TMF Glossary (G06.24+)

TMF Glossary
HP NonStop TMF Glossary—522415-002
Glossary-14
$RECEIVE
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$RECEIVE. The file through which a process receives and replies to messages from other
processes.
recoverable resource manager. A resource manager that represents data that can be
recovered after a failure. This type of resource manager must be registered with TMF
in the resource manager directory before it can be opened by a gateway process.
recovery. The returning of a database file or files to a consistent state.
recovery mode. See online recovery mode and archive recovery mode.
redo-needed file. An audited file that contains changes that must be reapplied because
they were written to cache but not yet transmitted to disk. Such files cannot be opened.
To recover them, you must use the file recovery process.
Remote Database Facility (NonStop RDF). A software product that enables disaster
tolerance for OLTP production databases, monitors database updates audited by TMF
on a source system, and applies those updates to a copy of the database on a target
system.
remote. Outside the local environment. For TMF, a transaction, transaction branch, or
transaction manager outside the home node. For example, if a distributed transaction
originates on node A and also does work on node B, the TMF system on node A is the
local transaction manager and the TMF system on node B is the remote transaction
manager.
remote node. A system, other than the home node, accessed by a distributed transaction.
requester. A process or program that runs in the NonStop Kernel operating system
environment on a NonStop system and requests services from a server process. For
example, a SCREEN COBOL program is a requester program, and the Pathway
terminal control process (TCP) is the requester process that interprets such a
requester program. Alternatively, a requester program can make requests through
procedure calls to the Pathsend facility or through the NonStop Kernel WRITEREAD
procedure. A requester is a specific type of client. See also client and server.
resource manager. A representation of anything that contains data, such as a database or
a queue.
TMF uses a resource manager facility that is a collection of routines that enables
cooperation between different transaction management systems running on different
platforms in support of heterogeneous transaction processing. See also recoverable
resource manager and volatile resource manager.
resource manager file. A file associated with each resource manager, used to manage and
control various elements.