Java Only Configuration (SCS)

The Java Only Configuration comprises the installation of:

• Central Services Instance for Java (SCS Instance)

• Enqueue Replication Server Instance (ERS Instance) for the SCS Instance (optional)

• Database Instance (DB Instance)

• Primary Application Server Instance (PAS)

• Additional Application Server Instances (AAS) – It is recommended that Additional Application Server Instances (AAS) be installed on hosts different from the Primary Application Server Instance (PAS) Host

Switchover Cluster for a Java Only System (SCS)

In the above example, SCS is in a separate LifeKeeper hierarchy from the Database. Although it is active on the same server as the Database, they can fail over separately.

*Note: An ERS resource created in LifeKeeper for Linux v9.4.0 or later will operate in its own independent hierarchy. See ERS Resource Types in LifeKeeper for more details.