This metric shows the unused capacity of the disk group in megabytes. It gives an indication of the free space available in a disk group.
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 Minutes |
After Every Sample |
<= |
Not Defined |
Not Defined |
1 |
Total free size for Disk Group %dg_name% has fallen to %value% (MB). |
For this metric you can set different warning and critical threshold values for each "Disk Group Name" object.
If warning or critical threshold values are currently set for any "Disk Group Name" 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 "Disk Group Name" object, use the Edit Thresholds page. See Editing Thresholds for information on accessing the Edit Thresholds page.
This metric is collected from the column FREE_MB in the view V$ASM_DISKGROUP for 10g Release 1 and the V$ASM_DISKGROUP_STAT view for 10g Release 2.
Consider adding more disks to the disk group or deleting existing files in the disk group.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
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