KEEP (retain data set), DELETE (remove data set), CATLG (add to system catalog), or UNCATLG (remove from catalog). Advanced JCL Techniques

The DISP parameter governs the status of a data set using a three-field syntax: DISP=(status, normal-termination, abnormal-termination) .

: Many of these documents are divided into parts (e.g., Part 1 for COBOL/JCL, Part 2 for DB2/CICS). If you are preparing for a specific role, prioritize the Interview Q&A sections often found at the end of these guides. Mainframe Refresher.

DISP (Status, Normal Disposition, Abnormal Disposition), SPACE (Primary and Secondary allocation), and DCB (Data Control Block attributes like LRECL and RECFM). ⚙️ 3. Transaction Processing: CICS