A. Migrate the database to a new Amazon Redshift data warehouse.
B. Enable hash joins on the database by setting the variable optimizer_switch to hash_join=on.
C. Take a snapshot of the DB cluster. Create a new DB instance by using the snapshot, and enable parallel query mode.
D. Add an Aurora read replica.

- Awsexamhub website is not related to, affiliated with, endorsed or authorized by Amazon.
- Trademarks, certification & product names are used for reference only and belong to Amazon.