FastSort Manual

Using FastSort Commands
FastSort Manual—429834-003
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RUN Command
FastSort determines which records have duplicate keys according to that collating
sequence.
DEFINE define-name
is an optional 12-word array that specifies the name of a SORT DEFINE to use for
the sort or merge run. For more information, see Section 7, Using SORT and
SUBSORT DEFINEs.
SEGMENT size
specifies the size in pages of an extended memory segment for FastSort to use.
The number of pages must be at least 256 and cannot exceed 90 percent of the
processor’s physical memory not locked down by the operating system. If VLM is
on, 62,255 pages (127.5 MB) is the maximum segment size. If VLM is off, the
maximum is 32,767 pages. For more information, see Using VLM on page 9-10
about the VLM option.
The default for segment size is AUTOMATIC, which is in effect if you do not specify
the SEGMENT, MINSPACE, or MINTIME parameter.
If you specify AUTOMATIC, do not specify MINTIME, MINSPACE, or SEGMENT in
the same RUN command. If you specify one of these parameters with
AUTOMATIC, FastSort ignores the parameter and returns a warning message.
If you specify MINSPACE for a distributor-collector process for parallel sorting, all
of the subsort processes use MINSPACE, unless you override it with the
SEGMENT parameter of the SUBSORT command or a SORT DEFINE.
PROGRAM file
names a program file to run instead of the default. If you specify the PROGRAM
parameter more than once in a RUN command, FastSort uses the last value for
file that you specify.
SWAP file
specifies the volume, subvolume, and name of the swap file for the extended
memory segment. The swap file must be on the local node.
If the file already exists, it must be unstructured. If you omit this parameter,
FastSort creates a swap file on the scratch volume if the scratch file is local. For
remote scratch files, the default swap file location is the volume where the program
file is running.
NOSCRATCHON (scratch-vol [, scratch-vol]...)
specifies volumes that FastSort should not use for overflow scratch files. If the
initial scratch volume becomes full, FastSort uses a volume not specified in the
NOSCRATCHON attribute, protected by the Safeguard product, $SYSTEM, or a
TMF audit trail disk for overflow scratch files. You can specify up to 32
NOSCRATCHON volumes. Note that this attribute requires up to 276 additional