Availability Guide for Problem Management

Glossary
Availability Guide for Problem Management–125509
Glossary-2
command file
command file. A file that contains a series of commands. When the file is executed, the
commands within the file are automatically executed. Command files are supported by
the Tandem Advanced Command Language (TACL) and many Tandem subsystems.
communications controller. A hardware component that manages communications lines or
devices.
communications subsystem. A Tandem product that provides users with access to a set of
communications services. Some examples of communications subsystems are Expand,
Tandem TCP/IP, and Multilan.
configuration management. The process of configuring the production system hardware and
software to adapt to changes. One of the operational disciplines in the operations-
management model.
CONFTEXT file. An EDIT file containing a series of statements that define the hardware
and software components of your NonStop system. The CONFTEXT file is an input file
to the SYSGEN program.
database. A collection of tables containing data, all objects that depend on the tables, and all
catalogs in which the tables and objects are registered.
data definition language (DDL). The set of definition statements within the SQL language.
Data definition statements are used to define, delete, or modify the catalog definition of
a table, column, index, view, constraint, or partition or to change the authorization.
DDL. See data definition language.
design outage class. An outage class that includes bugs in design and design failures in
hardware and software. For example, an application change that introduces unexpected
problems could cause a design outage.
distributed database. A database whose objects reside on more than one system in a
network of systems and whose objects can be accessed from any system in the network.
Disk Space Analysis Program (DSAP). A utility program that analyzes how space on a
given disk volume is used.
Distributed Systems Management (DSM) products . A set of software tools that facilitate
management of NonStop systems and networks. These tools include the Distributed
Name Service (DNS), the Event Management Service (EMS), the Subsystem Control
Facility (SCF) for communications subsystems, the Subsystem Programmatic Interface
(SPI), and the ViewPoint console application.
Distributed Systems Management Solutions (DSMS). A Tandem application package with
two interfaces, NetStatus and NetCommand, and an underlying management service
layer, Distributed Systems Network Management (DSNM), that enables a user to
monitor and control systems and networks from a single terminal. DSMS is particularly
useful for managing subsystems and their objects.