How can I diagnose this error when using an ORM (Object-Relational Mapper)?

ORMs often abstract away the underlying database connection details. Enable logging at the database driver level (e.g., JDBC logging) to see the raw SQL queries being executed and the communication between the application and the database. This can help pinpoint slow queries or connection issues. Also, check the ORM's configuration for timeout settings that might be overriding the driver-level settings.