This metric displays disk mode status (offline and online). A critical warning alert is generated if any of the disks go offline.
You can change the threshold limit.
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 15 Minutes |
After Every Sample |
= |
Not Defined |
OFFLINE |
1 |
Disk %dg_name%.%disk_name% is offline. |
For this metric you can set different warning and critical threshold values for each unique combination of "Disk Group Name" and "Disk Name" objects.
If warning or critical threshold values are currently set for any unique combination of "Disk Group Name" and "Disk Name" objects, those thresholds can be viewed on the Metric Detail page for this metric.
To specify or change warning or critical threshold values for each unique combination of "Disk Group Name" and "Disk Name" objects, use the Edit Thresholds page. See Editing Thresholds for information on accessing the Edit Thresholds page.
This metric is collected with the help view column mode status from GV$ASM_DISK for 10gR 1 and GV$ASM_DISK_STAT for 10g Release 2.
Try to bring the disk online. Currently Enterprise Manager does not support this feature.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
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