High Availability
High availability is an option that eliminates a single point of failure in a domain and provides minimal service interruption in the event of failure. High availability consists of the following components:
- •Resilience. The ability of application services to tolerate transient network failures until either the resilience timeout expires or the external system failure is fixed.
- •Failover. The migration of an application service or task to another node when the node running the service process becomes unavailable.
- •Recovery. The automatic completion of tasks after a service is interrupted. Automatic recovery is available for PowerCenter Integration Service and PowerCenter Repository Service tasks. You can also manually recover PowerCenter Integration Service workflows and sessions. Manual recovery is not part of high availability.