Learn RPG-IV-AS400 with Real Code Examples

Minimize nested loops and unnecessary file I/O

Use SQL optimization for DB2 queries

Leverage service programs for reusable logic

Batch processing reduces interactive resource load

Index DB2 files for high-volume transactions

Restrict library and program object access via IBM i authorities

Validate input to prevent SQL injection

Follow IBM i security policies for data confidentiality

Audit job execution and data access logs

Encrypt sensitive data in DB2 where necessary

Monitor batch job logs

Check DB2 transaction counts and performance

Audit service program usage

Track interactive program errors

Analyze resource usage on IBM i system

Comment procedures and modules

Follow free-form syntax standards

Modularize repetitive logic into service programs

Validate input and output consistency

Maintain versioned source libraries