Architecture considerations and best practices for architecting an Oracle RAC solution with Serviceguard and SGeRAC

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Figure 2 shows an example of SGeRAC cluster
Figure 2: SGeRAC Cluster
SGeRAC Toolkit
The SGeRAC Toolkit provides documentation and scripts to simplify the integration of SGeRAC and
the Oracle RAC stack, including facilitating easy configuration of cluster interconnect monitoring.
Further information about the SGeRAC Toolkit is available later in this document.
Oracle RAC
Starting with the 10g release, Oracle includes its own clusterware software with the database
products. In 10gR1, this clusterware is known as Cluster Ready Services (CRS) and is included with
Oracle RAC software. CRS is required for 10g or later RAC databases.
In 10gR2, Oracle started using the term Oracle Clusterware to describe its clusterware.
There are three components in Oracle Clusterware: Cluster Synchronization Services (CSS), Cluster
Ready Services (CRS), and Event Management (EVM).
Cache Fusion
(Ethernet or IPoIB)
Node A
Storage links
Storage links
RAC
SAN
RAC
Node B
RAC
Node C
NOTE: Cluster heartbeat and
Cache Fusion can share the
same network