You plan to upgrade your database(s) to Oracle Database 18.104.22.168,?
You did run the preupgrd.sql including the preupgrade package in your current database already?
But in the preupgrade.log you’ll see the following ERROR:
ERROR: --> Invalid Oracle supplied table data found in your database. Invalid data can be seen prior to the database upgrade or during PDB plug in. This table data must be made valid BEFORE upgrade or plug in. - To fix the data, load the Preupgrade package and execute the fixup routine. For plug in, execute the fix up routine in the PDB. @?/rdbms/admin/utluppkg.sql SET SERVEROUTPUT… Continue reading...