Availability Guide for Problem Management

Glossary
Availability Guide for Problem Management–125509
Glossary-7
physical outage class
physical outage class. An outage class that includes physical faults or failure in the
hardware. Any type of hardware component failure belongs in this category.
planned outage. Time during which the system is not capable of doing useful work because
of a planned interruption. A planned outage can be time when the system is brought
down to allow for servicing, upgrades, backup, or general maintenance.
process. A unique execution of a program.
process pair. Two processes running the same program: a primary process that is active, and
a secondary, backup process (in another processor) that is ready to take over if the
primary process fails.
problem management. Activities that provide support for resolving problems in a
production environment. One of the operations disciplines in the operations-
management model.
production management. The set of regularly scheduled activities that keeps the
applications on a system or network of systems running smoothly. These activities
include administering storage media such as disks and tapes, managing space in
processors and disks, and starting or stopping system components. One of the
operations disciplines in the operations-management model.
reconfiguration. See reconfiguration outage class.
reconfiguration outage class. An outage class that includes all planned outages. Examples
include downtime required for planned maintenance (such as software upgrades) and
configuration changes (such as adding a new disk or restructuring a database).
relational database. A database in which data is represented as relational tables.
requester-server approach. An approach to application design that divides the tasks of data
input, data manipulation, and data output between two basic processes: requesters and
servers.
requesters. The programs that coordinate the data input function for an online transaction
processing application (by displaying, checking, and accepting data), send input to
server programs, and process reply messages from servers.
SCF. See Subsystem Control Facility (SCF).
SCP. See Subsystem Control Point (SCP).
security management. Activities that provide support for establishing and maintaining
system security. One of the operations disciplines in the operations-management model.
server class. A grouping of duplicate copies of a single server program, all of which execute
the same object program.