Interview › Databases & Caching
What is an RDS option group?
Databases & Caching · Basic level
Answer
An RDS option group enables engine-specific optional capabilities that are not simple parameter settings, especially for Oracle, SQL Server, and some MySQL/MariaDB features. It can attach features such as native backup/restore, audit plugins, or other engine options depending on support.
Technical explanation
Parameter groups tune engine settings; option groups attach optional engine features or integrations.
Some options require IAM roles, S3 access, ports, license review, or downtime.
Treat option group changes as production changes with compatibility and rollback review.
Hands-on example
Evaluation example:
$ aws rds describe-option-group-options --engine-name sqlserver-se
Before enabling an option, confirm engine edition/version support, required IAM role, port exposure, downtime/reboot requirement, and whether the option can be removed later.
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