Figure 3 Data Guard replication between RAC primary package and single-instance stand-alone standby database.
Figure 3 (page 10), 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: There can be more than two nodes in a cluster.
In the above mentioned example, we have taken two nodes, for better understanding. The standby database is not a part of a Serviceguard cluster. It is present outside SG cluster 1. Data Guard replication takes place between the primary RAC and the standalone standby. Each instance of the primary database transmits its redo data to an instance of the standby database. The role of the standby package is to receive the redo logs from the RAC primary and apply them to the database. In this case, high availability is not provided for the standby. In case the standby package fails, data replication stops.
The RAC primary database is configured by combining the ODG toolkit and SGeRAc toolkit in a single package. The RAC primary package fails only when all the primary database instances fail.
2.Data Guard replication between RAC primary package and single-instance standby package.
10 Serviceguard toolkit for Oracle Data Guard