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

SADTA to configure Oracle RAC. When using SADTA, you must use the Site Controller Package
instead of the /etc/cmconcl/ccrac/ccrac.config file to configure Oracle RAC.
CAUTION: Until the migration is complete, do not perform any administrative operations in the
Continentalclusters for this Oracle RAC database recovery group.
Complete the following procedure to convert an existing Oracle RAC configuration to use SADTA
in Continentalclusters:
1. Halt the primary cluster using the cmhaltcl command.
2. Define a single site in primary cluster.
For more information on defining sites in the cluster configuration, see section “Configuring
the Primary and Recovery Cluster with a Single Site” (page 140).
3. Start the primary cluster using the cmruncl command.
4. Create a Site Controller Package in the primary cluster. For more information on creating the
Site Controller Package, see “Configuring the Site Controller Package in the Primary Cluster”
(page 134).
5. Halt the RAC database stack in the primary cluster using the cmhaltpkg command.
6. Configure the Site Safety Latch dependencies. For more information on configuring the Site
Safety Latch dependencies, see “Configuring the Site Safety Latch Dependencies for a Complex
Workload” (page 357).
7. Start the Site Controller package in the primary cluster.
8. Halt the recovery cluster using the cmhaltcl command.
9. Define a single site in the recovery cluster. For more information on defining sites in the cluster
configuration, see “Configuring the Primary and Recovery Cluster with a Single Site” (page 140).
10. Start the recovery cluster using the cmruncl command.
11. Configure the Site Controller Package in the recovery cluster. For more information on
configuring the Site Controller Package, see “Configuring the Site Controller Package in the
Recovery Cluster” (page 458).
12. Configure the Site Safety Latch dependencies. For more information on configuring the Site
Safety Latch dependencies, see “Configuring the Site Safety Latch Dependencies for a Complex
Workload” (page 357).
13. In the Continentalclusters configuration file, replace the RAC database package names that
are configured as primary and recovery package in the recovery group with the Site Controller
Package names that are in the primary and recovery cluster.
For example:
RECOVERY_GROUP_NAME <recovery_group_name>
PRIMARY_PACKAGE <primary_cluster_name>/<Site_Controller_Package_name>
RECOVERY_PACKAGE <recovery_cluster_name>/<Site_Controller_Package_name>
14. Apply the modified Continentalclusters configuration file.
15. Edit the file /etc/cmconcl/ccrac/ccrac.config to remove the entries for this RAC
database.
16. Re-distribute the updated /etc/cmconcl/ccrac/ccrac.config file to all nodes.
Configuring the Primary and Recovery Cluster with a Single Site
The primary cluster and recovery cluster must be created with a single site configured in the
Serviceguard cluster configuration file.
Complete the following steps to create a Serviceguard cluster with a single site configured:
1. Run the cmquerycl command to create a cluster configuration from any node.
2. Edit the created cluster configuration file to specify a site configuration.
Following is a sample configuration file:
140 Designing Continentalclusters