Viewing a graph of the data a monitor collects

Use the Details graph page of the Show Monitor notebook to graphically view the information that a performance monitor has collected.

The graph will only display performance variables that had graphing set on when the monitor was created or have been changed to turn it on.

The Details graph does not have a defined scale, because the performance variables being graphed can have significant differences in their range of values. For example, the number of rows read might number in the thousands while the number of database connections could be less than ten. If you are monitoring both of these items it would be difficult to plot them on a scaled graph, so the Details graph provides you with a qualitative view of your performance variables. Tools are provided that enable you to perform a quantitative analysis of the individual performance variables shown on the graph.

Fields and controls

Authorities, privileges, and prerequisite tasks



To view a graph of the data a monitor collects:

  1. Select a performance monitor from the list below the Monitor name field.

  2. Open the Details graph page.

  3. View the data collected for the performance variables being monitored.

    The graph is a display of the data collected over time for multiple performance variables. The performance variables displayed are listed in the What section of the page.

    The graph displays five zones:

    " " The two red zones correspond to the upper and lower alarm thresholds.
    " " The two yellow zones correspond to the upper and lower warning thresholds.
    " " The center green zone represents acceptable values.

    Each zone is bounded by a split bar that allows you to expand or decrease the zone to adjust the size of its display.

    The time that performance variable data was captured is displayed below the graph.

    The slider bar with two moveable arms (located at the bottom of the page) can be moved to increase the time period displayed (by moving the arms apart), or decrease it (by moving them closer together).

    Drag and drop the vertical time line along the time axis to display performance variable values at different points in time. Initially, the time line is positioned at the latest sample time. If you release the time line at point that does not correspond to a time when an actual sample was taken, the line will snap to the nearest valid sample time. The values for the performance variables are shown in the Date and Time column on the Details page.

  4. View the data collected for a single performance variable. You can view detailed information on a single performance variable by selecting its graph line. The color for a variable was defined on the Graph settings page and corresponds to the color in the What section of this page. When you select a performance variable the following changes to the Details graph occur:
    " " The warning and alarm zone boundaries for the variable are listed in the Thresholds section.
    " " The zones on the graph appear bright when activated. Deactivated thresholds are dim.
    " " The sample times for the variable are displayed.
    " " Data for the variable is listed in the Value section.

    You can use the vertical time line to display the value of the performance variable at various times on the graph.

To view data from another performance variable, simply select it from the graph. The contents of the page will change to reflect its information.

Related information