I gave a presentation at the last OpenWorld conference oriented towards Oracle DBAs new to Exadata, and you might find it interesting: https://oracleus.activeevents.com/2013/connect/sessionDetail.ww?SESSION_ID=9791 If the slide link doesn't work they're on SlideShare as well: OOW13: Accelerate your Exadata deployment with the DBA skills you a...
If you are familiar with Real Application Clusters (RAC), Automatic Storage Management (ASM) & Recovery Manager (RMAN) then you are done with Oracle Exadata. Because Exadata will comes with the above three technologies.
Exadata Features are available as Data Sheets :
1. Smart Scan
2. EHCC (Columnar Compression)
3. Storage Index
4. Write Back Flash Cache
5. Smart Flash Log
Other than the above we have to work on "Cellcli" Command line based tool like "asmcmd"
Hope it helps...