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Introduction and upgrade basics
Why back up your Oracle database? This section outlines the importance of backing up your data and provides guidelines for specific requirements and different backup methods.
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Recovery Manager (RMAN)
Oracle's Recovery Manager (RMAN) utility is the preferred method of backup and recovery. Find out how to use RMAN to take a hot or cold backup and handle other Oracle backup and recovery operations.
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Replication
Database replication is another backup method for storage management. This section explains replication, cloning, synchronization, snapshots and materialized views.
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Redo logs
Redo logs are used in Oracle database backup and recovery to help maintain file consistency in backups.
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Export
The Oracle export utility is not recommended as your only backup method, but it's useful in some situations. This section explains how to find out what data files you need and provides step-by-step instructions on copying a database or schema using the export utility.
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Hot backups
A hot backup is taken while a database is still running. Consistency is maintained during a hot backup because the database freezes the System Change Number (SCN) in the datafile's header. It is recommended that you perform hot backups with RMAN.
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Cold backups
Taking cold backups is easy and does not require archived redo logs. However, they do require database downtime, since they are taken when the database is not running for consistency. Here are several ways to take a cold backup.
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