This metric represents the average number of users that have made a call to the database and that are waiting for an event, such as an I/O or a lock request, to complete. If the number of users waiting on events increases, it indicates that either more users are running, increasing workload, or that waits are taking longer, for example when maximum I/O capacity is reached and I/O times increase.
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 |
Evaluation and 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" |
Not Defined |
After Every Sample |
> |
10 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Application" |
Not Defined |
After Every Sample |
> |
10 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Cluster" |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Commit" |
Not Defined |
After Every Sample |
> |
30 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Concurrency" |
Not Defined |
After Every Sample |
> |
10 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Configuration" |
Not Defined |
After Every Sample |
> |
10 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Network" |
Not Defined |
After Every Sample |
> |
10 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Other" |
Not Defined |
After Every Sample |
> |
10 |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "Scheduler" |
Not Defined |
After Every Sample |
> |
Not Defined |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "System I/O" |
Not Defined |
After Every Sample |
> |
Not Defined |
Not Defined |
3 |
Not Defined |
|
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
class: "User I/O" |
Not Defined |
After Every Sample |
> |
Not Defined |
Not Defined |
3 |
Not Defined |
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.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
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