A documentation-reviewed guide to self-managed Oracle HTTPS calls: protected wallets, narrow network access, safe configuration and visible HTTP failures. Includes revised examples and explicit testing limits.
Oracle Dev Gym offers free SQL and PL/SQL quizzes, workouts and classes. Here is how I use it for practice, how to choose a starting point, and how class certificates differ from professional certification.
A practical walkthrough of apex-error-logger, my open-source PL/SQL framework for application-specific error context, autonomous log records, Scheduler instrumentation, retention and an administrator-only APEX log viewer. It complements native APEX debug messages and Scheduler run details.