CICS VSAM Transparency for z/OS, Version 1.2


Defining VSAM files to CICS VT

This section explains how you use CICS® VT to migrate VSAM files to DB2® and is aimed at DBAs and application developers. You should read this information thoroughly before you start to migrate your first file.

Your first file should be of low importance and ideally standalone. The more files you migrate, the more familiar you become with the capabilities of CICS VT and the data migration process. You might decide to go back and change some aspects of a file you have previously migrated, to change the DB2 table design for example. CICS VT allows you to do this. By starting with a simple, low-risk file, going back to make these changes will not incur a significant retesting overhead.

There are two different methods to migrate a VSAM data set using CICS VT:

You should be able to migrate most files using the automated mapping facility, but this depends on how the file is defined in the copybook. This chapter explains how CICS VT helps you decide which method to use, and what needs to be done in both cases.





Last updated: February 8, 2013 20:42:52