Heterogeneous Replication to Oracle subscriber

Hi,

I currently have "SQL Server 2008 R2" as Publisher/Distributor and I want to setup replication to Oracle database 12c (subscriber).

After adding Oracle database 12c as subscriber to a publication, sp_helpdatatypemap shows oracle destination versions only till 11g. Now, I am looking for help on... How to adding data mapping between "SQL Server 2008 R2" and Oracle database 12c.

Thank you.