It should be each of the individual datasources that are connected to that server. In CF Administrator, in the left-hand navigation pane, expand "Data & Services". Click on "Data Sources". You'll have to examine each one that lists the type of database server you use under the "Driver" column to find the one(s) connected to your production server. For each data source, click on the edit icon under the "Actions" column, or click on the data source name. This will bring up a form where you can change the name or IP address of the database server. Change the name or IP and click Submit. Repeat for each datasource that needs to be updated.