Pathway/iTS TCP and Terminal Programming Guide

Introduction to TCP and Terminal Application
Programming
Compaq NonStop™ Pathway/iTS TCP and Terminal Programming Guide—426751-001
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Manageability
The Compaq NonStop™ Remote Server Call/MP (RSC/MP) product facilitates
client/server computing, allowing workstation applications to access Pathway
servers. A number of packaged tools and utilities are commercially available for use
with RSC/MP.
•
The Pathway environment helps you standardize program code. You can repeat and
reuse code; you do not have to write the same requester and server programs over
and over again. This ability to reuse code saves development time.
•
The Pathway environment allows you to isolate and test your requester and server
programs before adding them to a running application. This capability is important
because coding errors are difficult, time-consuming, and expensive to find after an
application is put into production.
•
OLTP products that are compatible with the Pathway environment are available
from many third-party vendors.
In addition to making initial development faster and easier, the structured Pathway
environment allows you to implement enhancements and develop new applications by
simply adding new requesters, sharing existing servers, or adding new servers to the
existing application. You can use code modules in the existing application as templates
for new modules in the modified or new application.
Manageability
Online transaction processing operations present a dynamic environment in which
hundreds of different transactions—from disparate locations and many different I/O
devices—can be entered concurrently and processed within seconds. To process
hundreds of transactions, thousands to millions more application program instructions
must be executed. It is critical that you be able to control and monitor such a complex
processing environment.
To control and monitor your Pathway environment—as well as simplify the task of
system management—NonStop™ TS/MP provides the following:
•
A PATHMON process, which provides a single point of control over your OLTP
applications and operations
•
A choice of two different system management interfaces: the interactive
PATHCOM interface and the Subsystem Programmatic Interface (SPI)
•
Status and error reporting capabilities, provided through a log file and through the
Event Management Service (EMS)
Because NonStop™ TS/MP provides these processes and capabilities, you do not have
to spend the time and money to develop, test, and implement comparable mechanisms.
For more information about the PATHMON process, the management interfaces, and
status and error reporting capabilities in the Pathway environment, refer to the
NonStop™ TS/MP System Management Manual, the Compaq NonStop™ Pathway/iTS
System Management Manual, the NonStop™ TS/MP Management Programming
Manual, and the Compaq NonStop™ Pathway/iTS Management Programming Manual.