What is the Oracle backup database command?-Oracle-php.cn

Oracle database backup commands include: RMAN: a comprehensive backup and recovery tool that can be used to back up, archive and restore databases and verify backups; Export/Import: used to move specific database parts to other locations; other commands : Such as CREATE CONTROLFILE COPY, ALTER DATABASE ARCHIVELOG BACKUP and FLASHBACK DATABASE, for specific purposes.

What is the Oracle backup database command?

Oracle database backup command

Oracle provides a variety of methods to back up the database, each method has its own own strengths and weaknesses. The most commonly used backup commands are:

RMAN (Recovery Manager)

RMAN is a comprehensive backup and recovery tool with powerful features and options. RMAN commands are used to perform the following operations:

Backup database:BACKUP DATABASE
Archive redo logs:ARCHIVE LOG
RESTORE DATABASE:RESTORE DATABASE
VERIFY BACKUP:VERIFY DATABASE

EXPORT AND IMPORT

The export and import commands are used to move specific parts of the database to another location. These commands are used for the following operations:

Export data:EXP
Import data:IMP

Other backup commands

In addition to RMAN and export/import commands, there are other backup commands available for specific purposes:

CREATE CONTROLFILE COPY:Create a copy of the control file
ALTER DATABASE ARCHIVELOG BACKUP:Back up the archived redo log
FLASHBACK DATABASE:Restore the database to Earlier point in time

Choose the appropriate backup command

Choosing the appropriate backup command depends on the size, transaction rate, and availability requirements of the database. For large databases and systems with high transaction rates, RMAN is preferred. For smaller databases and lower transaction rates, export/import may be sufficient.

Backup using RMAN

To back up a database using RMAN, follow these steps:

Start RMAN.
Connect to the database.
Execute backup command.
Disconnect from the database.

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