Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

cmrecovercl: Completed recovery process for each recovery group. Recovery
packages have been started. Use cmviewcl or check package log file to
verify that the recovery packages are successfully started.
These message prompts can be disabled by running cmrecovercl with option -y.
If you have configured the Oracle RAC instance package such that there is one instance for every
package, the instance or recovery group can be recovered individually. If you have configured
all instances as a single multi-node package (MNP), recovering the recovery group of this package
starts all instances.
NOTE: At the recovery time, Continentalclusters is responsible for recovering the Oracle RAC
instance packages configured. The data integrity and currency at the recovery site are based on
your data replication configuration in the Oracle environment.
Failback of Oracle RAC Instances After a Failover
After failover, the configured disk array at the old recovery cluster becomes the primary storage
of the database. The Oracle RAC instances are running at the recovery cluster after a successful
recovery. To failback the Oracle RAC instances to the primary cluster, follow the procedures listed
below.
Before failing back the Oracle RAC instances, make sure that the data in the original primary site
disk array is in an appropriate state. Follow the disk array specific procedures for data
resynchronization between two clusters, and the Oracle RAC failback procedures before restarting
the instance.
NOTE: Make sure the AUTO_RUN flag for all the configured Continentalclusters packages is
disabled before restarting the cluster.
1. Fix the problems that caused the primary site failure.
2. Stop the Oracle RAC instance packages running on the recovery cluster. On any node of the
recovery cluster.
# /opt/cmconcl/bin/ccrac_mgmt.ksh stop
If you have configured CVM or CFS in your environment, you need to complete the following
procedure:
a. Unmount the CFS mount points using the following command:
cfsumount <Mount Point Name>
b. Deactivate the disk groups using the following command:
cfsdgadm deactivate <Disk Group Name>
c. Deport the disk groups using the following command:
vxdg deport <Disk Group Name>
The recovery cluster is now ready to failback packages and applications to the primary
cluster.
3. Synchronize the data between the two participating clusters. Make sure that the data integrity
and the data currency are at the expected level at the primary site.
4. Verify that the primary cluster is up and running.
# cmviewcl
5. If the cluster is running with Serviceguard and Oracle CRS, make sure that CRS and the
required services, such as listener, GSD, ONS, and, VIP are up and running on all of the
instance nodes. By default, when CRS is started, these Oracle services are initiated.
124 Designing Continentalclusters