Setting up a reporting database
To work with reports, set up a reporting database. You can enable the Derby demonstration database for reports. However, to produce regular reports for a production cluster, you must use a supported external database.
Without the Derby database or an external database, you cannot generate reports or view the Rack View on the cluster management console. If you do not require these functions, you can manually disable individual data loaders after installation. See Disabling data collection for individual data loaders.