Aurora
- Modifying an Amazon Aurora DB cluster - Amazon Aurora
- [Settings for Amazon Aurora] - [Downtime notes] 列を参照
RDS
- Modifying an Amazon RDS DB instance - Amazon Relational Database Service
- [Settings for DB instances] - [Downtime notes] 列を参照
パラメータグループ
- パラメータの "Apply Type(適用タイプ)" が dynamic のものは再起動不要。