When you activate a protection group, the protection group assumes the role that you assigned to it during configuration. When you deactivate a protection group, its application resource groups are also unmanaged.
You can activate or deactivate a protection group in the following ways:
Globally – Activates or deactivates a protection group on both clusters where the protection group is configured.
On the primary cluster only – Secondary cluster remains inactive.
When a protection group is activated on the primary cluster, the application resource groups that are configured for the protection group are also started. The disaster recovery framework uses the following Oracle Solaris Cluster commands on the primary cluster to bring the resource groups online:
# clresourcegroup online -eM resource-group-list
On the secondary cluster only – Primary cluster remains inactive.
When you activate a protection group, the data replication product that you are using determines the clusters on which data replication can start. The following sections describe additional behaviors when you activate or deactivate a particular data replication product:
The Oracle Data Guard software allows data replication to start only if you activate a protection group in one of the following ways:
Locally from the primary cluster.
Globally from either the primary or the standby cluster.
So, if you attempt to activate an Oracle Data Guard protection group locally from the standby cluster, data replication does not start. However, if you activate the protection group globally from the standby cluster, data replication does start.