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Oracle® Database RAC FAN Events Java API Reference
11g Release 2 (11.2)

E13993-01


Package oracle.simplefan

Provides easy access to Oracle Fast Application Notification (FAN) events.

See:
          Description

Interface Summary
FanEventListener  
FanSubscription  

 

Class Summary
FanEvent This abstract class supports three types of FAN events: service events, node down events, and load advisory (RLB) events.
FanManager The sole instance of this class is used to manage access to FAN events.
LoadAdvisoryEvent This FAN event provides advice that directs load balancing for subscribers.
NodeDownEvent The event posted when a node goes down.
ServiceDownEvent A container that can hold both kinds of service events.
ServiceDownEvent.ServiceMemberEvent The service member event that reflects the status change of a service on a particular instance (and node).

 

Enum Summary
LoadAdvisoryEvent.LoadStatus  
ServiceDownEvent.EventKind  
ServiceDownEvent.Reason  

 

Package oracle.simplefan Description

Provides easy access to Oracle Fast Application Notification (FAN) events. FAN events are produced by Oracle Real Application Cluster (RAC) clusters to communicate significant changes in cluster state. This package provides easy access to a subset of FAN messages. The subset is sufficient to satisfy most user needs while the simple API hides the full complexity of the complete FAN event mechanism.

This package supports four FAN events.

Load Balancing Advisory
contain information that aids distributing work
Service Member Down
reports than one member instance of a service is down
Service Composite Down
reports that all member instances of a service are down
Node Down
reports that a node (host) is down

ons.config

localport=4100
remoteport=4200
loglevel=3
nodes=myhost.myco.com:6200

Related Documentation

For overviews, tutorials, examples, guides, and tool documentation, please see:
Oracle® Database RAC FAN Events Java API Reference
11g Release 2 (11.2)

E13993-01

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