To enable automatic backup in Oracle, follow these steps: 1. Create a backup plan; 2. Enable a backup plan; 3. Schedule the backup window. Automatic backups automatically connect to the database, identify changes, create incremental backups, store backups, and clean old backups, thereby reducing management burdens, improving data protection, providing version control, optimizing performance and supporting compliance.
Oracle database automatic backup
How to enable automatic backup?
Enable automatic backup in an Oracle database requires the following steps:
1. Create a backup plan:
- Use the RMAN Backup utility to create a backup plan, specify backup goals, retention policies, and other options.
<code>RMAN> create backup plan autobackup_plan target '/oracle/backup/db1' retention policy to redundancy 2;</code>
2. Enable backup plan:
- Associate the automatic backup plan with the database to perform backups regularly.
<code>RMAN> enable backup plan autobackup_plan;</code>
3. Scheduling backup window:
- Sets a time window for automatic backups, where backups are performed.
<code>RMAN> configure backup window optimize for 1 day starting at 12:00;</code>
How does automatic backup work?
When automatic backup is enabled, RMAN performs the following steps within the specified time window according to the configured schedule:
- Connect to the database: RMAN establishes a connection to the database.
- Identify changes: RMAN Compare database changes since the last backup.
- Create an incremental backup: RMAN Create an incremental backup containing the changes in the database.
- Storage Backup: Incremental backups are stored in the specified backup target.
- Clean up old backups: RMAN deletes old backups that are no longer needed according to retention policy.
Advantages:
Automatic backup provides the following advantages:
- Reduce management burden: Automate the backup process without manual intervention.
- Improve data protection: Regular backups ensure data is protected even if data loss occurs.
- Version Control: Incremental backup creates a backup chain that allows users to restore the database to any specific point in time.
- Performance Optimization: Optimizing the backup time window minimizes the impact of backups on production databases.
- Compliance: Automatic backup supports data protection and compliance requirements.
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