This metric will return 0 if the instance is down, and 1 if the instance is up. If the instance is down, the reason 'Abnormal Termination or Instance Shutdown', will appear in the State Description column.
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 |
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 |
Every 15 Seconds |
Not Uploaded |
= |
Not Defined |
0 |
1 |
The instance is down, and health check reported: %text%. |
Memory-mapped file $ORACLE_HOME/dbs/hc_
Consult the corrective action on the database home page. Corrective action could include starting up the database.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
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