This illustration shows the hierarchy of high availability architectures. At the base of the high availability pyramid is the core database, which includes the following high availability features:
Flashback technologies
Online redefinition and reorganization
Managed backup and recovery
At the next level of availability are the following architectures:
Oracle Database 10g with RAC
Oracle Database 10g with Data Guard
Oracle Database 10g with Streams
Oracle Database 10g with RAC has the following high availability features:
Fast node and instance failover
Rolling patch upgrade
Oracle Database 10g with Data Guard has the following high availability capabilities:
Disaster recovery
Rolling database upgrade
Steams has the following high availability capability:
Replication
At the top of the high availability pyramid is the most highly available architecture, Maximum Availability Architecture, which builds on Oracle Database 10g with RAC and Oracle Database 10g with Data Guard.
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