This course explains how VSAM data can be configured, allowing it to be shared by jobs, TSO users, UNIX processes and started tasks. It also addresses recovery options available when VSAM data is shared. A detailed explanation of parameters affecting VSAM performance is covered as well as the types of utilities used to capture VSAM performance statistics.
This course is designed for Application Programmers, and Systems Programmers.
Successful completion of the Interskill VSAM – Defining, Altering, and Deleting VSAM Data Sets course, or equivalent knowledge.
After completing this course, the student will be able to:
- Describe how VSAM file sharing and VSAM Record Level Sharing works
- Identify how VSAM performance can be improved
VSAM File Sharing
Sharing a VSAM Data Set
VSAM Cluster SHAREOPTIONS Attribute
Cross System Sharing
VSAM Record Level Sharing (RLS)
Planning for RLS
Transactional VSAM Services – DFSMStvs
DFSMStvs Forward Recovery
Control Interval Size
Control Area Size
CI and CA Splits
Speed and Recovery Attributes
VSAM Buffer Use
Obtaining Performance Statistics Using LISTCAT and LISTSTAT
RMF Monitor III