Building Disaster Recovery Serviceguard Solutions Using Metrocluster with 3PAR Remote Copy

Figure 11 Sample configuration
Multiple RAC databases can be configured using a separate Site Controller Package infrastructure
for each RAC database. Each RAC database must have its own Site Controller Package, Site Safety
Latch, RAC MNP package stack, and replication disk group in the Metrocluster. The site-specific
Oracle Clusterware and CFS sub-clusters are common resources for all RAC databases.
To add another RAC database to an existing Metrocluster, configure two replicas of the RAC
database and the RAC MNP stack packages on both sites, and manage them using a separate
Site Controller Package.
The SADTA configuration requires two replicas of the RAC database configuration, therefore, the
Oracle Network and Services must be configured accordingly for the disaster tolerant database
clients to automatically reconnect to the new active site after a site failover is complete. For more
information on configuring access for Oracle RAC database, see “Configuring client access for
Oracle database 10gR2 RAC” (page 93).
Configuring Oracle RAC database in a SADTA
This section describes the procedure to configure Oracle RAC database in a SADTA. The subsequent
sections describe the configuration procedures using Oracle Database 10gR2 RAC as an example.
Setting up SADTA
This section summarizes the procedures required to configure Oracle RAC database in a SADTA.
To set up SADTA in your environment:
1. Set up replication using 3PAR Remote Copy in your environment.
2. Install software for configuring Metrocluster
a. Create Serviceguard Clusters
b. Configure Cluster File System-Multi-node Package (SMNP)
3. Install Oracle:
a. Install and configure Oracle Clusterware.
b. Install and configure Oracle Real Application Clusters (RAC).
c. Create RAC databases.
d. Create identical RAC databases at the remote site.
4. Configure the Site Controller Package and the Site Safety Latch.
Pre-requisites for configuring SADTA
To configure SADTA in your environment:
1. Install Serviceguard.
The Serviceguard version must be compatible with the version of HP-UX installed.
Configuring Oracle RAC database in a SADTA 75