Copying OData data to Heroku Postgres cannot be simpler. You just need to perform the following three simple steps.
Specify necessary connection parameters for OData.
Specify necessary connection parameters for Heroku Postgres.
Skyvia supports secure connections to Heroku Postgres.
Select OData objects to replicate.
Just select check boxes in a list of OData objects (e.g. entities). If necessary, you can tweak it in more details - replicate only part of OData fields and filter data to replicate.
You don't need to prepare the Heroku Postgres database - Skyvia creates the tables corresponding to the OData objects - entities - automatically.
Skyvia can more than just create a copy of the OData data in Heroku Postgres - it can keep this copy in an up-to-date state automatically. All you need is to configure a schedule when to update the Heroku Postgres replica database.
With Skyvia you can copy all the data from a OData object or disable replication for some OData object fields. You can also configure filters for data to replicate.
If you need more than just to copy data from OData to Heroku Postgres, you may use Skyvia's powerful data import functionality. Skyvia's data import tools will correctly extract OData data, transform it, and load to Heroku Postgres when Heroku Postgres tables have different structure than OData objects.