I do not know the latest but If you see Oracle and DB2 certifications syllabus you can have a better opinion. For me, some topics are (by using VirtualBox) you can speak about

• Oracle RAC
• Oracle stands by
• Disaster Sites
• Backup & Restore
• Partial Backup & Restore
• Migrations of DB
• Extraction of Data
• a very good theme is DB Tuning
• and many more