IBM DB2 Manual page 547

"old" (for primary) and "new" (for
secondary) structures.
group buffer pool (GBP)
A coupling facility cache structure that is
used by a data sharing group to cache
data and to ensure that the data is
consistent for all members.
group buffer pool recovery pending (GRECP)
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The state that exists after the buffer pool
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| for a data sharing group is lost. When a
page set is in this state, changes that are
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| recorded in the log must be applied to the
| affected page set before the page set can
be used.
|
group level
The release level of a data sharing group,
which is established when the first
member migrates to a new release.
group name
The z/OS XCF identifier for a data
sharing group.
group restart
A restart of at least one member of a data
sharing group after the loss of either locks
or the shared communications area.
GTF See generalized trace facility.
handle
In DB2 ODBC, a variable that refers to a
data structure and associated resources.
See also statement handle, connection
handle, and environment handle.
help panel
A screen of information that presents
tutorial text to assist a user at the
workstation or terminal.
heuristic damage
The inconsistency in data between one or
more participants that results when a
heuristic decision to resolve an indoubt
LUW at one or more participants differs
from the decision that is recorded at the
coordinator.
heuristic decision
A decision that forces indoubt resolution
at a participant by means other than
automatic resynchronization between
coordinator and participant.
histogram statistics
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A way of summarizing data distribution.
|
| This technique divides up the range of
possible values in a data set into intervals,
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| such that each interval contains
approximately the same percentage of the
|
values. A set of statistics are collected for
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| each interval.
hole A row of the result table that cannot be
accessed because of a delete or an update
that has been performed on the row. See
also delete hole and update hole.
home address space
The area of storage that z/OS currently
recognizes as dispatched.
host The set of programs and resources that
are available on a given TCP/IP instance.
host expression
A Java variable or expression that is
referenced by SQL clauses in an SQLJ
application program.
host identifier
A name that is declared in the host
program.
host language
A programming language in which you
can embed SQL statements.
host program
An application program that is written in
a host language and that contains
embedded SQL statements.
host structure
In an application program, a structure
that is referenced by embedded SQL
statements.
host variable
In an application program written in a
host language, an application variable
that is referenced by embedded SQL
statements.
host variable array
An array of elements, each of which
corresponds to a value for a column. The
dimension of the array determines the
maximum number of rows for which the
array can be used.
IBM System z9 Integrated Processor (zIIP)
A specialized processor that can be used
|
for some DB2 functions.
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IDCAMS
An IBM program that is used to process
access method services commands. It can
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Glossary