I have just launched the EBS vision 12.2.9 image in Oracle Cloud and I have observed that it now comes with 19c (19.6) DB.
[oracle@apps OPatch]$ ./opatch lsinventory|grep 'Release' Patch description: "Database Release Update : 184.108.40.206.200114 (30557433)" [oracle@apps scripts]$ sqlplus '/as sysdba' SQL*Plus: Release 220.127.116.11.0 - Production on Sun May 24 16:29:11 2020 Version 18.104.22.168.0 Copyright (c) 1982, 2019, Oracle. All rights reserved. Connected to: Oracle Database 19c Enterprise Edition Release 22.214.171.124.0 - Production Version 126.96.36.199.0
In earlier post, I have shown how to connect to EBS DB in cloud using SQL Developer: