Availability Guide for Change Management

Making Application Subsystem Changes Online

Availability Guide for Change Management–125506

4-5

Making Changes to NonStop TS/MP Online

You may need to change your transaction-processing environment to accommodate new

application requirements or new users or to satisfy new transaction throughput and

response time requirements. Tandem designed its transaction-processing services to

expand easily as OLTP operations evolve and business needs change.

This subsection:

•

Provides a brief overview of NonStop TS/MP

•

Describes the changes you can perform to NonStop TS/MP online

Overview of NonStop TS/MP

The NonStop TS/MP product consists of a set of processes that give enhanced

transaction-processing functions to client/server, terminal-based, and mixed-computing

environments.

NonStop TS/MP supports products and processes that run in either the Guardian

environment or the OSS environment; however, all NonStop TS/MP product processes

run as Guardian processes.

NonStop TS/MP Components

NonStop TS/MP supports server processes through monitoring, load balancing, and

providing linkage with requesters. The major components of NonStop TS/MP are:

•

PATHMON (Process manager)—The central control process for the transaction-

processing core service. The process-management tasks performed by PATHMON

include all the tasks related to the starting, monitoring, and stopping of server

processes and other processes specific to a transaction-processing environment.

•

LINKMON (Link manager)—The process that requests links to server processes

and provides link access after the link is granted. LINKMON processes support

access to server classes from client and requester programs in the NonStop

TUXEDO, and Pathway environments.

NonStop TS/MP Management Interfaces

The NonStop TS/MP product provides the following interfaces:

•

PATHCOM—A command interpreter used to communicate interactively with

PATHMON to configure and manage the NonStop TS/MP core service.

•

NonStop TS/MP management programming interface—A set of programmatic

commands that allows a management application to communicate directly with

PATHMON. You typically write management applications to automate operator

functions.

Note. For a complete overview of NonStop TS/MP, see the Introduction to NonStop

Transaction Processing.