Cloud data source setting is not allowed refresh through gateway.

Hi, when working with onpremise and cloud sources there is a setting for the Data Gateway to configure at the Manage Gateway settings. If you are the gateway admin go to the settings and check the following option:

Once that's turned on, you can configure the oracle source for the gateway and for the cloud ones you can just open the "DataSource Credentials" section of the dataset (Semantic model) settings and edit it.

I hope that helps,