Your host during aftrenoon is:
2:00pm – 2:45pm (CEST) 
But that worked yesterday! Testing with utPLSQL
speaker: Samuel Nitsche
3:00pm – 3:45pm (CEST)
SQLcl – SQL*Plus with benefits
speaker: Erik van Roon
4:00pm – 4:45pm (CEST)
Extreme Exadata: Top 10 Analytics Techniques to Maximize Performance
speaker: Ashish Agrawal
5:00pm – 5:45pm (CEST)
REST, HTTP, and ORDS 101 for the Oracle Database Developer
speaker: Jeff Smith