The goal of this VSAM tutorial is for who have not had practical experience and for experienced developers. It is presented in simple English including handling files, errors handling and day to day use all utilities in VSAM.
Here is a logic to Delete alternative index in VSAM intelligently.
These are awesome advantages of VSAM files over Sequential files.
Single point reference to VSAM tuning tips. These are useful for mainframe projects.
The differences between variable and fixed-length records, I have simplified and posted these.
VSAM file access modes given in this post to handle VSAM files in COBOL modules.
Why you need RLS? RLS allows concurrent access in a sysplex to your VSAM data…
The KSDS one of the popular file organisation of VSAM. Most popular in CICS. It has really good benefits and this is the reason it is being used in online CICS programs. Read more.
JCL to copy VSAM dataset to non-vsam dataset using IDCAMS utility.
VSAM alternate index is built by IDCAM BLDINDEX parameter. In the below JCL the IDS is…
VSAM is also called virtual storage accessing method. Most popular in mainframe. The alternate index is a tricky concept in VSAM. Provided list of popular interview questions for your reference.
VSAM also called virtual storage access method. Try these questions. Readily useful for your projects.