This course, and its associated Part 1, together form the heart of the z/OS training curriculum for Systems Programmers.<br>In this second course, attendees learn the functions of the major z/OS components in considerable detail, and learn how the interaction of job, task, storage and data management provides service to the end user. This is done by following the sequence of events as a unit of work passes through the z/OS system from initial submission to completion.<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


Attendance on the course z/OS System Anatomy - Part 1, or equivalent experience.
Read more

Delegates will learn how to

  • describe the functions of MVS and JES2
  • use GRS effectively
  • exploit program management
  • explain how the dispatcher works
  • describe Cross Memory Services (XMS) and how it works
  • install user SVCs
  • describe how MVS invokes recovery and when to use ESTAE routines
  • explain how WLM works to manage z/OS resources
  • design and setup the DASD subsystem
  • isolate I/O problems.
Read more


Job Management

Job processing; SSI; input phase; internal readers; initiators; SWA control blocks; ENQs; allocation; PPT; job termination; output phase.

Subsystem Interface (SSI)

Why Subsystem Interface?; SSI - a universal tool; The Master Subsystem (MSTR); ES services via SSI; Establishing a subsystem; Defining the subsystem to MVS; Setting up SSI; Starting a subsystem; Initialising a subsystem; Asking for subsystem service; SSI at work...; Dynamic SSI; Chapter Review; Subsystem Lab.

Resource Control

Resource serialization and how it is accomplished through the use of ENQ/DEQ sequences; shared DASD; GRS & Sysplex; locking; lock categories; SETLOCK, SPIN & SUSPEND; lock manager processing.

Program Manager

The search sequence used by the program manager when attempting to load a module; performance and load module integrity issues; using LOAD; LINK; XCTL; Linkage Stack; control blocks; JOBLIB/STEPLIB.


Units of work- SRBs & TCBs; dispatching sequence; address space structure; ASCB/ASXB contents; TCB contents.

Inter Address Space Communication

Hiperspaces; data spaces; cross memory services; service request blocks (SRBs); the cross-system coupling facility (XCF).

SVC Processing

Installing SVC routines in an MVS system; SVC types; SVC FLIH; status saving; SVC coding conventions; SVCUPDTE facility.

Recovery Termination Manager

Recovery routines available to user programs and the Recovery Termination Manager; RMS; program termination types; ESPIE; ESTAE; FRR routines.

Workload Manager

WLM's purpose; WLM's tools; compatibility mode; dispatching priorities; storage isolation; logical swapping; user & system think times; goal mode implications; classification rules; response time goals; velocity goals; discretionary goals.

Direct Access Storage Devices

Track formats; CKD format; RPS; VTOCs; DSCB types; VTOC Index; VTOC listing; Catalogs; opening data sets; SMS.

Data Management

Access methods; DCB concepts; OPEN & TIOT; DEB; DCB merge; open processing; channel programs; ECBs & IOBs; EXCP; QSAM; synchronising the I/O; analysing completed I/O; close processing.

IOS and its Drivers

IOS; IOS drivers & components; building an IOQ; building an ORB; CSS at work; I/O interrupt handler; post status; VSAM; control intervals; linear data sets; PDSEs; the ACB; open processing; Get & Put; VSAM control blocks.

Read more

Why choose QA

Dates & Locations

Frequently asked questions

See all of our FAQs

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.

Learn more about our Virtual Classrooms.

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.

Learn more about QA’s online courses.

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.

Contact Us

Please contact us for more information