If I only wanted to do multi-master replication of just a few tables (<5) between two Oracle databases in Oracle 19c here in 2023, without having to pay for the Golden Gate license, what are my options?

I want something like the "Advanced Replication" feature from the older versions of Oracle (I remember using it back in Oracle v7), but I understand this feature was desupported long ago. Then there was Oracle Streams, CDC, and updatable Materialize Views... all of which seemed to be desupported now as of Oracle 19c in favor of doing all replication activities with Golden Gate.

I just discovered "Golden Gate Free", but this is limited to databases less than 20G in size. My database is bigger.

I only need to do replication between two databases for about 3 tables for about a year while we align other activities to migrate fully off of one of those databases. But it must support OLTP between the databases and keep the 3 tables in sync in "near real time". In other words, both databases need to allow concurrent read/write of these tables. And ideally, conflict resolution should be done via a "latest time stamp wins" approach.

What would you do if you were me?

Thanks,
Jack