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

Glossary
NonStop TS/MP System Management Manual—541819-001
Glossary-27
throughput
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 allows 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. (1) 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. (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 tokens in an SPI buffer by
calling the SSPUT procedure and retrieve them from the buffer by using the SSGET
procedure.
transaction. An operation or a series of operations that retrieves and updates information to
reflect an exchange of goods or services. In the process of retrieving and updating
information, a transaction transforms a database from one consistent state to another.
The TMF subsystem treats a transaction as a single unit; either all of the changes
made by a transaction are made permanent (the transaction is committed) or none of
the changes are made permanent (the transaction is aborted).
Transaction Application Language (TAL). A systems programming language with many
features specific to stack-oriented Tandem NonStop systems. See also pTAL.
transaction backout. A TMF subsystem activity in which the effects of a partially completed
transaction are canceled.
Transaction Delivery Process (TDP). A multithreaded gateway process, part of the
Remote Server Call (RSC) product, that runs on a Tandem NonStop system. The TDP
can be replicated and can manage many connections and workstations at one time, as
well as multiple sessions from each workstation.
transaction identifier. A unique name that the TMF subsystem assigns to a transaction.
transaction log. See audit trail.
transaction management. The ability to coordinate transaction control functions, such as
beginning and ending transactions, committing or aborting transactions, and recovering
transactions.