Planning the Sun Cluster HA for Sun Java System Application Server EE (HADB) Installation and Configuration

This section contains the information that you need to plan your Sun Cluster HA for Sun Java System Application Server EE (HADB) installation and configuration.

Configuration Overview

Use the multiple masters configuration in this section to plan the installation and configuration of the Sun Cluster HA for Sun Java System Application Server EE (HADB). The Sun Cluster HA for Sun Java System Application Server EE (HADB) data service might support additional configurations. However, you must contact your Enterprise Services representative for information about additional configurations.

HADB configurations are defined by data nodes, or a collection of processes. Each node is a dedicated area of main memory with one or more secondary storage devices. These storage devices are not shared storage. Each HADB data node must have exclusive access to an area of main memory and several areas of disk space. HADB data nodes are active or spare.

The recommended minimum requirement for a cluster running the Sun Java System Application Server EE (HADB) and the Sun Java System Application Server is four active data nodes plus two spare nodes. See Creating a Sun Java System Application Server EE (HADB) Database for an example of how to create a Sun Java System Application Server EE (HADB) with four active and two spare nodes by using the hadbm comand-line utility. For high availability, you configure the HADB data redundancy unit (DRU) to use the Sun Cluster interconnect. See the Sun Java System Application Server documentation for detailed information about DRUs. The HADB JDBC driver in the client application handles highly-available access to the database.

The following figure illustrates the recommended minimum configuration for the Sun Java System Application Server EE (HADB) and the Sun Java System Application Server.

Figure 1–1 Recommended Minimum Configuration

Configuration Planning Questions

Use the questions in this section to plan the installation and configuration of the Sun Cluster HA for Sun Java System Application Server EE (HADB). See “Considerations” in Sun Cluster Data Services Planning and Administration Guide for Solaris OSfor information that might apply to these questions. If you choose to use your HADB data service service with another highly available application, resource dependencies might exist. See “Standard Properties” in Sun Cluster Data Services Planning and Administration Guide for Solaris OS for a description of the Resource_dependencies property.

• Will all history files, data and log devices, and the database configuration files reside on local file systems?

• What are the Sun Cluster private interconnect hostnames that you will use?