On the top row of this graphic are three icons: Enterprise Manager, Recovery Manager, and Oracle Recovery Catalog. They are connected by double-headed arrows. On the second row, which is labeled "Oracle Server Sessions," are Target Oracle Database and four Oracle Server Session icons. The session icons are connected to Recovery Manager with double-headed arrows. The last row, labeled "Tertiary Storage Subsystems," has four disk and tape icons. Each icon is connected to a Server Session with a double-headed arrow.