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.

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