OUGN 2026

Gateway to Hell – Network Basics for DEVs, DevOps and the Data Layer

New environments are increasingly based on the software-defined data center, both on-premises and in the cloud. However, more conventional approaches also require developers or DevOps teams to understand and handle the network stack. Knowledge of this basic technology is more relevant today than ever before – even if, at its core, it is mostly a creation of the 1980s and 90s.

With a twinkle in our eye, we answer the following questions, among others:
– What’s so great about the classless society?
– What does a salami pizza have to do with network technology?
– If Superman likes supernetting, who does subnetting?
– How do nuclear weapons affect network design?
– If my routes come from the satnav, what do I need a router for?
– Who has DNS in their DNA?

We would like to invite all developers, DevOperators and database engineers to rediscover the basics of network technology with us. Everything seen through the practical eyes of two experienced, strictly practice-oriented Linux users. The lecture is therefore aimed at experienced IT professionals who have only little touch with network technology in their daily work and would like to broaden their horizons.

TNS Connections – What Could Possibly Go Wrong?

More than you might think. Firewalls, TCP timeouts, idle connections, SCAN and local listeners, or version mismatches between client, database, and connectors – all of these can impact TNS connections and cause unexpected errors. This session uses real-world examples to show the most common root causes, demonstrate relevant analysis tools available at both the database and operating system level, and explain the role of encryption, character sets, and NLS settings.

Complemented by selected special topics, the talk offers a collection of proven troubleshooting tips, best practices, and “aha” moments from real projects – ensuring that TNS connections are no longer a point of uncertainty, but a reliable part of your system.