Air Cleaner User Manual

point of recovery. In MQSeries for OS/390, the term
used to describe a set of backup copies of MQSeries for
OS/390 page sets and the corresponding log data sets
required to recover these page sets. These backup
copies provide a potential restart point in the event of
page set loss (for example, page set I/O error).
preemptive shutdown. In MQSeries, a shutdown of a
queue manager that does not wait for connected
applications to disconnect, nor for current MQI calls to
complete. Contrast with immediate shutdown and
quiesced shutdown.
principal. In MQSeries on UNIX systems, MQSeries
for OS/2 Warp, and MQSeries for Windows NT, a term
used for a user identifier. Used by the object authority
manager for checking authorizations to system
resources.
privately-defined object. In OS/390, an object whose
definition is stored on page set zero. The definition can
be accessed only by the queue manager that defined it.
Also known as a locally-defined object.
process definition object. An MQSeries object that
contains the definition of an MQSeries application. For
example, a queue manager uses the definition when it
works with trigger messages.
programmable command format (PCF). A type of
MQSeries message used by:
v User administration applications, to put PCF
commands onto the system command input queue of
a specified queue manager
v User administration applications, to get the results of
a PCF command from a specified queue manager
v A queue manager, as a notification that an event has
occurred
Contrast with MQSC.
program temporary fix (PTF). A solution or by-pass of
a problem diagnosed by IBM field engineering as the
result of a defect in a current, unaltered release of a
program.
PTF. Program temporary fix.
Q
queue. An MQSeries object. Message queuing
applications can put messages on, and get messages
from, a queue. A queue is owned and maintained by a
queue manager. Local queues can contain a list of
messages waiting to be processed. Queues of other
types cannot contain messages—they point to other
queues, or can be used as models for dynamic queues.
queue manager. A system program that provides
queuing services to applications. It provides an
application programming interface so that programs
can access messages on the queues that the queue
manager owns. See also local queue manager and remote
queue manager. An MQSeries object that defines the
attributes of a particular queue manager.
queue manager event. An event that indicates:
v An error condition has occurred in relation to the
resources used by a queue manager. For example, a
queue is unavailable.
v A significant change has occurred in the queue
manager. For example, a queue manager has stopped
or started.
queue-sharing group. In MQSeries for OS/390, a
group of queue managers in the same sysplex that can
access a single set of object definitions stored in the
shared repository, and a single set of shared queues
stored in the coupling facility. See also shared queue.
queuing. See message queuing.
quiesced shutdown. In MQSeries, a shutdown of a
queue manager that allows all connected applications
to disconnect. Contrast with immediate shutdown and
preemptive shutdown. A type of shutdown of the CICS
adapter where the adapter disconnects from MQSeries,
but only after all the currently active tasks have been
completed. Contrast with forced shutdown.
quiescing. In MQSeries, the state of a queue manager
prior to it being stopped. In this state, programs are
allowed to finish processing, but no new programs are
allowed to start.
R
RBA. Relative byte address.
reason code. A return code that describes the reason
for the failure or partial success of an MQI call.
receiver channel. In message queuing, a channel that
responds to a sender channel, takes messages from a
communication link, and puts them on a local queue.
recovery log. In MQSeries for OS/390, data sets
containing information needed to recover messages,
queues, and the MQSeries subsystem. MQSeries for
OS/390 writes each record to a data set called the active
log. When the active log is full, its contents are
off-loaded to a DASD or tape data set called the archive
log. Synonymous with log.
recovery termination manager (RTM). A program that
handles all normal and abnormal termination of tasks
by passing control to a recovery routine associated with
the terminating function.
Registry. In Windows NT, a secure database that
provides a single source for system and application
configuration data.
Glossary
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MQSeries MQSC Command Reference
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