Releases - Oracle Database

Oracle has fundamentally changed its release and support model. With the introduction of (formerly 23c), Oracle is signaling that "long term stable" and "cutting edge AI" can now coexist.

19c is the last release of the 12.2 code line (12.2 → 18c → 19c). It is the most stable, most deployed Oracle version in production today. If you are running 11g or 12c, 19c is your safe, low-risk upgrade target. oracle database releases

21c was an innovation release that very few customers adopted. Its key features (native blockchain tables, JSON data type improvements, in-database JavaScript) were absorbed into 23c/23ai. Oracle has fundamentally changed its release and support