This metric shows the sum of I/O throughput for all disks. The data is displayed for all instances that are part of the cluster. This gives an indication of the disk group I/O performance in terms of read and write.
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.
Target Version |
Collection Frequency |
10.1.0.x; 10.2.0.x; 11.1.0.x; 11.2.0.x |
Every 15 Minutes |
To calculate the average throughput of each disk, the total number of bytes read and written is divided by the total I/O time during the collection interval. The data is displayed for all instances that are part of the cluster.
No user action is required.
Related Topics
About Alerts
About the Metric Detail Page
Editing Thresholds
Understanding Line Charts
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