Pathway/iTS System Management Manual (G06.24+)

Introduction to Pathway/iTS System Management
HP NonStop Pathway/iTS System Management Manual—426748-002
1-11
PATHCOM Processes
The PATHMON process enforces the limits you set for the environment and monitors
the operation of the objects under its control by:
•
Keeping a record of the object definitions in the PATHMON configuration file
•
Starting TCPs, TERM objects, PROGRAM objects, and SERVER processes
•
Facilitating access between TCPs or LINKMON processes and server processes
to support requester/server communication
•
Reporting status information and system errors about PATHMON-controlled
objects
•
Shutting down all or part of a PATHMON environment by stopping individual
objects
•
Automatically restarting failed objects
PATHCOM Processes
You can use PATHCOM at a command terminal to communicate interactively with the
PATHMON process. Other users use PATHCOM at application terminals to start and
run Pathway applications. Multiple PATHCOM processes can communicate with a
single PATHMON process concurrently, each supporting a particular user.
SERVER Objects
The SERVER object represents a server class, which is a group of server processes
that perform a specific type of application work (for example, adding customer names
and addresses, calculating invoice totals, or checking inventory). The PATHMON
process controls two types of server classes: Guardian server classes residing in the
Guardian environment and OSS server classes residing in the OSS environment.
The PWY2TUX translation server for the HP NonStop TUXEDO system is a special-
purpose OSS server that enables SCREEN COBOL requesters to access NonStop
TUXEDO application services. For more information about this translation server, see
the NonStop TUXEDO System Pathway Translation Servers Manual.
LINKMON Processes
A LINKMON process is a multitasking process that handles the interface to Pathway
servers from requesters other than SCREEN COBOL requesters. Such requesters
include Pathsend requesters; workstation clients that use RSC/MP; and NonStop
TUXEDO clients.
Pathsend requesters (also called Pathsend processes) are requesters written in
languages other than SCREEN COBOL that use the Pathsend procedure calls to
access Pathway server classes. RSC/MP workstation clients communicate with
Pathway servers indirectly by means of Pathsend requesters created by RSC/MP on
behalf of the clients.