HP Serviceguard Oracle DataGuard Toolkit User Guide, April 2011

Figure 2 RAC environment
In Figure 2 (page 9), the primary site contains the production database using Oracle RAC and
the symmetric secondary site maintaining physical standby using ODG. In the event of any disaster
at the primary site, Data Guard fails over the primary production role to secondary production
database.
In an RAC environment, the ODG toolkit can be implemented as a combinational Multi Node
Package (MNP) with the SGeRAC toolkit. In SGeRAC, we need to configure two MNPs – Oracle
Clusterware MNP and RAC database instance MNP. The "OC MNP" allows SGeRAC to start/stop
Oracle Clusterware processes. The "RAC MNP" allows SGeRAC to start/stop the RAC instances
via Oracle Clusterware. The ODG toolkit has to be implemented as an MNP with the SGeRAC’s
RAC MNP. The SGeRAC’s RAC MNP will provide high availability for the Oracle database
processes. Similarly, the ODG toolkit will manage the Data Guard processes.
The ODG toolkit will support the following use-cases in an RAC environment:
1. Data Guard replication between RAC primary package and single-instance, stand-alone
standby database.
Figure 3 Data Guard replication between RAC primary package and single-instance stand-alone
standby database.
Figure 3 (page 9), shows a Data Guard configuration where the primary database is Oracle
RAC and the standby is a single-instance database instance. The RAC primary is configured
on nodes 1 and 2 of the SG cluster 1. Note that there can be more than two nodes in the
Supported configurations 9