Configure summarization and pruning for the Tivoli® Data Warehouse to aggregate data and
keep the database size at a manageable level.
Before you begin
The summarization and pruning agent must be installed, configured,
and started as described in the
IBM Tivoli Monitoring Installation
and Setup Guide.
Your
user ID must have Configure History permission to open the History
Collection Configuration window. If you do not have this permission,
you will not see the menu item or tool for historical configuration.
About this task
Although summarization and pruning is not mandatory for warehoused
data, it keeps the database from growing to an unwieldy size and minimizes
the amount of data that gets retrieved to the Tivoli Enterprise Portal. Even if data collection
for an attribute group has not been configured, you can set up summarization
and pruning. If no collections have been created and distributed for
an attribute group, no data goes to the warehouse, and summarization
and pruning does not take place.
Procedure
- If the History Collection Configuration window is not open,
click History
Configuration.
- Select a Monitored Application from
the tree.
- Review the attribute groups in the table. If
summarization and pruning has already been configured for an attribute
group, the values will be shown in the summarization and pruning cells.
Collapse the tree, drag the borders, or scroll the table right to
see all the cells.
- Select one or more attribute groups to
configure. You can select multiple groups with Ctrl+click, or Shift+click
to select all groups from the first one selected to this point. The settings of the first group selected continue to display,
regardless of the settings in any of the other selected groups. This
enables you to adjust the configuration controls once and apply the
same settings to all selected attribute groups. Use the Clear
all button if you want to clear all the fields and start
over.
- In the Summarization area, select
the check box for every time period to be aggregated: Yearly, Quarterly,
Monthly, Weekly, Daily, and Hourly.
- In the Pruning area, select the
check box for every time period to be pruned: Yearly, Quarterly, Monthly,
Weekly, Daily, and Hourly. If you also want to keep the original data
samples, select the Detailed data check box.
In the corresponding fields, specify the number of days, months, or
years to keep the data.
- Click Apply to save the configuration
for the attribute groups that were selected. The
summarization and pruning cells for the attribute group are updated
to reflect the new settings.
What to do next
The next time summarization and pruning takes place, the
summarization and pruning agent applies the configuration to the long-term
data stored in the data warehouse. Wait for the next scheduled time
period to elapse before expecting to see any summarized data.