Error "content of the database manager configuration file is not valid"

After migrating your DB2 database to a higher version, you get an error message when you run the updatedb or enablefeature command.

Problem

After migrating your DB2 database, you see the following error:
SQL5050C The content of the database manager configuration file is not valid.
Error in MassLoading, please check logs for details.

Solution

Ensure that you successfully complete steps 6 to 10 of Migrating your database from DB2 V9.5 to DB2 V9.7. Make sure that the XML file is updated properly and that the SQL command runs successfully.