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Sun Cluster Data Service for Sun Java System Application Server Guide for Solaris OS

Highly Available Components

The Sun Java System Application Server supported versions as of 8.1 consists of several components.

Implementation of the Sun Cluster HA for Sun Java System Application Server does not assume the existence of programs on which your architecture depends. Programs on which your architecture depends such as databases and web servers should be configured to be highly available, but can run on a different cluster.

Highly Available DAS and NA

The Sun Cluster HA for Sun Java System Application Server provides high availability that complements the high availability provided by the Sun Java System Application Server Enterprise Edition. The Sun Cluster HA for Sun Java System Application Server makes the Domain Administration Server highly available by running it as a failover Sun Cluster data service. The Node Agents are made highly available by running them as a failover Sun Cluster data service. As a functionality provided by the Sun Java System Application Server Enterprise Edition, the Node Agents in turn make the Sun Java System Application Server instances highly available.

Highly Available Transaction Logs

The Sun Cluster HA for Sun Java System Application Server makes the transactions highly available. When a node running an instance of the Sun Java System Application Server crashes, transactions are lost unless they are recovered by other running instances, running on a different node. Transactions can also be recovered by restarting the crashed server instance on the same node or on a different node. Because the Node Agents are configured as a failover data service, the data service fails over the crashed instances to other Sun Cluster nodes so that when the server is starting up on a new Sun Cluster node the transactions are recovered.

Highly Available Message Queue and HADB

The Sun Java System Application Server EE installs the Sun Java System Message Queue and the Sun Java System Application Server EE (HADB).

See Sun Cluster Data Service for Sun Java System Message Queue Guide for Solaris OS for information about configuring the Sun Java System Message Queue for high availability.

See Sun Cluster Data Service for Sun Java System Application Server EE (HADB) Guide for Solaris OS for information about configuring the Sun Java System Application Server EE (HADB) for high availability.