Learn RPG with Real Code Examples
Updated Nov 20, 2025
Learning Path
Start with fixed-format RPG IV
Learn file handling and record operations
Practice calculations and report formatting
Explore subprocedures and modular design
Integrate DB2 database operations
Skill Improvement Plan
Week 1: Basic RPG syntax and reports
Week 2: File I/O and calculations
Week 3: Subprocedures and modular coding
Week 4: DB2 integration and batch jobs
Interview Questions
What is RPG used for?
Difference between fixed and free-format RPG?
Explain RPG file I/O operations
How are subprocedures used in RPG?
How does RPG integrate with DB2?
Cheat Sheet
F-spec: file definitions
D-spec: data/variable definitions
C-spec: calculations
P-spec: procedures
RPG IV free-format: calculation statements in source lines
Books
RPG IV Programming on IBM i
Mastering RPG IV
RPG IV for Experienced Programmers
RPG IV by Example
Practical RPG IV Programming
Tutorials
Getting Started with RPG IV
File I/O in RPG
Subprocedures and Modular Design
Report Generation Examples
Legacy RPG Maintenance Techniques
Official Docs
IBM Knowledge Center: RPG Reference
IBM i RPG IV Programming Guide
IBM RPG manuals and technical notes
Community Links
IBM i developer forums
Reddit r/IBMi
LinkedIn RPG groups
Midrange Systems community
GitHub repositories for RPG examples
Community Support
IBM i developer forums
Midrange systems user groups
Reddit r/IBMi
LinkedIn RPG developer groups
IBM Knowledge Center resources