Sun Cluster HA for MaxDB Overview

To eliminate single points of failure in an MaxDB system, Sun Cluster HA for MaxDB provides the following features:

• Fault monitoring and automatic failover for the MaxDB application. You must configure Sun Cluster HA for MaxDB as a failover data service.

• Fault monitoring and automatic restart for SAP xserver. You must configure SAP xserver as a scalable data service.

For conceptual information about failover data services and scalable data services, see the Sun Cluster Concepts Guide for Solaris OS.

Each component of MaxDB has data service that protects the component when the component is configured in Sun Cluster. See the following table.

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Note –

The files that are associated with the SUNW.sap_xserver resource type are supplied with the Sun Cluster HA for SAP liveCache data service. The Sun Cluster HA for SAP liveCache data service is installed when you install Sun Cluster HA for MaxDB data service.

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Table 1 Protection of MaxDB Components by Sun Cluster Data Services

MaxDB Component	Data Service
MaxDB	Sun Cluster HA for MaxDB  The resource type is SUNW.sapdb.
SAP xserver	Sun Cluster HA for SAP liveCache  The resource type is SUNW.sap_xserver.
NFS file system	Sun Cluster HA for NFS  The resource type is SUNW.nfs. For more information about this data service, see Sun Cluster Data Service for NFS Guide for Solaris OS.