OIC private end point

Hi Team,

We are using OIC3 for SaaS. We have created private end point in OIC for our OCI VCN private subnet. We are able to connect from OIC adapters to Databases in our vcn using the private end point.

1) Can we use the same private end point to connect to Onpremise DB(private network) as well. We have site to site connectivity vpn established from VCN to Onpremise.
2) Does private end point support oracle database adapter which will be used to connect to onpremise DB.

Thanks,
Satish