Database CPU Time (%)

Description

This metric represents the percentage of database call time that is spent on the CPU. Although there is no ‘correct’ value for this metric, it can be used to detect a change in the operation of a system, for example, a drop in Database CPU time from 50% to 25%. ('No correct value' means that there is no single value that can be applied to any database. The value is a characteristic of the system and the applications running on the system.)

Metric Summary

The rest of the information in this section is only valid for this metric when it appears in either the Enterprise Manager Grid Control or the Enterprise Manager Database Control (if applicable).

The following table shows how often the metric's value is collected and compared against the default thresholds. The 'Consecutive Number of Occurrences Preceding Notification' column indicates the consecutive number of times the comparison against thresholds should hold TRUE before an alert is generated.

Target Version

Server Evaluation Frequency

Collection Frequency

Upload Frequency

Operator

Default Warning Threshold

Default Critical Threshold

Consecutive Number of Occurrences Preceding Notification

Alert Text

10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x

Every Minute

Not Defined

After Every Sample

<

Not Defined

Not Defined

2

Generated By Database Server

Data Source

Not available

User Action

Investigate the change is CPU usage by using Automatic Database Diagnostic Monitor (ADDM). ADDM reports are available from a number of locations including the Database Home page and Advisor Central. Examine the report for increased time spent in wait events.

Related Topics

About Alerts

About the Metric Detail Page

Editing Thresholds

Understanding Line Charts