If you are a Systems Programmer working in a z/OS JES2 environment, it is vitally important that you have a thorough understanding of IBM's Job Entry Subsystem 2 (JES2).<br>This course describes and explains what functions there are in JES2, and teaches how to set up a JES2 system in order to fully exploit the features and capabilities of the product.<br><br>This course is also available for one-company, on-site presentations and for live presentation over the Internet, via the Virtual Classroom Environment service.
Read more +


A sound knowledge of z/OS concepts, JCL and utilities.
Read more +

Delegates will learn how to

  • describe how JES2 works within MVS
  • control the start and stop processes of JES2
  • describe the JES2 functions and facilities
  • set up and install an efficient JES2 system
  • dynamically change JES2 parameters
  • customise JES2 to your specific requirements
  • set up and manage the RJE and NJE environments.
Read more +


z/OS and JES2 - How They Relate

IPL of the operating system; starting and initiating JES2; starting other functions; stopping JES2 and z/OS.

Starting & Stopping z/OS JES2

Starting and initiating JES2; Starting JES2; JES2 start parameters; Default JES2 start parameters; JES2 Initialisation parameters (JES2PARM); Activating JES2; JES2 cold start; JES2 warm starts; Example of JES2 warm start; Starting other functions; Stopping JES2; Stopping JES2 - 'crash landing'; Accidental crash landing of JES2; Message $HASP095; JES2 termination codes.

z/OS Workload & the Active System

Program execution environments; Batch processing; Started Tasks; Time Sharing Option (TSO); Executing program requirements; Program identification With JCL; All the JCL statements; The most used JCL statements; JES2 and JES3 statements; Relationships between JCL statements; Getting work into the system; Getting a started task into the system; Getting a TSO user into the system; Getting a Batch Job into the system; Batch Job Queues; Job initiation; Step initiation; The job schedule; Reports and listings; Standard reports; Job Log examples; The active system; What is a batch job?; JES2 information in the job stream; A Job's phases; What is a System Task?; What is a TSO logon?.

JES2 Processors & Subsystem Interface

JES2 Job Processing; Input Processor; Converter Processor; Execution Processor; Output Processor; Why the Subsystems Interface (SSI)?; Subsystem Interface; Using SSI; Using the Subsystem Interface; Requesting SS service; Defining subsystems; Control block definitions; What the function IDs represent.

JES2 Installation - Part 1

JES2 installation components; JES2 load modules; JES2 libraries; IBM-supplied basic JCL procedure; Subsystem definition; PROCLIB & INCLUDE; JES2 datasets; Allocating Spool and Checkpoint; Program Properties Table (PPT); Secondary subsystems; Defining Secondary Subsystems.

JES2 Installation - Part 2

JES2 initialization flow; Types of JES2 start; Specifying type of JES2 startup; JES2 start options; Initialization parameter format; JES2PARM; Console statements; Key initialization statements; SPOOLDEF; CKPTDEF; MASDEF; MAS display commands; INITDEF and INITnnn; JOB/STC/TSUCLASS; ESTLNCT; CONDEF; PCEDEF; JES2 Monitor.

Input & Conversion Processors

Processes and Queues; Input processing; Job Queue; Job Queue Element (JQE); Job Control Table (JCT); Input Output Table (IOT); Peripheral Data Set Definition Block (PDDB); Input Processing Control Blocks overview; Controlling input processing; Internal readers; Job characteristics; Conversion process.

Checkpoint & Spool Processing

Checkpointing; Checkpoint layout; Duplex Mode; Dual Mode; Checkpoint recovery; Checkpoint changes; JES2 Spool Management; Spool Volumes (SPOOLDEF); SPOOL fencing; Spool Affinity; Spool Track Groups; Allocating Spool; Spool status; Changing the spool configuration; Spool partitioning; Spool Offload facility; Offload Transmitters/Receivers; Controlling OFFLOAD devices; Controlling Transmitters/Receivers; Offload data set; Specifying the JOB Transmitter/Receiver; Specifying the SYSOUT receiver; Specifying the SYSOUT transmitter; Review tasks.

JES2 Exits

What are JES2 Exits?; Uses for JES2 Exits; IBM-supplied JES2 Exits Points; Defining and controlling Exits; JES2 EXIT initialization; Calling environment; Linkage and Return Codes; Exit coding and macros.

Execution Processor

Executing batch jobs - Initiators; Initiator management; Execution Processor; Executing in z/OS - the address space; Execution - the initiators; Batch Initiators; JES2 and Initiators; Controlling initiators; Jobs in z/OS; Active jobs; DISPLAY active jobs; Cancelling jobs; The $C command; ZAPJOB

Output & Purge Processor

Output processing; Print/Punch processor; Output services; Output group; Demand set-up; Work selection criteria; Controlling output; Define local printers; Define printer globals; Output listings


Remote Job Entry (RJE); Network Job Entry; NJE routing; SNA example; Who is in the Network?; Path resistance; Resistance computation.

Read more +

Why choose QA

Dates & Locations

Need to know

Frequently asked questions

How can I create an account on myQA.com?

There are a number of ways to create an account. If you are a self-funder, simply select the "Create account" option on the login page.

If you have been booked onto a course by your company, you will receive a confirmation email. From this email, select "Sign into myQA" and you will be taken to the "Create account" page. Complete all of the details and select "Create account".

If you have the booking number you can also go here and select the "I have a booking number" option. Enter the booking reference and your surname. If the details match, you will be taken to the "Create account" page from where you can enter your details and confirm your account.

Find more answers to frequently asked questions in our FAQs: Bookings & Cancellations page.

How do QA’s virtual classroom courses work?

Our virtual classroom courses allow you to access award-winning classroom training, without leaving your home or office. Our learning professionals are specially trained on how to interact with remote attendees and our remote labs ensure all participants can take part in hands-on exercises wherever they are.

We use the WebEx video conferencing platform by Cisco. Before you book, check that you meet the WebEx system requirements and run a test meeting (more details in the link below) to ensure the software is compatible with your firewall settings. If it doesn’t work, try adjusting your settings or contact your IT department about permitting the website.

How do QA’s online courses work?

QA online courses, also commonly known as distance learning courses or elearning courses, take the form of interactive software designed for individual learning, but you will also have access to full support from our subject-matter experts for the duration of your course. When you book a QA online learning course you will receive immediate access to it through our e-learning platform and you can start to learn straight away, from any compatible device. Access to the online learning platform is valid for one year from the booking date.

All courses are built around case studies and presented in an engaging format, which includes storytelling elements, video, audio and humour. Every case study is supported by sample documents and a collection of Knowledge Nuggets that provide more in-depth detail on the wider processes.

When will I receive my joining instructions?

Joining instructions for QA courses are sent two weeks prior to the course start date, or immediately if the booking is confirmed within this timeframe. For course bookings made via QA but delivered by a third-party supplier, joining instructions are sent to attendees prior to the training course, but timescales vary depending on each supplier’s terms. Read more FAQs.

When will I receive my certificate?

Certificates of Achievement are issued at the end the course, either as a hard copy or via email. Read more here.

Let's talk

By submitting this form, you agree to QA processing your data in accordance with our Privacy Policy and Terms & Conditions. You can unsubscribe at any time by clicking the link in our emails or contacting us directly.