9.2.1 Exadata Snapshot Concepts

There are various object you need when creating and using Exadata Snapshots.

• Sparse Grid Disks
  A sparse grid disk has a virtual size attribute as well as physical size.
• Sparse Disk Groups
  Exadata Snapshots utilize Oracle ASM sparse disk groups.
• Sparse Database and Sparse Files
  In a sparse database, such as an Exadata Snapshot database, its data files are sparse files.