This metric returns a value of "1" if the Listener is up and running; it returns a 0 if the Listener is unavailable.
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 |
|
All Versions |
Every 5 Minutes |
After Every Sample |
= |
Not Defined |
0 |
1 |
The listener is down: %oraerr%. |
This metric is derived from the STATUS command in the Listener Control Utility. For more information, see the OracleŽ Database Net Services Administrator's Guide 10g Release 2 (10.2).
When the listener is down, users cannot access the database or other services on this host. Review the troubleshooting information in OracleŽ Database Net Services Administrator's Guide 10g Release 2 (10.2).
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
Copyright © 1996, 2009, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its affiliates.
Other names may be trademarks of their respective owners.