Set the user ID through which a broker or Configuration Manager accesses its database tables by using the DataSourceUserID parameter on the mqsicreatebroker or mqsicreateconfigmgr command.
You cannot modify this parameter once the component has been created. Therefore you must save the database tables, delete the component, and create a new one, specifying the new user ID. The new component uses the data in the saved tables, with the updated database user ID.
To ensure that you preserve the data held in these databases, follow the steps detailed in the following tasks.