The Top 5 Mistakes AS400 RPG Developers Should Avoid

In the ever-evolving world of technology, AS400 RPG developers hold a special place due to their niche skills in maintaining and developing legacy systems. However, working within this specialized field comes with its own set of challenges and pitfalls. Whether you're a seasoned RPG developer or just starting in the AS400 realm, understanding the common missteps can greatly enhance your productivity and success. Let's delve into the top five mistakes AS400 RPG developers should avoid.

1. Ignoring the Importance of Modernization

The AS400 system, while robust and reliable, has been around for decades. One common mistake developers make is the reluctance to modernize old code. Legacy RPG programs can be inefficient and difficult to maintain. By ignoring modernization, developers risk falling behind in an industry that is increasingly demanding modern, agile solutions.

Modernization can take several forms, from adopting RPG IV over RPG III to utilizing Rational Developer for i (RDi) instead of traditional green screen tools. Embracing these changes can lead to significant improvements in productivity and system performance.

2. Failing to Prioritize Documentation

Documentation might not be the most glamorous part of a developer's job, but it is crucial for the longevity and usability of a system. Developers often make the mistake of underestimating the value of thorough documentation. Poor documentation can lead to future headaches, as it impedes system understanding and maintenance for other developers and even for the original developer if the project is revisited after some time.

Comprehensive documentation should include detailed comments within the code, well-written user guides, and operational manuals. This practice not only aids in personal understanding but also facilitates efficient knowledge transfer and onboarding processes.

3. Neglecting to Test Rigorously

Another critical mistake is the insufficient testing of programs. It is easy to assume that a program will function correctly after writing it, but untested programs can have hidden issues that surface later, leading to major operational disruptions.

To avoid this, developers should adopt a rigorous testing routine, which includes:

• Unit testing: Testing individual components of the program to ensure that each part functions as intended.
• Integration testing: Ensuring that different program modules work together correctly.
• User acceptance testing: Verifying the program meets business and user expectations.

4. Underestimating the Importance of Version Control

In the current software development landscape, version control systems like Git are indispensable. However, many RPG developers still rely on outdated methods for code management. This can lead to a range of issues, from losing track of changes to corrupting entire projects due to lack of backups.

Implementing a robust version control system allows for better collaboration, easier tracking of changes, and the ability to roll back to previous versions of the code when necessary. It also facilitates collaboration among developers, which is essential in large projects or when multiple developers are involved.

5. Disregarding Continuous Learning and Development

The field of software development is one that never stands still, and neither should the skillset of RPG developers. A critical mistake is the complacency in continuous learning. As technology evolves, staying current with the latest developments in both the AS400 and broader IT ecosystem is imperative.

This involves:

• Keeping up with industry advancements: Reading relevant blogs, attending webinars, and participating in forums.
• Engaging in professional development: Pursuing certifications, attending conferences, or enrolling in workshops.
• Networking with peers: Learning from other developers and sharing expertise can provide fresh perspectives and solutions.

By maintaining a mindset of lifelong learning, RPG developers can not only improve their own capabilities but also ensure they contribute effectively to their teams and organizations.

Conclusion

While working with AS400 systems presents its own unique set of challenges, by recognizing and avoiding common pitfalls, RPG developers can enhance their effectiveness and contribute to successful project outcomes. Embracing modernization, diligent documentation, rigorous testing, effective version control, and continuous learning can significantly elevate the quality and impact of an RPG developer's work.