string | IDENTIFIED BY password [ONLY] | {OFF | ON} [FOR ALL TABLESPACES]} [ {ALGORITHM quoted_string | IDENTIFIED BY password [ONLY] | {OFF | ON} [FOR ALL TABLESPACES]}]... | PASSPHRASE {OFF | ON IDENTIFIED BY password} | PREPLUGIN CONTAINER {CLEAR | pdb_name}