Use historical navigation mode to
synchronize workspaces
and retain the same time period as you switch from one workspace to
another.
About this task
Whenever you open a workspace,
the latest values are retrieved
to the query-based views. Open or link to another workspace and the
data is retrieved at a different time. For performance analysis, you
can specify a time span to use for the workspaces that get opened.
Historical navigation mode is easily started and stopped, and you
can adjust the time span. Follow these steps to start historical navigation
mode.
Procedure
- Do either of the following:
- Click
Set historical
navigation mode at the end of the main toolbar.
- Click Select time span in
the view toolbar. The time span tool shows for views of attribute
groups that historical data collection has been configured for and
started or that are historical in nature.
- Set the time span.
- Select
Lock time span for Historical
Navigation.
- If you want to base
the time span on the Hub monitoring
server's clock and time zone, select Use Hub time.
- Click OK. From now on,
workspaces that are opened will display data according to the time
span settings, as indicated by the appearance of the Reset historical
navigation mode tool. The status bar also shows an indicator of the
time span.
- When you are ready to deactivate
historical navigation
mode, click
Reset
historical navigation mode, then clear 
Lock time span for Historical Navigation.
What to do next
Not all workspace views are able to
display a time span or
the range that you have specified. In this case, no values are displayed
and a message in the view's status bar says that the query assigned
to the view does not support a historical time range. It is likely
that historical data collection has not been configured for the attribute
group shown in the view or there is no historical data to report.
Exit historical navigation mode to remove this message. To see historical
data in this view, you must first configure historical data collection
for the attribute group referenced by the query, then start collection
and wait a sufficient period of time for historical data to be gathered
before displaying the view again.