Using variable-length RRDS

To use relative-record data sets (RRDS) that have variable-length records, you must use VSAM variable-length RRDS support.

Do these steps:

  1. Define the file with the ORGANIZATION IS RELATIVE clause.
  2. Use FD entries to describe the records with variable-length sizes.
  3. Define the VSAM file through access-method services as an RRDS.

related tasks  
Defining VSAM files

related references  
z/OS® DFSMS: Access Method Services for Catalogs