TS/MP System Management Manual (H06.05+, J06.03+)

Glossary
HP NonStop TS/MP System Management Manual—541819-007
Glossary-22
request message
interprocess communication in the Guardian environment. See also requester and
server.
request message. The part of an interprocess communication message that is formatted by
a requester and sent to a specific server. The message contains any data and
instructions needed by the server to perform its processing. See also reply message.
request/response server. See context-free server.
request translation header. A group of header fields that must be included at the
beginning of each request message a SCREEN COBOL or Pathsend requester sends
to the Pathway translation server for the NonStop TUXEDO system. This header
specifies the NonStop TUXEDO application service for which the message is destined,
the NonStop TUXEDO buffer types of the request and reply messages as seen by the
service, and options that modify the invocation of the service. The translation server
removes this header from the request message before sending it to the application
service. See also reply translation header.
reserved word. A word that can be used only as a keyword.
resources. The components of a computer system that work together to process
transactions. Terminals, workstations, CPUs, memory, I/O controllers, disk drives,
processes, files, and applications are examples of resources.
response time. The amount of time it takes to receive a response from the system after
initiating a request message (for example, by pressing a function key).
retryable operation. An operation that can be interrupted and repeated an indefinite
number of times without affecting the consistency of the database; for example, all
read operations are retryable.
RISC. See reduced instruction-set computing (RISC).
root directory. An OSS directory associated with a process that the system uses for
pathname resolution when a pathname begins with a slash (/) character. See also
OSS pathname.
RSC. See Remote Server Call (RSC).
ROUT. Redirector (RD) processes that provide LINKMON-like functionality to Pathsend
requesters. ROUT is also referred to as RD process.
scalability. The ability to increase the size and processing power of an online transaction
processing system by adding processors and devices to a system, systems to a
network, and so on, and to do so easily and transparently without bringing systems
down. Scalability is also sometimes called expandability.
Note. The RD is part of the ACS subsystem.