CICS VSAM Transparency for z/OS, Version 1.2


Step 1 - Identify the files to be migrated

Migration is an iterative process. This first step is to decide which file or files you want to migrate at the same time. You must choose a unique name for each base cluster data set. This is referred to in CICS® VT as the DIM. You should use a maximum of 7 characters for the DIM name. The reason for this is explained in The DDM driver module name. You can migrate files individually, or collectively. CICS VT refers to this as a migration unit. CICS VT does not impose any rules; make your decision based on factors such as the criticality of the file, its size, and the required availability.

You might decide to migrate the file at the same time as you make other routine application changes, in order to reduce application testing.





Last updated: November 9, 2012 20:42:46