Oracle Database Administration from Zero to Hero - Practice - Performing Recovery Part I

The video tutorial covers various database recovery scenarios in non-CDB databases, including complete recovery in no archive log mode, complete recovery in archive log mode, and recovery of user tablespace data file loss. It provides detailed steps for each scenario, emphasizing the importance of backup and recovery policies. The tutorial also highlights the use of RMAN for database restoration and the significance of the reset logs option.

What is the primary focus of the recovery scenarios discussed in the video?

• Backup strategies for cloud databases

• Security measures for database protection

• Complete recovery in non-CDB databases

• Performance tuning for databases

In the no archive log mode, when can a backup of the database be taken?

• When the database is shut down

• When the database is in mounted state

• When the database is running

• When the database is in read-only mode

What is the first step to take when a critical data file is lost in no archive log mode?

• Report the issue to management

• Attempt to log into the database

• Check the alert log file for errors

• Immediately restore the database

What should management understand about data loss in no archive log mode?

• Data is automatically backed up every hour

• Data loss is not possible in this mode

• Data can be fully recovered without loss

• Data entered since the last backup will be lost

What is a key difference in recovery between no archive log mode and archive log mode?

• No archive log mode allows faster recovery

• Archive log mode allows recovery without shutting down the database

• Archive log mode does not require backups

• No archive log mode supports incremental backups

What is the purpose of validating backup files before restoring in archive log mode?

• To verify the database version

• To ensure the database is running

• To confirm the backup files are not corrupted

• To check the size of the backup files

What happens to the incarnation number when the database is opened with the reset logs option?

• It is decremented

• It remains the same

• It is reset to zero

• It is incremented

What is the first step in recovering a user tablespace data file loss?

• Shut down the database

• Take a full online backup of the tablespace

• Switch to no archive log mode

• Delete the backup files

Why is it possible to recover a tablespace while the database is running in archive log mode?

• Because the database is not using any logs

• Because the database is automatically backed up

• Because the database is in read-only mode

• Because archive log mode supports online recovery

What should be done after recovering a database in real-life scenarios?

• Delete all backup files

• Take a full backup of the entire database

• Restart the database server

• Switch to no archive log mode