This metric represents the percentage of time that database calls spent waiting for an event. 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, an increase in Database Time Spent Waiting from 50% to 75%. ('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.)
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 |
Key |
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 |
class: "Administrative" |
Every Minute |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Application" |
Every Minute |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Cluster" |
Every Minute |
Not Defined |
After Every Sample |
> |
50 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Commit" |
Every Minute |
Not Defined |
After Every Sample |
> |
50 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Concurrency" |
Every Minute |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Configuration" |
Every Minute |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Network" |
Every Minute |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Other" |
Every Minute |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Scheduler" |
Every Minute |
Not Defined |
After Every Sample |
> |
Not Defined |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "System I/O" |
Every Minute |
Not Defined |
After Every Sample |
> |
Not Defined |
Not Defined |
3 |
Generated By Database Server |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "User I/O" |
Every Minute |
Not Defined |
After Every Sample |
> |
Not Defined |
Not Defined |
3 |
Generated By Database Server |
For this metric you can set different warning and critical threshold values for each "Wait Class" object.
If warning or critical threshold values are currently set for any "Wait Class" object, those thresholds can be viewed on the Metric Detail page for this metric.
To specify or change warning or critical threshold values for each "Wait Class" object, use the Edit Thresholds page. See Editing Thresholds for information on accessing the Edit Thresholds page.
Not available
View the latest Automatic Database Diagnostic Monitor (ADDM) report. For a more detailed analysis, run ADDM from the Advisor Central link on the Database Home page. ADDM will highlight the source of increased time spent in wait events.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
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