During migration, error entries in the db2diag.log file (database not migrated) appear even when migration is successful, and can be ignored.
|When using Warehouse Control Database Management, errors are logged |in the SQLLIB\LOGGING directory. The |IWH2RGn.LOG files contain any error information. If |there is an error you must correct the error, delete the control database and |start again. In the case of an existing control database, this means |you need to use the backup copy.