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SORT-MERGE/XL General User's Guide (32650-90883)

ManualsBrandsHP ManualsSoftwareMPE/iX 7.5 Operating System
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16 Chapter1
Introduction To SORT-MERGE/XL
Large File Support
>OUTPUT filename
Specifies invoking the MERGE/XL >OUTPUT command and identifies the name of the file
where the merged data is to be stored. The file identified can be either a new or an existing
file.
>KEY 1, 10
Specifies invoking the >KEY command and identifies the location of the data you want
merged. For example, 1 identifies the location of the data (the first character position of
each line in the file) and 10 identifies the length of the data (in characters). The data in all
files you want merged must be aligned in identical formats.
>END
Specifies invoking the >END command. The >END command indicates to the subsystem that
all commands have been entered and the merge operation specified should be performed.
After the merge operation is completed the data is stored in the specified file, the
subsystem is exited, and you are returned to the MPE XL colon prompt (:).
The merged data is accessed through the text processing system you used to create the
files containing data to be sorted and merged. The EDIT/V text editing subsystem is
supplied with the 900 Series HP 3000. Check with your System Manager to determine
what editors are available on your system.
There are other commands you can use to merge data. Refer to Chapter 6 for additional
information on commands.
Large File Support
The SORT/XL subsystem has been modified to support Large File functionality available
in release 6.5. SORT/XL can handle multiple input files and the sum of the input file sizes
cannot be larger than about 107GB. SORT/XL normally allocates two scratch files each of
which is about one hundred twenty percent larger than the sumn of the input files and
those files must be smaller than the maximum object size of 128GB.
The maximum native mode data type record length handled by SORT/XL has been raised
to about 32,000 bytes from the current limit of 4096 bytes. The actual maximum record
length depends on the number and length of the keys.