Oracle database data protection methods
Incremental Backups
1. Incremental backup in the Oracle database captures only blocks of data that have changed since the previous backup, not the entire database.
2. This makes the Incremental backups smaller than the full backups, which are easy to store and recover.
3. Redo logs track the changes not yet written to the primary data files. Incremental backups already capture these changes, minimizing the need to apply redo logs during data file media recovery.
Block Media recovery
1. This process repairs corrupted data blocks within a data file without taking the entire data file offline or restoring it from a backup.
2. This process is ideal for situations where only a few blocks are affected, saving time and minimizing downtime.
3. The “Recover Block” command performs this operation.
Binary Compression:
1. This feature reduces the size of the backups by compressing the data before storing it.
2. This improves backup efficiency, as smaller backups require less storage space and less time to transfer.
3. This feature comes as a built-in mechanism for the Oracle database.
Encrypted Backups
1. Encryption protects sensitive data from unauthorized access even if the backups are compromised.
2. This feature allows you to Securely Store the Backup sets by encrypting them.
3. Oracle’s Recovery Manager (RMAN) uses data encryption capabilities for this process.
Automated Database duplication
1. This process or feature allows you to create an exact replica of your database quickly.
2. It supports various storage configurations, directly copying data between Automatic Storage Management (ASM) databases.
3. This feature helps create Non-Production environments (Development, Test, QA) and disaster recovery environments.
Cross-Platform data conversion
1. This Capability allows you to migrate data between databases running on different platforms.
2. This can be beneficial when you move your database from one Operating System to another or upgrade your database to a newer version.
Key Takeaways
Incremental backups are a space and time-efficient way to capture data changes in your database. They are faster to create and, at the same time, faster to restore than the full backups. Block media recovery efficiently repairs corrupted data blocks, Binary compression saves storage space efficiently, Encrypted backups protect sensitive data, Automated database duplication simplifies database replication, and Cross-Platform data conversion helps and enables data migration between different platforms.
Overall, the above-mentioned features offer tools to manage and secure the Oracle database effectively.
Note: Approach Oracle Support when you are in question with any of the above tools. This way, you will receive authentic and up-to-date information.
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