I currently have several database connections that are used in various MXDs that are used to publish my map and feature services. I recently had to change the passwords for all of those database connections, and thus there is a need to update all of the layers in the MXDs with the updated data source information. In this situation, once the layers in the MXDs are updated, will the web services need to be republished or simply just restarted? I feel like the services would need to be republished for the changes to be reflected, but I've never done this before so I just wanted to make sure I was doing it correctly. For reference, I am currently using ArcGIS Server 10.5.1 and my database connections are Oracle.