NET/MASTER Management Services (MS) System Management Guide

Application Processes and NCL Queues

Configuring the Processing Environment

11–64 115414 NonStop NET/MASTER MS System Management Guide

Application Processes

and NCL Queues

Figure 11-6 summarizes the relationship between static and dynamic application

processes and NCL queues. The figure shows a NonStop NET/MASTER MS system

with two application processes: a persistent application process and an application

process pair. Each application process has two NCL processing environments. The

figure shows that an NCL process in any NCL processing environment in any

application process can send an NCL process to any queue.

The figure shows three NCL queues, for which the global execution limits are one,

three, and five NCL processes, respectively. It shows that the global execution limit is

applied locally for each NCL processing environment. For example, NCL Queue 1 has

four concurrently executing NCL processes even though the global execution limit is

one: each NCL process was executed from a different NCL processing environment.

The figure shows that each application process maintains separate NCL queue files.

Information about delayed or queued NCL processes executed from NCL processing

environments 1 and 2 is stored in the NCL queue file (pQnnn) maintained by the

persistent application process; information from environments 3 and 4 is stored in the

NCL queue file (pQmmm) maintained by the application process pair. (Other files

(pQnnnA and pQmmmA) are also used by the application processes to store NCL

queue information, and are shown in the figure. However, a file used only during the

recovery of a failed application process pair (which would be called pQmmmX, if

created) is not shown. (An NCL queue recovery file is not used by persistent

application processes because these processes do not run persistent NCL processes.))

See Section 3, “Configuring NonStop NET/MASTER MS,” and Section 5,

“Customizing the Operations Environment,” for more information about NCL queues.