Capacity Manager v8

PEM's Capacity Manager analyzes collected statistics (metrics) to generate a graph or table that displays the historical usage statistics of an object. It can also project the anticipated usage statistics for an object. You can configure Capacity Manager to collect and analyze metrics for a specific host, server, database, or database object.

You can tailor the content of the Capacity Manager report by choosing:

• Specific metrics to include in the report
• The time range over which the metrics were gathered
• A high or low threshold for the metrics analyzed

You can also specify a start and end date for the Capacity Manager report. If the end date of the report specifies a time in the future, Capacity Manager analyzes the historical usage of the selected object to extrapolate the projected object usage in the future.

To open Capacity Manager, in the PEM client, select Management > Capacity Manager. The Capacity Manager wizard opens, displaying a tree on the Metrics tab. On the Metrics tab, expand the tree to review the metrics for the node that you want to analyze. Select the metric to include it in your report.

Capacity Manager uses the aggregation method specified with the Aggregation list. Capacity Manager uses the aggregation method to evaluate and plot the metric values. Select from:

• Average — Use the average of the values recorded during the time period.
• Maximum — Use the maximum value recorded during the time period.
• Minimum — Use the minimum value recorded during the time period.
• First — Use the first value recorded during the time period.

To remove a metric from the Capacity Manager report, clear the box to the left of the name of a metric.

Move the slider next to Graph/chart metrics individually? to Yes to produce a separate report for each metric selected on the Metrics tab. If the option is set to No, all selected metrics are merged into a single graph or table.

Select Generate to display the report onscreen (accepting the default configuration options), or use the Options tab to customize sampling boundaries, report type, and report destination. The times displayed on the Options tab are from the time zone where the PEM client resides.

Use the fields in the Time Period box to define the boundaries of the Capacity Manager report:

• Use the Period list to select the type of time period to use for the report. You can select:

After specifying the type of time period for the report, select from other options in the Time Period box to define the time period for the report:

• Use the date and time selectors next to the Start time field to specify the starting date and time of the sampling period. Or select the number of historical days of data to include in the report. The date and time specified in the Start time field can't be later than the current date/time.

  By default, Capacity Manager selects a start time one week prior to the current date and time.

• The end boundary for the report can be a time, a number of days in the future, or the point at which a selected metric reaches a specified threshold value. Use the date and time selectors next to End time to specify an end boundary for the report. Or select the number of extrapolated days of data to include in the report. The time specified in the End time field must be later than the time specified in the Start time field.

  If you select an end date and time in the future, Capacity Manager uses historical usage information to extrapolate anticipated future usage. Since the projected usage is based on the sampling of historical data, the accuracy of the future usage trend improves with a longer sampling period.

  To specify a threshold value, use the list in the Threshold field to select a metric, an operator (Exceeds or Falls below), and a target value for the metric. If you choose to define the end of the report using a threshold, the Capacity Manager report terminates when the value for the selected metric exceeds or falls below the specified value.

The cm_max_end_date_in_years configuration parameter defines a default time value for the end boundary of a Capacity Manager report. If you specify a threshold value as the end boundary of a report and the anticipated usage of the boundary isn't met before the maximum time passes, the report terminates at the time specified by the cm_max_date_in_years parameter. By default, cm_max_end_date_in_years is 5. You can use the Server Configuration dialog box to modify the value of cm_max_end_date_in_years.

The fields in the Report box specify the report type and destination. Use the Include on report options to specify the type of report produced by Capacity Manager:

• Select Graph to display the report in the form of a line graph in the PEM client window.
• Select Table of data to display a table containing the report data in the PEM client window.
• Select Graph and table of data to display both a line graph and a data table in the PEM client window.

Use the Report destination options to set where to display or save the report:

• Select New tab to display the report on a new tab in the PEM client. You must select New tab to display the first generation of a Capacity Manager report. For subsequent reports, you can select Previous tab.
• Select Previous tab to reuse a previously opened tab when displaying the report.
• Select Download the report as a file and specify a file name to write the report to the specified file.

After you specify the report boundaries and select the type and destination of the Capacity Manager report, select Generate to create the report.

Reports saved to file are stored as HTML. You can review a Capacity Manager report with any web browser that supports scalable vector graphics (SVG). Browsers that don't support SVG can't display a Capacity Manager graph and might include unwanted characters.

Capacity Manager templates

After defining a report, you can save the definition as a template for future reports. All PEM users can access Capacity Manager report templates. To save a report definition as a template:

1. Use the Metrics and Options tabs to define your report.
2. Select Save.
3. In the Save Template dialog box, Provide a report name in the Title field and select a location to store the template in the tree.
4. Select OK.

When creating a report, you can use Load Template to browse and open an existing template. Once opened, you can modify the report definition and save it again, either as a new template or by overwriting the original template.

Select Manage Templates to open a dialog box that lets rename or remove unwanted templates.

Capacity Manager metrics - reference

The Capacity Manager metrics available vary by platform and are subject to change. The available metrics can include the metrics described in the table.

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• Capacity Manager templates
• Capacity Manager metrics - reference