The DXP database upgrade process has been enhanced with a suite of verification checks that are executed before any data modifications are made.
These checks have minimal impact on the overall upgrade process execution time, but they can be optionally disabled with the property upgrade.database.preupgrade.verify.enabled=false
Benefits
It can be frustrating when a database upgrade process executes a large amount of modifications to the system and then fails due to a misconfiguration, prompting the need to restore the database and restart the process. Now the database upgrade process will perform a series of configuration checks and report them to the user before modifications are needed. This prevents the need to always restore the database or document library before re-running the upgrade. The upgrade report will still be generated if the preupgrade checks fail, and provide details of any issue.