What is IDCAMS?

IDCAMS (Information Definition for VSAM and SAM) is a utility program that is used to define and manipulate VSAM (Virtual Storage Access Method) and SAM (Sequential Access Method) data sets on IBM mainframe operating systems such as z/OS. IDCAMS can be used to create, delete, alter, and display information about VSAM and SAM data sets, as well as perform other tasks such as defining paths and keys for VSAM data sets, and allocating and deallocating storage for data sets. IDCAMS is a powerful tool for managing data sets on mainframe systems and is widely used by system administrators and DBAs.