|Metric Name||Description||Available since|
|HTTP Availability||Like the URL Availability metric and the URL Certificate metric, this metric measures the availability of a URL and the remaining validity (in days) of an SSL certificate. However, HTTP Availability offers more functionality than the URL Availability metric and the URL Certificate metric. The specified URL is called by a data collector running on a Simple Diagnostics Agent in the collection group.||FRUN 2.0 FP02|
|RFC Availability||Measures the availability of an application server instance of an SAP system or the availability of a message server port of an SAP system. This RFC Availability metric offers more functionality than the general metric of the same name.|
A Simple Diagnostics Agent in the collection group performs a ping to an application server instance or to a message server port of an SAP system.
|FRUN 2.0 FP03|
|Combines the functionality of the general metrics TCP Port Availability and Host Availability. The TCP Availability metric can measure the availability of a TCP port or the availability of a host. It offers more functionality than the TCP Port Availability and Host Availability metrics. A Simple Diagnostics Agent in the collection group performs a TCP ping either to the port of a host or to the host. You specify the host by name or IP address.||FRUN 2.0 FP03|
You can specify the following parameters for Availability metrics:
Define the time interval (in minutes, hours, or days) at which a Simple Diagnostics Agent measures the metric. For example, if you set a collection frequency of one minute, the Simple Diagnostics Agent measures the metric once each minute.
A threshold defines when a metric receives a certain status, such as OK (green) or Critical (red). Availability metrics have four key performance indicators (KPIs). A threshold is available for each of these KPIs.
Collection Frequency: 1 minute
Response Time: on
The metric status is set to yellow if the response time is greater than or equal to 2000 milliseconds but less than 4000 milliseconds 10 consecutive times. (10 = Delay/Collection Frequency)
The metric status is set to red if the response time is greater than or equal to 4000 milliseconds 10 consecutive times. (10 = Delay/Collection Frequency)
How is the metric status calculated when one or multiple thresholds are switched on?
The metric status is calculated according to the worst-case principle: If at least one of the activated thresholds or the Rating threshold returns red, the metric status is set to red.
If neither an activated threshold nor the Rating threshold returns red, but at least one of these thresholds returns yellow, the metric status is set to yellow.
If all activated thresholds and the Rating threshold return green, the metric status is set to green.
If you don't maintain a threshold for a metric, an alert is generated when the metric status is set to red by the Health Monitoring app. If you maintain a threshold for a metric, an alert is generated when the defined threshold is reached. Alerts are displayed in the Health Monitoring and Alert Management applications.
The following alert settings are available:
Availability Alerts Generated from Availability Metrics
Availability alerts can be generated from Availability (HTTP Availability, RFC Availability, and TCP Availability). A metric is reported to Service Availability Management as an unplanned outage if the following prerequisites are met:
An active service definition has been created for the technical system in Service Availability Management as explained here.