What are some common challenges Oracle programmers face when working on large-scale database projects?

Oracle Programmers often encounter challenges such as optimizing complex queries for performance, ensuring data integrity during large data migrations, and managing concurrent access in multi-user environments. Working on large-scale projects also requires close collaboration with database administrators, system architects, and application developers to align on best practices and ensure system reliability. Staying current with new Oracle features and security updates is crucial, as is troubleshooting unexpected issues that may arise in production environments.