Oracle Database Administration from Zero to Hero - Flashback Database

This lecture covers the Flashback Database feature in Oracle, explaining its setup, execution, and benefits. It allows users to revert databases to previous states without restoring from backups. The lecture details the configuration process, including setting up the Fast Recovery Area and retention targets. It also discusses executing flashback operations, monitoring progress, and best practices. Additionally, it explains restore points, both normal and guaranteed, and their role in database recovery.

What is the primary benefit of using Flashback Database?

• It allows you to upgrade your database automatically.

• It enables you to revert the database to a previous state without using backups.

• It provides a way to archive old data.

• It helps in optimizing database performance.

What is the purpose of the Flashback Writer (RVWR) process?

• To optimize query performance

• To backup the database

• To write flashback logs to storage

• To manage user connections

What is essential to configure when setting up Flashback Database?

• Database schema

• User permissions

• Network settings

• Fast Recovery Area (FRA)

Which command is used to enable Flashback Database?

• START FLASHBACK DATABASE

• ALTER DATABASE ENABLE FLASHBACK

• TURN ON FLASHBACK DATABASE

• ENABLE FLASHBACK MODE

What must be considered regarding data files when using Flashback Database?

• Data files must be encrypted.

• Data files must be offline if resized during the flashback period.

• Data files cannot be resized.

• Data files must be archived.

How can you monitor the retention target of Flashback Database?

• By reviewing the alert log

• By querying the DBA_FLASHBACK_RETENTION view

• By using the DBMS_MONITOR package

• By checking the V$Flashback_Database_Log view

What is a key consideration when using Flashback Database with automatic extension data files?

• They cannot be used with Flashback Database.

• They require additional configuration.

• They must be manually resized.

• They can be used without restrictions.

What is a restore point in the context of Flashback Database?

• A backup of the entire database

• A specific SCN or time to which the database can be reverted

• A snapshot of the database schema

• A log of all database transactions

What is the difference between normal and guaranteed restore points?

• Normal restore points require more disk space.

• Guaranteed restore points are automatically deleted.

• Normal restore points are temporary, while guaranteed ones are permanent.

• Guaranteed restore points ensure enough flashback logs are retained.

What happens if you forget to drop a guaranteed restore point?

• The FRA will eventually run out of disk space.

• The database will automatically delete it.

• It will cause the database to crash.

• It will convert to a normal restore point.