Segments Not Able to Extend Count

Description

This is a database-level metric. For cluster databases, this metric is monitored at the cluster database target level and not by member instances.

This metric checks for segments that cannot allocate an additional extent. If the number of segments is greater than the values specified in the threshold arguments, a warning or critical alert is generated.

Metric Summary

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 24 Hours

After Every Sample

>

0

Not Defined

1

%value% segments in %name% tablespace unable to extend.

Multiple Thresholds

For this metric you can set different warning and critical threshold values for each "Tablespace Name" object.

If warning or critical threshold values are currently set for any "Tablespace 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 "Tablespace Name" object, use the Edit Thresholds page. See Editing Thresholds for information on accessing the Edit Thresholds page.

Data Source

After checking for the largest chunk free space in the tablespace, this is the number of segments that cannot allocate an additional extent.

For additional information about the data source, refer to the problemTbsp.pl Perl script located in the sysman/admin/scripts directory.

User Action

Perform one of the following:

Related Topics

About Alerts

About the Metric Detail Page

Editing Thresholds

Understanding Line Charts