Viewing system health

Statistics information for a DB2® subsystem can be viewed as numerical values and percentages on various Statistics Details windows or as snapshots in graphical format.

Viewing DB2 Statistics explains the Statistics Details windows.

To view Statistics information in graphical format you can do one of the following:

• In the System Overview window, select the DB2 subsystem in the folders pane and then click the System Health toolbar button ().
• You can also use the menu bar or pop-up menu: click the DB2 subsystem in the folders pane, then click Selected > Monitor > System Health on the menu bar or Monitor > System Health on the pop-up menu.

If you are not connected to the selected DB2 subsystem, you are prompted to log on.

The System Health window is displayed, split into the following panes:

• The folders pane on the left lists one or more of the following data groups:
  • The System Overview data group, which contains links to data views in data groups that you have defined. These linked data views are displayed as performance graphs on the Data Views page of the System Overview window. They are refreshed at the refresh rate that you specified for the DB2 subsystem in the System Overview window.
  • Any data groups and data views that you have defined.
• The contents pane on the right displays the contents of the selected data group.

You can arrange one or more counter categories, such as Hit ratios or Physical locks (P-locks), as data views in a data group. Each data view consists of a graphical representation, a legend, and a report of the counters selected for the counter category. Each data group can contain a different selection and arrangement of data views.

This section uses scenarios to help you understand and get started with system health. In addition, it describes the tasks that you are most likely to perform in system health.