Logs and Troubleshooting › 'No Data' Message in Views

'No Data' Message in Views

Symptom:

Several views on the dashboard are empty. A message states, "No Data to Display".

Solution:

A graph or table view on a dashboard can show "No Data to Display" for many reasons, such as the following:

• The data source for the view has not been installed or has not been registered.

  Each view receives data from a single data source. Some view containers appear on dashboards even if the corresponding data source is not registered. They are always empty until the data source is registered.

  You can change display settings so that such views are never displayed in dashboards. For more information, see Disable View Suppression.

  Tip: You can often determine which data source is associated with the view by clicking the ? button on the view.

• The data source is registered, but it has been temporarily disabled.

  A disabled data source is not polled for data. An administrator can edit the data source to enable it. For more information, see Register a Data Source.

• The view type requires editing before data can be displayed.

  Some types of view do not have default settings. For example, multiviews and multitrend views require customization before they display any data.

• No data is available for the selected time range. To test this theory, select a different time range.
• Not enough time has transpired since polling started on the devices that are selected for reporting.

  If the polling interval is fairly long, the first data point can take a little longer to appear. Polling rates are set in the data sources.

• A service is not running.

  If the device manager service is not running, you are likely to see the "no data" message. Instructions for checking the status of a CA Performance Center daemon are provided in the Installation Guide.

• The current group does not contain items of the required type for this view.

  The group of items whose data is reported on the dashboard is shown above the Time Period selector. Check the view: is this Server report trying to show data from a group of routers?

• The group is new or has recently been changed.

  Check group membership. A group rule might be misconfigured.

  If your user account has the required role right, edit the view to select another group context. Or click the Group Filter link above the Time Period selector and select another group context for the dashboard.

• The user account of the logged-in user does not have permission to view monitored items that have reported data. For more information, see How to Create a User Account.
• The data source has not properly synchronized with CA Performance Center. For more information, see Data Source Synchronization Failed.
• Components were not discovered, or managed item discovery failed.

  This problem is data source-specific, so consult the online Help for the data source. For a Data Aggregator data source, you can check inventory discovery history. On the Discovery Profiles List page, select the Discovery profile that you created for the initial discovery and click the History button.

• Metric families were not configured or enabled.

  A Data Aggregator data source automatically applies predefined (factory) monitoring profiles to the predefined collections, such as the All Routers collection. However, custom groups and custom collections are subject to misconfigured custom monitoring profiles.

• The database query timed out. Network connectivity issues between the CA Performance Center server and the data source can cause this problem.

NetQoS--NPC--Troubleshooting--No Charts or Images are Visible

Symptom:

Some charts or images do not appear in CA Performance Center. A red X appears to indicate that the chart or image is broken.

Solution:

You are using the secure HTTP (HTTPS) when running CA Performance Center in Internet Explorer (IE). In IE, the Transport Layer Security (TLS) setting needed for HTTPS is set to only TLS 1.0 by default. To view the broken charts or missing images, turn on TLS 1.1.

Follow these steps:

1. Click Tools at the top of the browser, or click the gear icon at the top right.
2. Click Internet Options.
3. Click the Advanced tab, and select the TLS 1.1 checkbox.
4. Click Apply.

   The TLS settings are saved.