autoupgrade tool in oracle

 MOS Doc ID : AutoUpgrade Tool (Doc ID 2485457.1)

https://mikedietrichde.com/2019/04/29/the-new-autoupgrade-utility-in-oracle-19c/

https://docs.oracle.com/en/database/oracle/oracle-database/19/upgrd/about-oracle-database-autoupgrade.html#GUID-3FCFB2A6-4617-4783-828A-41BD635FC88C