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| Oracle Solaris Cluster Data Service for SAP liveCache Guide Oracle Solaris Cluster 4.1

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## HA for SAP liveCache Overview

Use the information in this section to understand how Oracle Solaris Cluster HA for SAP liveCache (HA for SAP liveCache) makes liveCache highly available.

For conceptual information on scalable services, see the Oracle Solaris Cluster Concepts Guide.

To eliminate a single point of failure in an SAP Advanced Planner & Optimizer (APO) System, HA for SAP liveCache provides fault monitoring and automatic failover for liveCache and fault monitoring and automatic restart for SAP xserver. The following table lists the data services that best protect SAP Supply Chain Management (SCM) components in an Oracle Solaris Cluster configuration. Figure 1-1 also illustrates the data services that best protect SAP SCM components in an Oracle Solaris Cluster configuration.

Table 1-1 Protection of liveCache Components

liveCache Component | Protected by
--- | ---
SAP APO Central Instance | Oracle Solaris Cluster HA for SAP NetWeaver The resource type is `ORCL.sapdia`. For more information on this data service, see Oracle Solaris Cluster Data Service for SAP NetWeaver Guide.
SAP APO database | All highly available databases that are supported with Oracle Solaris Cluster software and by SAP.
SAP APO Application Server | Oracle Solaris Cluster HA for SAP NetWeaver The resource type is `ORCL.sapdia`. For more information on this data service, see Oracle Solaris Cluster Data Service for SAP NetWeaver Guide.
SAP xserver | HA for SAP liveCache The resource type is `SUNW.sap_xserver`.
SAP liveCache database | HA for SAP liveCache The resource type is `SUNW.sap_livecache`.
NFS file system | Oracle Solaris Cluster HA for NFS The resource type is `SUNW.nfs`. For more information on this data service, see Oracle Solaris Cluster Data Service for Network File System (NFS) Guide.

Figure 1-1 Protection of liveCache Components

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