Oracle selective redo log shipping
Not possible, redo logs get transferred unprocessed. If you want to transfer changes related to just some specific objects or schemas, Streams (deprecated, but free) or GoldenGate (requires extra license) does that.

Another option for reducing network traffic is to configure redo transport compression (requires the Advanced Compression option), but this could still produce much more network traffic compared to above solutions depending on the ratio of the changes related to the replicated objects.