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File No. 5360-36
Order No. GY28-6660-9
Program Logic
IBM System/360 Operating System:
MVT Job Management,
Program Logic Manual,
Program Number 3605-1::1-535
OS Release 21
This publication describes the internal logic of
the job management routines for the MVT control
program of the IBM System/360 operating System.
Included are discussions of input stream
processing, work queue management, job
initiation and termination, I/O device
allocation, system output processing, and the
scheduling and execution of operator commands.
This manual is intended for persons involved
in program maintenance, or system programmers
who are altering the program design. . Program
logic information is not necessary for the use
and operation of the program.
Ten th Edi tion (March, 1972 )
This is a major reyision of, and obsoletes; GY28-6660-8. The
publication has been modified to reflect the changes
described in the "Summary of Amendments." Changes or
additions to the text and illustrations are indicated by a
vertical line to the left of the change.
This edition applies to release 21 of IBM System/360
Operating System, and to all subsequent releases until .
otherwise indicated in new editions or Technical Newsletters.
Changes are continually made to the information herein;
before using this publication in connection with the
operation of IBM systems, consult the latest IBM System/360
and System/370 SRL Newsletter, GN20-0360, for the editions
that are applicable and current.
Requests for copies of IBM publications should be made to
your IBM representative or to the IBM branch office serving
your locality.
A form for readers' comments is provided at the back of
this publication. If the form has been removed, comments may
be addressed to IBM Corporation, Programming Systems
Publications, Department D58, PO Box 390, Poughkeepsie, N. Y.
12602. Comments become the property of IBM.
@Copyright International Business Machines Corporation 1967,1968,1969,1970,1971,1972
Preface
This book describes the internal logic of and tables used by job management, brief
the IBM systern/360 Operating system job descriptions of job management modules,
management routines for the MVT control module cross references, flowcharts, and an
program. It includes discussions of input abbreviation dictionary.
stream processing, work queue management,
job initiation and termination, I/O device Users of this book should have a thorough
allocation, system output processing, and knowledge of IBM Systern/360 programming.
the scheduling and execution of operator The following publications provide basic
commands. background information:
The book is intended for persons IBM Systern/360 Operating System:
involved in program maintenance, or for
system programmers responsible for altering Job Control Language Reference Manual,
the program design. GC28-6704
The introduction to this book describes supervisor services, GC28-6646
job management in terms of the system tasks
performed. Parts 1-6 describe the A more complete list of books providing
functions performed and the flow of control reference and background information is
among the routines. The appendixes contain contained in the Bibliography, which
format descriptions of the major work areas precedes the Index to this publication.
Preface 3
4 08/360 MVT Job Management (Release 211
Contents
SUMMARY OF AMENDMENTS FOR GY28-6660-9 Checking DD * and DD DATA
-- OS RELEASE 21