Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF

Figure 24 Sample Oracle RAC Database with ASM in SADTA
Site safety
latch
SiteA_hrdb_dg
Site A
Node 1
Disk Array
Node 2
Router Router
Node 3 Node 4
Site B
Disk Array
SiteA CRS
SiteA RAC DB pkg
Site Controller
SiteB CRS
SiteB RAC DB pkg
SiteB ASM DG pkgSiteA ASM DG pkg
RAC DB Disk
CRS, OCR, &
Voting
CRS, OCR, &
Voting
RAC DB Disk
Active Inactive
The Oracle Clusterware software must be installed at every 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 every 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 every 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 every 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 EMC SRDF replication. 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
every 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:
1. Set up replication.
2. Configure Metrocluster with sites.
120 Configuring Oracle RAC in SADTA