Promoting a Georedundant CMP Cluster

Prior to performing this procedure, you must demote the primary active cluster. See Demoting a Georedundant CMP Cluster for detailed information.

In a two-cluster CMP topology and after demoting the primary cluster, you can promote the secondary cluster (which is typically the Site 2 cluster) to primary active status. You would do this, for example, prior to performing site-wide maintenance that affects service (such as replacing a server) or if the primary cluster has failed completely and is unreachable.

Note: This is a manual process.

When you promote a CMP cluster, the secondary site (which is typically the Site 2 cluster) becomes the primary site. This status will persist until you manually demote the new primary site or the primary site fails over for some reason.

CAUTION: Demote the primary CMP cluster before promoting another CMP cluster to avoid having both georedundant clusters active at the same time. Continuous and rapid failovers (flopping back and forth) between georedundant clusters is not recommended and should be avoided. Improper cluster failover can result in loss of data or interruption of network services on the CMP cluster.

To promote a georedundant CMP cluster:

Log in to the secondary CMP cluster:
The page displays a message indicating that you are signed into Secondary Active server.
Note: The state of the servers of the primary cluster is not available to the secondary active server and appears as Out-of-Service.
1. From the Platform Setting section of the navigation pane, select Topology Settings.
  The Cluster Configuration page opens; the initial group is All Clusters.
2. From the content tree, select All Clusters.
  The Cluster Configuration page opens.
  Note: The name of the primary CMP cluster is marked with (P), and the name of the secondary cluster is marked with (S).
  For the secondary cluster, you should see the operations View and Promote.
  
  CAUTION: If you do not see the same information in this step as you did in 2, stop this procedure and do not try to change the current active georedundant cluster. Contact My Oracle Support before proceeding.
If you have just demoted a primary cluster, wait 2 minutes.
In the Cluster Settings table, in the row listing the secondary CMP cluster, click Promote.
A confirmation message appears.
Click OK.
Log out of the CMP system for the cluster you have just promoted.
Log in to the CMP system for the cluster you have just promoted.
From the Platform Setting section of the navigation pane, select Topology Settings.
The Cluster Configuration page opens; the initial group is All Clusters.
From the content tree, select All Clusters.
The Cluster Configuration page opens.
The newly promoted primary cluster is marked with (P), and the name of the demoted secondary cluster is marked with (S). The old primary cluster may briefly display as off-line.
Note: For the new primary cluster, you should see the operations View and Demote. All functions available for the primary CMP cluster should now appear and be accessible.
Wait 10 minutes.
From the Platform Setting section of the navigation pane, select Topology Settings.
The Cluster Configuration page opens; the initial group is All Clusters.
From the content tree, select All Clusters.
The Cluster Configuration page opens.
Verify that both the primary and secondary CMP clusters are available and have the correct status.

The secondary CMP cluster is promoted to primary status.