Oracle High Availability
An effective High Availability (HA) solution must address both unplanned and planned causes of downtime to achieve a truly fault tolerant and resilient IT infrastructure. Unplanned downtime is primarily the result of computer failures, data failures and human error. Planned downtime is primarily due to data changes or system changes that must be applied to the production system
Equally important, a HA solution must be practical to implement; minimising acquisition cost and operational complexity, while being able to efficiently scale-out to meet any performance requirement as business needs evolve.
Oracle Database 11g Release 2 provides integrated, Oracle-aware capabilities to address both planned and unplanned downtime and can be deployed on a lower-cost, highly resilient systems architecture that can scale-out to handle any performance requirement.
- Oracle Active Data Guard - Oracle Data Guard protects data from failures, disasters, errors and data corruptions. Oracle Data Guard provides the management, monitoring and automation software infrastructure to create and maintain one or more remote standby databases.
- Oracle Real Application Clusters - Oracle Real Application Clusters (Oracle RAC), with Oracle Database 11g Enterprise Edition, enables a single database to run across a cluster of servers, providing unbeatable fault tolerance, performance and scalability with no application changes necessary.
Oracle High Availability Options include;