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Status Future consideration
Workspace z/OS
Categories DFSMS DFSORT
Created by Guest
Created on Jan 22, 2025

RELATED IDEAS

New command to inverse a file

We would like to have a DFSORT utility to easily invert a file, so the records to become columns and the opposite (like matrix inversion).

Input example:

ABC
123

output:

A1

B2

C3

Kind regards

Konstantinos

Idea priority High
  • Guest
    Reply
    |     Feb 12, 2025

    Thank you for your answer,

    There are cases that we can use the utility even with the limitation of 32K. For example a file with 30K records with LRECL=1000 can be inverted to file with 1000 records and LRECL=30K.

  • Guest
    Reply
    |     Jan 28, 2025
    Thank you for submitting the request for enhancement. To ensure we have a complete understanding of your requirements before committing to the request, we would like you to provide additional details. While the simple examples you shared are helpful, could you please elaborate further on your exact requirements?
    Ideally, please include:
    ? Real-time examples.
    ? A sample input file and the desired output file.
    ? DCB properties (e.g., LRECL, RECFM).
    Providing these details will help us gain deeper insight into your requirements and proceed accordingly.

    Additionally, z/OS is governed by LRECL, and record length has the following limitations:
    ? Variable-length records: limited to 32,756 bytes
    ? VSAM variable-length records: limited to 32,752 bytes
    ? Fixed-length records: limited to 32,760 bytes
    ? Variable block-spanned records: limited to 32,767 bytes
    Based on these limitations, we have the following questions for you:
    1 How many records does your input file consist of? If the number of records exceeds 327,768, how should inversion be handled?
    2 If the input file is of variable length, how should short records be inverted?
    Providing clarity on these points will help us better understand and address your requirements.

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