---------------------------- Study Guide for MVS JCL Text ---------------------------- -IAN! idallen@ncf.ca Make good use of the JCL parameter list on page xi. It's faster than the index. Chapter Two ----------- Be familiar with the Concepts and Vocabulary: Section 2.1 Skim the Hardware Architecture history: 2.2 Understand Data Records: 2.3.2 - tokenized vs. OS/390 record data - types of records (three types) - logical records vs. physical records (blocks) - blocking data on the storage device - why block the data? - data set organization - sequential organization Data Storage: 2.4 - Direct Access Storage Devices (DASD) - note the quaint language about 9GB disk drives! - Magnetic Tapes (For all the fine details, see: http://www.discinterchange.com/mainframe_tape_details.html - all about mainframe tapes) Chapter Three ------------- "Don't worry about understanding the details because we'll cover them later." (p.37) 3.1 Essential JCL statements (ALL) - all five points 3.2 Computer Jobs (ALL) 3.2.1 The JOB statement 3.2.2 The EXEC statement 3.2.3 The DD statement - note especially the "DD *" statements for input-stream data 3.3 Creating programs (ALL) - VERY IMPORTANT: C.L.G.: Compile, Link, GO (p.43-44), Fig.3.5 3.4 Sort example (basic understanding; not the details)) - Fig.3.6 3.5 C.L.G. example (basic understanding; not the details) - note carefully the three basic steps: Compile, Link, GO - Fig.3.8, 3.9, 3.10 - note what is produced by each step - note what is required as input by each step 3.6 Cataloged procedures (basic understanding; not the details) Chapter Four ------------ Introduction (Essential!) 4.1 - 4.7 All 4.8 only #2 JOB, #8 EXEC, #11 DD, #12 EXEC, #13 // - p 61 middle: - only #1: DD with same DDname - only #4: DD statements over-riding cataloged procedure statements Other Chapters -------------- Study the relevant parts of the other chapters as they come up in class. Do not try to read the rest of the book - it is a reference manual, not a tutorial. Study only the relevant statements and parameters that are mentioned in class.