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VSAM essentials workshop

This course describes and explains the access method concepts in MVS and the structure and design of VSAM files. It teaches how to create VSAM files using the utility Access Method Services (AMS), both from a functional as well as a performance point of view. Additionally, it provides the Systems Programmer and Operational Analyst with information on the structure of ICF catalogs and the related VTOC and Index VTOC. Online exercises provide experience in creating, accessing and managing VSAM files. Attendees will create and use clusters, alternate indexes and paths.

Students learn to:

Schedule

dateduréelang.  lieu  prix
13 Nov3EHigh Wycombe  (GB)1425 GBP  (excl. TVA) 
06 Dec3Eweb based 1800 EUR  (excl. TVA) 
INFO SESSION ET INSCRIPTION

Intended for

This course is valuable for anyone who creates, maintains, or manages VSAM data sets.

Background

To benefit from this course participants need: a background in creating and submitting jobs for execution in a TSO environment. A working knowledge of JCL (see courses ISPF/PDF basics and JCL). Experience in sequential and direct-access file usage.

Main topics

MVS and I/O processing; MVS access methods; VSAM terminology; VSAM dataset structures: ESDS, RRDS, KSDS, linear datasets; ICF catalogs and VTOCs.

Control Areas; Control Intervals; CI structure ppanned records; CI splits; CA splits.

Modal commands; creating VSAM clusters; Modal command examples; error messages.

Define command; define cluster parameters; space allocations; defining ESDS, KSDS & RRDS.

Listcat command; listcat options.

Management commands; REPRO; REPRO options; copying & merging.

Defining an AIX; BLDINDEX; UPGRADE vs UPDATE; using AIX.

IMBED; bufferspace; KSDS space requirements; NSR; LSR.

Problems; VSAM JCL; file I/O problems; diagnostic tools; damaged data.

Training method

Lecturing and exercises.

Duration

3 days.

Course leader

RSM Technology.


INFO SESSION ET INSCRIPTION