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.