Backing up the project administration database (talend_administrator) is mandatory before starting the migration process.
Before backing up the project administration database, pause all currently active tasks in Talend Administration Center. For more information, see Pausing tasks in Talend Administration Center.
If you migrate from database X to database X (ex: from MySQL to MySQL), the database backup is performed directly in the web application in the first step of the migration process. For more information on how to migrate the Talend Administration Center database, see Upgrading the administration database.