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Provided by: Serebra Learning Corporation OS 390 MVS ESA Fundamentals of VSAM Part IIMVS TSO/ISPF |
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Training
Provided by Serebra Learning Corporation
This course explains how VSAM adds and deletes records to and from a KSDS. It describes how VSAM manages the space within the data components of the KSDS when it performs additions or deletions. Also covered is the organization and function of an alternate index, how and when an alternate index can be used, and how an alternate index relates to an existing ESDS or KSDS. It describes the role that catalogs play in maintaining and accessing VSAM datasets. It reviews the basic concepts of a catalog and shows how catalogs are used to locate and access a VSAM dataset. The course discusses master catalogs and user catalogs their uses, similarities and differences, examines the system datasets that are used to support the catalog facility and describes various ways to identify the catalog in which a dataset is described. It also explains how to use IDCAMS to create a KSDS file statement that defines a VSAM file and how to process a KSDS file. This course is designed for operators with previous JES2 experience
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OS 390 MVS ESA Fundamentals of VSAM Part II
Audience
This course is designed for operators with previous JES2 experience
Topics
Managing KSDS Storage Free Space in KSDS Control Interval and Control Area Splits Free Space Efficiency Considerations Dataset Reorganization Free Space Assignment Guidelines Alternate Indexes An Alternate Index Accessing a Base Cluster Alternate Index Applications The Role of Catalogs with VSAM Datasets The Catalog Environment System Datasets Used to Support Cataloging Identifying the Catalog to a Dataset Practical VSAM Applications VSAM Applications
Objectives
Upon completion of this course, the student will be able to:identify three ways that free space comes to exist in the data component of a KSDS demonstrate how VSAM processes a KSDS when asked to add or delete a record randomly describe the processing performed by VSAM during a control interval split describe the processing performed by VSAM during a control area split describe the effects of too much and too little free space determine whether the dataset should be defined with no free space, a minimal amount of free space, or a large amount of free space, given the description of a KSDS application illustrate the physical organization of an alternate index identify the different ways that a base cluster can be accessed through an alternate index identify appropriate applications for an alternate index describe the functions of catalogs list the similarities and differences between a master catalog and describe the information stored in each identify
About The Training Provider: Serebra Learning Corporation
Serebra Learning Corporation - Serebra Learning Corporation provides technology-based training solutions through a combination of Cortex, its proprietary learning management system (LMS), and a curriculum catalog with over 1,825 current courseware titles. Founded in 1987 (as FirstClass Systems, with a name change to Serebra in 2001), Serebra has over sixteen years" experience delivering e-learning solutions to both...
