Oracle19c New Features

Ability to Create a Duplicate of an Oracle Database Using DBCA in Silent Mode You can now create a duplicate of an Oracle database by using the createDuplicateDB command of DBCA in silent mode. This feature enables developers to work on identical copies of an Oracle database. Support for Dry-Run Validation of Oracle Clusterware Upgrade

GoldenGate 18c In-Database Row Archival Process

Oracle 18c now has the ability to do in-database row archival native to the database. This could be good for databases that have both active data and archive data in the same database. Test code additional    

Cluster Verify Utility 18c

To find any errors prior to install execute the CLUVFY Cluster Verify Utility Oracle 18c cluvfy -stage pre crs -n allnodes