The managed application system (MAS)

Each running CICS system that is being managed by CICSPlex® SM is known as a managed application system (MAS). CICSPlex SM can manage the systems listed in CICS system connectivity.

If a MAS belongs to a CICS/XRF pair, it must be the active region.

All the MASs within a CICSplex are managed by the same CICSPlex SM Address Space (CMAS) or the same group of CMASs.

Figure 2. MASs and their CMAS. Each of these components is described in this section.
The diagram shows a CMAS which has links to a local MAS, All the MASs belong to the same CICSplex .

Each MAS contains CICSPlex SM agent code that implements CICSPlex SM function, such as data collection, for the CMAS by which it is managed. For example, if resource monitoring is active for a particular MAS, agent code in the MAS monitors the selected resources and feeds the resulting data to the CMAS.

The MASs within a single CICSplex do not have to be explicitly connected to each other for CICSPlex SM-specific communication. However, CICS connections required in support of transaction routing and function shipping are still required.

MASs can be defined and managed as individual CICS systems or grouped into system groups within the CICSplex. Each system group is one or more CICS systems that you want to manage as a unit subset of the CICSplex. System groups are described in Identifying system groups.

In CICS Transaction Server for z/OS, Version 3 Release 1 all MASs are local, that is they run on the same MVS image as the CMAS by which they are managed. You do not need to define an explicit link between the CMAS and the local MAS. For local MASs, system-management data is accumulated in data-space caches and is communicated to the CMAS via the Environment Services System Services (ESSS) address space (which is described in topic Environment Services System Services (ESSS)).

Start of changeRemote MASs running on a different MVS image from the managing CMAS or on other operating systems such as Windows or OS/2 are not supported in CICS Transaction Server for z/OS, Version 3 Release 1 or later.End of change

A MAS can be set up as a CICSPlex SM Web User Interface server. In this case, the CICS release level of the MAS and the CICSPlex SM Web User Interface server must be the same.

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