Availability Guide for Problem Management

Availability Guide for Problem Management–125509
Glossary-1
Glossary
This glossary includes a selection of terms used in this manual. Definitions of
application and communications subsystem terms are brief and not very detailed; they
are intended only to make this manual more meaningful than it would otherwise be to
readers unfamiliar with Tandem’s application and communications subsystems.
application subsystem. A Tandem product that provides users with application services.
Pathway, NonStop SQL/MP, and NonStop Transaction Manager/MP (TM/MP) are
application subsystems.
audit dump. A before-image, after-image, or control information for a transaction. Audit
records are stored in audit trail files.
audit trail. A series of audit trail files containing audit records for transactions that make
changes to audited disk files.
audit trail file. A disk file containing audit records for transactions that make changes to
audited disk files.
audited file. A disk file that is flagged for auditing by the TMF subsystem.
audited table. A table that is flagged for auditing by the TMF subsystem.
audited volume. A disk volume on which audited disk files can reside.
availability. Tandem is using this term to describe end-user availability. End-user availability
is the amount of time an application running on a Tandem system can be used effectively
by the user of that application.
BACKUP. A utility program that copies disk files onto magnetic tape.
catalog. A set of tables containing the descriptions of SQL objects such as tables, columns,
indexes, views, files, and partitions.
change management. The process of managing the maintenance and growth of your
NonStop system. Change management involves managing all hardware, software, and
procedural changes and includes all of the tasks required to properly manage change
within the operations environment. One of the operational disciplines in the operations-
management model.
client/server computing environment. An environment in which programs are divided
between a client program, which resides on a personal computer (PC), Macintosh, or
workstation, and server programs, which reside on a host system such as a Tandem
NonStop system. Users typically request information from server programs through an
easy-to-use graphical user interface (GUI) provided by the client program. The
client/server architecture is usually linked together by a local area network (LAN).