TS/MP System Management Manual (G06.24+, H06.03+)

Glossary
NonStop TS/MP System Management Manual—541819-001
Glossary-24
special register
special register. A data item defined by the SCREEN COBOL compiler, rather than
explicitly in the program. Each special register has a particular purpose and should be
used only as defined. The SCREEN COBOL language defines a different set of special
registers from those defined by the standard COBOL language.
SPI. See Subsystem Programmatic Interface (SPI).
static server. A server process that the PATHMON process creates when a START
SERVER command is issued. The PATHMON process starts the number of static
servers defined by the NUMSTATIC attribute for the server class. See also dynamic
server.
Structured Query Language (SQL). A relational database language used to define,
manipulate, and control databases.
subsystem. In the context of the Subsystem Programmatic Interface (SPI) and the Event
Management Service (EMS), a process or collection of processes that gives users
access to a set of related resources or services. A subsystem typically controls a
cohesive set of objects. The Pathway subsystem includes PATHMON processes,
TCPs, and all other components of the PATHMON environment.
subsystem ID. In management applications, a data structure that uniquely identifies a
subsystem. The subsystem ID is specified in SPI commands to identify the target
subsystem, and in EMS event messages to identify the source of the event message.
The Pathway subsystem ID applies to all components of the PATHMON environment,
including PATHMON processes and TCPs.
Subsystem Programmatic Interface (SPI). A set of Guardian procedures, message
formats, and definition files that allows management applications to communicate
directly with subsystem processes, such as the PATHMON process, for configuration
and control of objects and for event management.
subtype 30 process. A nonprivileged process that simulates terminals and communications
devices.
subvolume. A related set of files, as defined by the user, within the Guardian environment.
The name of a subvolume is the third of the four parts of a file name.
swap file. A temporary file created by a process for temporary storage: for example, by the
Kernel Managed Swap Facility (KMSF) on behalf of a TCP for temporary storage of
terminal context.
syncdepth. A parameter to Guardian procedure calls that sets the maximum number of
operations or messages that a process is allowed to queue before action must be
taken or a reply must be performed.
sync ID. A value used in the Guardian environment to determine whether an I/O operation
has finished. In active backup programming, a file’s sync ID is used to prevent the