Oracle Database 23ai is introducing many new features over the Release Updates. Most of those changes can be tracked via https://docs.oracle.com/en/database/oracle/oracle-database/23/nfcoa/release_updates.html . However, not all of them are documented, and sometimes, I find interesting stuff on https://oradiff.oracle.com, like this one: As we can see, the COMPATIBLE parameter is now instance modifiable and ISSYS_MODIFIABLE has changed …
