Articles by Rui Miguel Feio

A member is a specific function (one or more routines) of a multisystem application that is joined to XCF and assigned to a group by the multisystem application. A member concept applies to all authorized routines running in the address space that issued the IXCJOIN macro service. Only for termination […]

An application in a XCF context is a program that has various functions distributed across z/OS systems in a multisystem environment. An application or subsystem might consist of multiple instances, each running on a different system in the same sysplex. Typically, each instance performs certain functions for the application as […]

XCF – a sysplex couple data set to store information about its systems, the XCF groups and members running in the sysplex, and general status information. CFRM – The Coupling Facility Resource Management (CFRM) couple data set holds the CFRM policy, which allows you to define how MVS is to […]

XCF provides the services that allow multisystem application functions (programs) on one z/OS system to communicate with functions on the same or other z/OS systems. The communication services are provided through authorized assembler macros and are as follows: Group services Signalling services Status monitoring services       Group Services […]

Server Time Protocol (STP) is a server-wide facility that provides capability for multiple z/OS systems to maintain TOD synchronization with each other and form a Coordinated Timing Network (CTN), that is, a collection of z/OS systems that are time synchronized to a time value.   The External Time Reference (ETR) […]