https://omnidb.org/

https://github.com/OmniDB/OmniDB

https://www.2ndquadrant.com/en/resources/omnidb/

https://omnidb.org/index.php/en/downloads-en
https://omnidb.org/en/documentation-en/installation

aur
    omnidb-server, omnidb-app

https://blog.2ndquadrant.com/oracle-with-omnidb/