This good news published in this link  Oracle database appliance (aka ODA) is one of the best appliance machines. ODA is already certified by 11g-12c EE and SE versions.

By this certification, the Hybrid Columnar Compression (HCC) functionality will be made available starting with the Database 18c release.

The Oracle Database Appliance 18.1 release is a parallel release that you can use to try Oracle Database 18.1. ODA 18.1 is not part of the ODA patch cycle.  Please refer to this ODA Blog Post on the ODA software stack on planned patch updates.

That information detail and  more please click here