Вячеслав Любомудров |
Путать бэкап и экспорт тоже не рекомендуется - они не взаимозаменяемы и служат разным целям
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Physical Backups and Logical Backups
A backup is a copy of data from your database that can be used to reconstruct that data. Backups can be divided into physical backups and logical backups.
Physical backups are backups of the physical files used in storing and recovering your database, such as datafiles, control files, and archived redo logs. Ultimately, every physical backup is a copy of files storing database information to some other location, whether on disk or some offline storage such as tape.
Logical backups contain logical data (for example, tables or stored procedures) exported from a database with an Oracle export utility and stored in a binary file, for later re-importing into a database using the corresponding Oracle import utility.
See also:
Oracle Database Utilities for more details about using Oracle export and import utilities for logical backups
Physical backups are the foundation of any sound backup and recovery strategy. Logical backups are a useful supplement to physical backups in many circumstances but are not sufficient protection against data loss without physical backups.
Unless otherwise specified, the term "backup" as used in the backup and recovery documentation refers to physical backups, and to back up part or all of your database is to take some kind of physcial backup. The focus in the backup and recovery documentation set will be almost exclusively on physical backups.
... и многое другое на
http://download-uk.oracle.com/docs/cd/B19306_01/backup.102/b14192/intro001.htm#sthref16Ну не стОит так категорично... Это просто один из инструментов в т.ч. резервирования данных. Со своими преимуществами и недостатками и ,соответственно, последствиями использования оных.