Browse Prior Art Database

Logical Data Set Naming

IP.com Disclosure Number: IPCOM000104887D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 4 page(s) / 89K

Publishing Venue

IBM

Related People

Benson, SM: AUTHOR

Abstract

Disclosed is a method to solve the problem of non-unique system data set (file) names by introducing the concept of a logical data set name. Data set names that are fixed by the system can be mapped in a table to real data sets with unique names.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Logical Data Set Naming

      Disclosed is a method to solve the problem of non-unique system
data set (file) names by introducing the concept of a logical data
set name.  Data set names that are fixed by the system can be mapped
in a table to real data sets with unique names.

      Today, the names of many central system data sets (files) are
fixed and are hard coded in many programs and job control statements,
and are difficul to change and costly to manage.  Not having unique
names for these system data sets (files) for each system in a complex
of systems means that they cannot be cataloged in a shared catalog
and they cannot be managed by present storage management tools.
There have been some attempts to solve the problem which have fallen
short.

      A data set name mapping can be created through the use of
panels that will allow the entry of both logical and corresponding
physical data set names on a per system basis.  An example of such a
panel is contained in Figure 1.

      Another way to enter the mapping data is by logical data set
(file) name.  In this case, Figure 2 shows a sample panel in which
the data is entered by logical data set name.  This is useful to find
all occurrences of SYS1.PARMLIB in the system complex (sysplex) and
verify that the data set sharing is set up properly.

      Data can be entered, viewed, changed, or deleted from either of
the panels.

      The logical data set name exists in a table that is separate
from the catalog and contains the logical-to-physical mapping.  The
physical data set names exis...