As Willie Hardie, VP Oracle Database Produce Management, wrote in his blog post, Oracle Database 19.2 is available in LiveSQL since yesterday. You can try out scripts and such in a container. Of course, feature usage is restricted. But that’s a pretty nice thing for an early start with Oracle Database 19c.
Try it out on: liveSQL.oracle.com
And find more information in Willie Hardie’s post: https://blogs.oracle.com/oracle-database/oracle-database-19c-now-available-on-livesql