Availability Monitoring 

It is not possible to define availability uniquely with regard to IT components. In this way, availability can mean the existence of a process at operating system level. Other definitions of availability can include, for example, the provision of a service within a certain time or the average time for performing a user action between 08:00 and 18:00.

SAP provides different mechanisms for availability monitoring. The mechanisms have the following in common:

·        The availability information is usually technical.

·        The availability check is performed – once it has been set up – periodically and without user interaction.

·        The result of the check is reported in the central CCMS and therefore also in the Solution Manager. This means that an availability monitor can be set up centrally that displays the status of the individual components. It is also possible to implement automatisms and notifications using auto-reactions.

·        Availability is checked at application-level with the Generic Request and Message Generator (GRMG).

With the GRMG, the central system periodically calls a GRMG application using a URL. The GRMG application performs component-specific checks and returns the result of the checks to the central system.

If a GRMG check is not possible or not meaningful for a component, it is possible at least to prove the existence of the corresponding process at operating system level. A check of this type defines the required (but not sufficient) prerequisite for the component availability. The check is performed by the SAP program SAPOSCOL and the SAPCCMSR agent.

For more information about how you can use the availability monitoring, see the following tasks:

Availability: Setting Up a GRMG Scenario

Monitoring System Availability with the NWA

Availability Monitoring in the Central Monitoring System

Checking the Availability Without a Central System