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Introduction to JES2 - IBM
What is the relationship between JES and the system users? Is there really any difference between JES2 and JES3? What are some of JES2's key functions? An initial consideration when installing MVS is whether to select the JES2 or the JES3 component.

Job Entry Subsystem 2/3 - Wikipedia
In modern times, there are two distinct implementations of the Job Entry System called JES2 and JES3. They are designed to provide efficient execution of batch jobs.

What is a JES? - IBM
JES2 is a functional extension of the HASP II program that receives jobs into the system and processes all output data produced by the job. JES2 is the component of MVS that provides the necessary functions to get jobs into, and output out of, the MVS system.

JES2 commands - IBM
JES2 processes its initialization statements and commands in a way that allows most initialization statements to be changed by operator command. The following is a partial list of the control that JES2 commands have over JES2 processing.

JES2 (Job Entry Subsystem 2) - Mainframes.com
JES2 accepts the submission of work for the BCP and exercises independent control over its job processing. IBM ® provides two kinds of job entry subsystems: JES2 and JES3. In many cases, JES2 and JES3 perform similar functions, but most installations use JES2.

z/OS V2R1.0 JES2 Introduction - IBM
An overview of JES2 functions, device control, network job entry (NJE), remote job entry (RJE), initialization, operations, customization techniques, and diagnostic tools.

OS/VS2 MVS JES2 Quick Reference - Jay Moseley
JES2 is to allow logging (on the system log) of any initialization parameter statements which follow a LOG statement. JES2 is not to honor the LOG initialization parameter statement. All default (underlined) options are taken. Before stopping the system, you should stop all JES2 processing by entering the $P command.

Diff. between JES2 and JES3 - IBM Mainframe Community
The difference between the JES2 and JES3 is as below JES2 processing is considered to be independently controlled. Each JES2 image processes its own job input, job scheduling and job output. JES2 uses a contention-based paradigm for managing a multi-image workload. Each image ?wakes up? periodically and attempts to serialize

JES2 - Basics 3.1 - Interskill Learning
This course describes how and why JES2 evolved and introduces the major JES2 components, their purpose, and general terminology.

JES2 compared to JES3 - IBM
In many cases, JES2 and JES3 perform similar functions, but most installations use JES2. Both JES2 and JES3 read jobs into the system, convert them to internal machine-readable form, select them for processing, process their output, and purge them from the system.

 

 

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