Migrating data from 11G Linux to 19C on Windows
Always exclude them. They contain version and instance-specific metadata that should not be migrated. When performing this kind of migration (porting applications to new DB versions), only ever export/import your application schemas and user accounts. Never do a &quot;full&quot; export/import.
If you have already overwritten some data dictionary objects and experienced errors, you may need to validate the state of your dictionary (see here: https://oracle-base.com/articles/misc/hcheck-sql-check-known-data-dictionary-problems) and consider a restore from backup to a point prior to your import.