A way to link oracle DB to postgres DB for data transfer

I need to transfer  data that reside in my oracle database  to  my postgres
database on a specific interval.

So, is a way to create a link between the oracle DB and the postgres DB
for data transfer usage.

If I were to do it between 2 oracle database , I could have done via a
DBLINK.

I would greatly appreciate if someone could give me pointers on how to get
this done.

Thank you. Any help is greatly appreciated.

Regards
Zuhra Sanusi