Getting Started on Mainframe with z/OS Commands and Panels

Start Date: 02/16/2020

Course Type: Common Course

Course Link:

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About Course

Getting Started with the IBM Mainframe with z/OS Commands and Panels is a mostly hands-on in an IBM Mainframe z/OS Environment. A total of seven labs will provide live access to an IBM Z server. The labs are designed to teach you the fundamental practical skills to navigate and work in a z/OS environment. This includes the use of ISPF/PDF dialogs, and TSO/E commands. On successful completion of this course, the learners are eligible to claim the Getting Started on Mainframe with z/OS Commands and Panels badge. More information can be found here:

Course Syllabus

Introduction to Commands and Panels
Working with Data Sets
TSO Commands

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Course Introduction

Getting Started on Mainframe with z/OS Commands and Panels This course is all about command-line interfaces and how to navigate the command-line using the command line interface (CLI). This is the third course in the specialization. The first course covered programming in Python using the command line using the Python 3. The second course covered configuration management using the command line using the Linux style configuration file. Both courses can be found under "Programming in Python 3" and "Configuration Management in Python 3" sections. This course assumes you have the prerequisite knowledge from the other courses in the specialization. You should make sure you have that knowledge, either by taking those previous courses or from personal experience, before tackling this course. The course also assumes you are comfortable with using the command line in a Python environment. This course assumes you have access to a virtual Machine (VirtualBox, Vmware). You can use any computer with a modern, fast processor (not just desktop computers). You should have access to documentation about command line interfaces (CLIs). You should have experience using command line editing tools (not just editing files in a text editor). You should understand how the command line works, including how to insert commands and how to use the command line to navigate the code. You should be able to use different editing tools to manipulate the code, including diff, code blocks, and other files in the codebase. You should be able to use different tools to run different commands in parallel. You should understand how to use different command line

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Z/OS z/OS introduced Variable Workload License Charges (VWLC) and Entry Workload License Charges (EWLC) which are sub-capacity billing options. VWLC and EWLC customers only pay for peak monthly z/OS usage, not for full machine capacity as with the previous OS/390 operating system. VWLC and EWLC are also available for most IBM software products running on z/OS, and their peaks are separately calculated but can never exceed the z/OS peak. To be eligible for sub-capacity licensing, a z/OS customer must be running in 64-bit mode (which requires z/Architecture hardware), must have completely eliminated OS/390 from the system, and must e-mail IBM monthly sub-capacity reports. Sub-capacity billing substantially reduces software charges for most IBM mainframe customers. Advanced Workload License Charges (AWLC) is the successor to VWLC on mainframe models starting with the zEnterprise 196, and EAWLC is an option on zEnterprise 114 models. AWLC and EAWLC offer further sub-capacity discounts.
Getting Started Getting Started is a 1979 animated short by Richard Condie and produced in Winnipeg by the National Film Board of Canada.
Mainframe audit A mainframe computer is not easy to define. Most people associate a mainframe with a large computer, but mainframes are getting smaller all the time. The terms "mainframe" and "enterprise server" are converging.Supercomputers are generally used for their speed and complexity, while mainframes are used for storing large volumes of sensitive data.
IBM mainframe The primary operating systems in use on current IBM mainframes include z/OS (which followed MVS and OS/390), z/VM (previously VM/CMS), z/VSE (which is in the DOS/360 lineage), z/TPF (a successor of Airlines Control Program), and Linux on z Systems such as SUSE Linux Enterprise Server and others. A few systems run MUSIC/SP and UTS (Mainframe UNIX). In October 2008, Sine Nomine Associates introduced OpenSolaris on System z.
Z/OS z/OS supports stable mainframe systems and standards such as CICS, COBOL, IMS, DB2, RACF, SNA, WebSphere MQ, record-oriented data access methods, REXX, CLIST, SMP/E, JCL, TSO/E, and ISPF, among others. However, z/OS also supports 64-bit Java, C, C++, and UNIX (Single UNIX Specification) APIs and applications through UNIX System Services – The Open Group certifies z/OS as a compliant UNIX operating system – with UNIX/Linux-style hierarchical HFS and zFS file systems. As a result, z/OS hosts a broad range of commercial and open source software. z/OS can communicate directly via TCP/IP, including IPv6, and includes standard HTTP servers (one from Lotus, the other Apache-derived) along with other common services such as FTP, NFS, and CIFS/SMB. Another central design philosophy is support for extremely high quality of service (QoS), even within a single operating system instance, although z/OS has built-in support for Parallel Sysplex clustering.
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Linux on z Systems Linux runs on standard, general purpose mainframe CPs (Central Processors) as well as IFLs (Integrated Facility for Linux). IFLs are mainframe processors dedicated to running Linux, either natively or under a hypervisor (z/VM or KVM on z). Microcode restricts IFLs from running "traditional" workloads, such as z/OS, but they are physically identical to other z System processors. IFLs are typically less expensive to acquire from IBM than CPs.
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Z/OS Within each address space, z/OS typically permits the placement of only data, not code, above the 2 GB "bar". z/OS enforces this distinction primarily for performance reasons. There are no architectural impediments to allowing more than 2 GB of application code per address space. IBM has started to allow Java code running on z/OS to execute above the 2 GB bar, again for performance reasons.
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