TMF Glossary (H06.03+)

TMF Glossary

HP NonStop TMF Glossary—540135-001

Glossary-17

Tandem Advanced Command Language (TACL)

Tandem Advanced Command Language (TACL). The command language that provides

the NonStop operating system’s interactive user interface. TACL features built-in

functions that can be used for constructing programmatic routines and macros. Some

of these functions call operating system procedures that perform TMF operations.

TMF. The Transaction Management Facility, a product that provides transaction protection

and database consistency in demanding online transaction processing (OLTP) and

decision-support environments. It gives full protection to transactions that access

distributed SQL and Enscribe databases, as well as recovery capabilities for

transactions, online disk volumes, and entire databases. To furnish this service, TMF

manages database transactions, keeps track of database activity through audit trails,

and provides database recovery methods.

TMF catalog. The database that specifies where all dumped files reside and which dump

media are available for reuse.

TMF incarnation. Each new creation of a TMF configuration begins with a DELETE TMF

command and is referred to as an incarnation; any previous configuration is erased.

TMF uses unique identifiers to distinguish between information and resources

associated with particular TMF incarnations.

TMF operation. A TMF function, such as TMF Start, TMF Stop, or file recovery. TMF

recognizes each specific instance of an operation as unique and assigns a unique

operation serial number to distinguish this operation from other recent operations of the

same type.

TMF scratch tapes. A tape volume that is available for writing dumps, defined as such in

the TMF catalog.

TMF subvolume. The subvolume where TMF configuration files and the TMF catalog

reside. The default is $SYSTEM.ZTMFCONF.

TMFCOM. The TMF interactive command interface, which allows operators to enter

commands and receive responses through a terminal keyboard and monitor.

TMFLIB. A set of subroutines in the server library that exists in each processor in the

NonStop server and controls transactions within the server. The set includes

application interface procedures such as BEGINTRANSACTION and

ENDTRANSACTION; it also contains procedures called by privileged processes.

TMP. See transaction management process (TMP).

TMP memory threshold. The percentage of extended segment memory allocated to the

TMP that can be used before TMF disables new transactions.