| Topic | Question in Interview | Answer from Refresher | | :--- | :--- | :--- | | JCL | Difference between SHR and OLD ? | SHR allows concurrent reads; OLD is exclusive control. | | VSAM | What is a CI split? | Control Interval split – occurs when a record doesn’t fit. | | COBOL | 88-level condition names? | Conditional variable names for readability (e.g., 88 WS-VALID VALUE 'Y' ). | | CICS | What is a deadlock? | Two transactions waiting for resources locked by each other. | | z/OS | What is an APF-authorized library? | Libraries that can run privileged system programs. |
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While the original physical handbook is known for its "handy size" and clear explanations, digital versions in PDF and DOC format are widely shared across technical repositories and cloud drives. JCL Basics and Job Control Overview | PDF - Scribd | Topic | Question in Interview | Answer