This is a short summary discussing what the options are for integrating Oracle RDBMS into Kafka, as of December 2018. For a more detailed background to why and how at a broader level for all databases (not just Oracle) see this blog and these slides.
What techniques & tools are there? Franck Pachot has written up an excellent analysis of the options available here.
As of December 2018, this is what the line-up looks like: