BMC Software subsystems and BCF

A major advantage of using subsystem architecture is that it reduces virtual storage requirements in user address spaces. BCF uses two BMC Software subsystems—the BMC Primary Subsystem (BMCP) and the BMC Consolidated Subsystem (BCSS):

• The BMCP establishes supervisory services for the BCSS and allows interception of open, close, attach, link, and load requests in the system. (AR/CTL enhanced processing is used for cancel intercept and abend filter processing for BCF.)
• The BCSS manages I/O to the REGISET and manages APF-authorized functions. Three AR/CTL components are available with the BCSS: the IMS component, the non IMS component, and the VSAM component. The IMS component must be enabled for BCF to operate. (The other components are for AR/CTL functions.) You can use the AR/CTL Status Check utility (program AESUVBCS) to ensure that required AR/CTL products, components, and functions are available for application program execution.

For more information about the BMC Software subsystems, see Administering.