Rename an RDS (Amazon Relational Database Service) instance or change endpoint

You can follow these steps:

Sign in to the AWS Management Console.

Open the Amazon RDS console.

In the navigation pane, choose "Instances".

Select the RDS instance that you want to rename.

Choose the "Modify" option from the "Instance actions" dropdown menu.

In the "Modify DB Instance" page, locate the "DB Instance Identifier" field.

Enter the new name for your RDS instance in the "DB Instance Identifier" field.

Scroll down and choose the "Continue" button.

On the confirmation page, review the changes you made.

Choose the "Modify DB Instance" button to apply the changes.

Please note that renaming an RDS instance will cause a brief outage during the renaming process. It's recommended to schedule the renaming during a maintenance window or at a time when it won't impact your application's availability. Additionally, ensure that you update any application configurations or scripts that reference the RDS instance with the new name to avoid disruptions in connectivity.