Check if DBSPI-MeasureWare policy is deployed and enabled. This policy which is scheduled to run every 5 minutes is responsible for logging data into DBSPI datasource.
You may also need to check all the pre-requisites for monitoring DBSPI. i.e. Check if you DBSPI configuration is correct... <ov_instrumentation_dir>\dbspicam -d -v Check if necessary collector and metric policies are deployed and enabled.