6 Exadata Metrics
Accessing Exadata Metrics
For a complete list of metrics available for the Oracle Exadata Database Machine and related targets, see the following reference manuals for the plug-ins that together provide Exadata support:
-
Oracle Exadata in Oracle® Enterprise Manager Oracle Database Plug-in Metric Reference Manual
Accessing Exadata Metrics
To access the available Exadata Metrics:
- From the Targets menu, select Exadata.
- On the Oracle Exadata Database Machines page, select an Exadata Database Machine from the list.
- From the Target Navigation tree, select a target of interest.
- From the target's home page, select the target type name, then Monitoring, and then All Metrics.
Example Metrics
The following metric sections provide examples of the available metrics and how they are displayed.
Aggregated Exadata FlashDisk and HardDisk Metric
This metric category contains metrics that are aggregated over either the hard disks or flash disks in a Exadata Storage Server. Selecting this metric from the All Metrics page generates a high-level summary, as shown in the image:
Expand the Aggregated Exadata FlashDisk and HardDisk Metric in the All Metrics page to show a variety of metric details, such as Average CellDisk Read Throughput, which gives an indication of the average number of bytes read from the Exadata Storage Server disk, or Total CellDisk I/O Load, which gives an indication of the total input/output load to the celldisk.
Average CellDisk Read Throughput:
Total CellDisk I/O Load:
Exadata Storage Server Metric
This metric category contains the performance metrics collected at the Exadata Storage Server level for each Exadata Storage Server, such as CPU utilization and memory utilization. Selecting this metric from the All Metrics page generates a high-level summary, as shown in the image:
Expand the Exadata Cell Metric in the All Metrics page to show a variety of metric details, such as CPU Utilization, which provides information about the CPU utilization, or Disk I/O Objective, which provides the optimization objective which IORM is configured to achieve (for example, "Low Latency" or "Balanced" for OLTP-oriented databases, or "High Throughput" for data warehouses).
CPU Utilization:
Disk I/O Objective:
Exadata Key Performance Indicators Metrics
With Enterprise Manager 13c Release 4 Update 4 (13.4.0.4) or higher version, you can access the Key Performance Indicators Metrics for Exadata Storage Servers and Exadata Storage Server Grid to view the metrics of the key parameters as listed in the image below for an Exadata Storage Server Grid:
The following is an example of the Average Hard Disk IO Load metric of an Exadata Storage Server:
The following is an example of the Flash Disk IO Health Exceptions metric of an Exadata Storage Server:
