Oracle's Banking Solution.. We don't have any clients using it here, but I know that thing..
Why not? In the document named "FLEXCUBE Information Server Utility Oracle FLEXCUBE Universal Banking Release 12.3.0.0.0[March] [2018 }", Goldengate configuration is given.. Even the list of tables to replicated is given there.. So you may give it a try. That 's for sure..
--> Ref
https://docs.oracle.com/cd/E80148_01/PDF/Installation/FLEXCUBE_UBS_Installation/FCUBS%20Components/FLEXCUBE%20FIS/FLEXCUBE_Information_Server.pdfBytheway, we have our own core banking application called Symphony.. We have running it on PREM, on OCI and on GCP.. We have auto scale configuration, both for scale out and scale in.. You may want to check that as well ->
https://www.gtech.com.tr/en/symphony-banking