Mainframe Interview Questions
13+ Scenario-Based Questions
Comprehensive collection of mainframe interview questions covering all major technologies including z/OS, COBOL, JCL, CICS, DB2, IMS, VSAM, and more.
Perfect for interview preparation, knowledge assessment, and continuous learning. Each question includes detailed scenarios, expected answers, red flags, and follow-up questions.
All Questions
COND Parameter - Multi-Step Job Control
JOBLIB vs STEPLIB - Library Management Crisis
File Conversion - FB to VB Performance Challenge
S0C7 ABEND - Production Crisis Under Pressure
Space ABENDS - S37/SB37/SD37 Resolution Strategy
ASSRANGE - Array Boundary Violation in Production
Level 88 - Complex Business Logic Simplification
Multi-Row Fetch - Batch Performance Optimization
DB2 Isolation Levels - Concurrency Crisis
CICS LINK vs XCTL - Transaction Design Decision
GDG Management - Batch Window Crisis
SEARCH vs SEARCH ALL - Performance Tuning
Checkpoint/Restart Logic - Long-Running Batch
Topics Covered
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