TS/MP 2.5 System Management Manual

Tandem NonStop
Series/RISC
(TNS/R)
Tandem computers that support the Tandem NonStop Kernel and that are based on reduced
instruction-set computing (RISC) technology. TNS/R processors implement the RISC instruction set
and are upwardly compatible with the TNS system-level architecture. See also reduced
instruction-set computing (RISC) and Tandem NonStop Series (TNS).
task The sequence of SCREEN COBOL program units that are executed as a result of a PATHCOM
START TERM or RUN PROGRAM command or an SPI START TERM or START PROG command.
TCLPROG file A SCREEN COBOL object library file.
TCP See terminal control process (TCP).
TDA See terminal data area (TDA).
TEDIT A Tandem text editor used to create or modify a source text file. Also called PS Text Edit.
tell message An informational message sent by PATHCOM or a management application to one or more
terminals controlled by a SCREEN COBOL program, to be displayed for the terminal operators.
TELL object A temporary object used in PATHCOM and SPI commands to define a tell message.
temporary TERM
object
A TERM object created by the PATHMON process when a PATHCOM RUN PROGRAM command
or an SPI START PROG command is issued. Temporary TERM objects are deleted by the
PATHMON process when application processing is completed or when a STOP TERM or ABORT
TERM command is issued. Names of temporary TERM objects begin with a number. See also
configured TERM object and TERM object.
TERM object A definition of a task that uses a SCREEN COBOL program to control an input/output device
such as a terminal or workstation, or an input/output process such as a front-end process. A
TERM object can be either explicitly configured with an ADD command or created by the
PATHMON process through a PATHCOM RUN PROGRAM or SPI START PROG command. TERM
objects created by the latter method are called temporary TERM objects. See also configured
TERM object and temporary TERM object.
terminal An I/O device capable of sending and receiving information over communications lines.
terminal context Data maintained by a TCP for each active terminal under its control.
terminal control
process (TCP)
A process used for terminal management and transaction control, provided by Tandem as part
of the Pathway/TS product. A TCP is a multithreaded process that interprets compiled SCREEN
COBOL requestor programs (screen programs) in the user’s application, executing the appropriate
program instructions for each I/O device or process the TCP is configured to handle. The TCP
coordinates communication between screen programs and their I/O devices or processes and,
with the help of the PATHMON process, establishes links between screen programs and server
processes. See also requestor and SCREEN COBOL.
terminal data area
(TDA)
In SCREEN COBOL, the area that the TCP allocates for terminal context data. The MAXTERMDATA
parameter of the PATHCOM SET TCP command defines the upper limit for this data area.
thaw condition A condition in which prohibition of communication between a terminal and a server class is lifted.
See also freeze condition.
thread A task that is separately dispatched and that represents a sequential flow of control within a
process (for example, a TCP).
throughput The number of transactions a system can process in a given period, such as one second.
TMF See Transaction Management Facility (TMF) subsystem.
TMF level recovery Recovery of the database to a consistent state through the use of the TMF subsystem. When a
failure occurs, the TMF subsystem attempts the application to back out the entire transaction,
returning the contents of the database to the values it held when the transaction was started. The
application can then retry the transaction.
TNS See Tandem NonStop Series (TNS).
TNS/R See Tandem NonStop Series/RISC (TNS/R).
token An attribute control element in the CONTROLLED clause of a SCREEN COBOL program,
which allows run-time control of display attributes. This token consists of an attribute identifier
and an attribute value.
1.
2. In the Subsystem Programmatic Interface (SPI), a distinguishable unit in a message. An SPI
token consists of an identifier (token code or token map) and a token value. Programs place
344 Glossary