Mainframe 5 Modules - TSO/ISPF, JCL , VSAM, SDSF, Z/OS-UNIX

Explore how to connect to the mainframe using emulators, establish an internet connection and login ID, and preview the mainframe modules such as TSO/ISPF, JCL, VSAM, SDSF, and Z/OS UNIX.

Explore JCL, the job control language, and how it orchestrates batch COBOL programs from compile to execution, and manages input data and datasets.

Learn how VSAM, a mainframe storage access method, functions as a COBOL data store, using aliases and VSAM files to create, access, and delete data via batch and online processes.

Discover mainframe tools for core basics, including version control, debugging aids, and file handling, and see how COBOL programs are managed in production with change tracking.

Master the move line command in the mainframe editor to relocate single or multiple records after or before a target position, using M, A, and B options.

Learn how to delete a single record, a set of records, or a group of records in a dataset using ISPF edit, including counting records and the B command.

Explore line commands from the dataset list to copy and move datasets, view dataset information, and manage properties across type one and type three datasets.

Navigate the unix file system by listing with ls and ls -l, using cd and pwd, creating directories and files, and setting permissions with chmod 777 input1.

Identify JCL by its three sections—the job, the exec, and the data steps—and by recognizing the job name, accounting info, comments with star, and end marker //.

Explore how the keyword parameter msglevel controls message volume and job status, with default 1,1 and values 0 0, 0 1, 1 1 indicating normal or abnormal termination.

Explore the keyword parameter PRTY to prioritize mainframe jobs, understand priority ranges from 0 to 14, and apply high priority during production support to accelerate critical jobs.

Explore the notify keyword parameter to send job status notifications to a specific user or your own id, indicating completion and exit codes zero, four, or eight.

Understand the dd statement with space attributes, specifying auxiliary storage space in tracks, blocks, bytes, or cylinders, and distinguishing between primary and secondary memory.

Discover how to create a temporary dataset for a utility, grasp its scope limited to the batch job, and use ampersand to name and manage the temporary file.

IEBCOPY copies members from one PDS to another using input and output PDS, a defined job, and program IEBCOPY, with online and batch options and include or exclude controls.

This lecture demonstrates IEBCOPY Compress - 2, showing an alternate way to compress a copy, handle society dataset names, submit the job, and verify compression across members.

Create a GDG generation and copy the daily payment file to a new generation, exploring scratch vs no-scratch behavior and weekly data retention in Z/OS datasets.

Explain how, in JCL, the conditional parameter cannot be used at the job level, and how using 0 0 runs only the first step and bypasses the rest.

Learn about procs, reusable components that group statements and steps for reuse across activities. Compare instream procs and catalog procs and their use across environments.

Explore catalog proc fundamentals, using stream procs to define steps that create datasets and override symbolic parameters, and learn how to call procs and manage dataset names.

Learn to sort mainframe data with sort card type 2, choosing ascending or descending order by specific fields, such as account numbers or balances, including multi-field sorts.

Explore sort type 11 to split an input file into multiple output files by conditions like names or salary, and prefer a simple shortcut over full Cobol coding.

Understand how to read a mainframe job’s overall status and per-step return codes using the maximum condition code, SDSF views, and how to troubleshoot by inspecting steps and messages.

Discover VSAM, a mainframe storage method that stores data in clusters for secure, large-volume master data with random, key-based access and faster retrieval than flat files.

Contrast sequential (flat) files with VSAM, noting flat files offer only sequential access and VSAM provides random access by key, created by IDCAMS and stored in catalogs, with secure retrieval.

IDCAMS ALTER demonstrates renaming VSAM clusters and their components (cluster name, data component, and index component) using submit steps and verification.

Create an esd dataset as an entry sequential file with fixed or variable length records, noting deletions aren’t possible and data can be loaded to a flat file for removal.

Contrast KSDS and ESDS by noting KSDS has an index and data component, enabling key-based access, while ESDS stores data with a single data component and uses relative byte addresses.

Recap VSAM on the virtual storage access method, data storage, sequential or random access, cluster data and index, repro copying between flat files and VSAM, and alter or delete operations.

Learn what an alternate index (AICS) is and how to create it to access data by non-primary keys, using examples like policy numbers and SSN.