{ {BACKUP LOCATION ['] backup_location ['] | DEVICE TYPE deviceSpecifier [, deviceSpecifier]... | DORECOVER | fileNameConversionSpec | FROM ACTIVE DATABASE | LOGFILE [INSTANCE ' name '] logSpec [, [INSTANCE ' name '] logSpec]... | NOCHECK | NOFILENAMECHECK | NOREDO | NORESUME | OPEN RESTRICTED | PASSWORD FILE | PFILE ['] filename ['] | SKIP READONLY | SKIP TABLESPACE ['] tablespace_name ['] [, ['] tablespace_name [']]... | SPFILE [ { setParameter [setParameter]... | PARAMETER_VALUE_CONVERT [{] {['] string_pattern [']}/ [,] [}] [ {setParameter}... }] | {TABLESPACE | UNDO TABLESPACE} ['] tablespace_name ['] [, ['] tablespace_name [']]... | {TO RESTORE POINT restore_point_name | untilClause}} [}] | {TABLESPACE | UNDO TABLESPACE} ['] tablespace_name ['] [, ['] tablespace_name [']]... | {TO RESTORE POINT restore_point_name | untilClause}}]...