Figure 62 Sample Oracle RAC Database with ASM in SADTA

The Oracle Clusterware software must be installed at each site in the Metrocluster. The CRS daemons at the sub-clusters must be configured as a Serviceguard package using the HP Serviceguard extension for RAC (SGeRAC) toolkit at each site. The CRS Home must be installed on a file system that is local to a site. The CRS voting and OCR disks must not be configured for replication.

The RAC database software must be installed at each site in the Metrocluster. Create ASM disk groups at the nodes in the source site of replication and configure an identical ASM disk groups on the nodes in the other site. The ASM disk group (ASM DG) must be configured as a Serviceguard package using the SGeRAC toolkit at each site. The ASM DG package must have dependency on the CRS package on the site.

Two replicas of the RAC database must be configured; one at source site of the replication and the other at the destination site of the replication. The database must be created at the nodes in source site of the replication and database data must be replicated to the nodes in the other site using Continuous Access XP or Continuous Access EVA or EMC SRDF replication based on the array used in your environment. An identical RAC database configuration must be created at the nodes in other site,The RAC database (RAC DB) must be configured using the SGeRAC toolkit at each site. The RAC DB package must have dependency on the CRS package and ASM DG packages on the site.

This section describes the procedures that must be followed to configure SADTA with Oracle RAC database with ASM. To explain these procedures, it is assumed that the Oracle RAC home directory is /opt/app/oracle/product/11.1.0/db_1/dbs and the database name is hrdb.

To configure SADTA with Oracle RAC database with ASM, complete the following steps:

1.Set up replication.

2.Configure Metrocluster with sites.

3.Install and configure Oracle Clusterware.

4.Install Oracle Real Application Clusters (RAC) software.

5.Create the RAC database with ASM:

a.Configure ASM disk group.

b.Configure SGeRAC Toolkit Packages for the ASM disk group.

c.Create the RAC database using the Oracle Database Configuration Assistant.

384 Designing a Disaster Recovery Solution Using Site Aware Disaster Tolerant Architecture