Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF

Halting the RAC database on the recovery cluster
You must halt the RAC database on the Target Disk Site so that it can be restarted at the source
disk site. Use the cmhaltpkg command to halt the RAC MNP stack on the replication Target Disk
Site node. Deport the disk groups at the replication Target Disk Site nodes using the vxdg deport
command.
Configuring an empty Site Controller package
The Site Controller package and the Site Safety Latch for the disaster tolerant RAC database are
the final two components to be configured. This section describes the procedure to configure the
Site Controller package in a Metrocluster.
To configure the Site Controller package:
1. From any node, create a Site Controller package configuration file using the dts/sc module:
# cmmakepkg -m dts/sc -m dts/mcsrdf
/etc/cmcluster/hrdb_sc/hrdb_sc.config
2. Edit the hrdb_sc.config file and specify a name for the package_name attribute:
package_name hrdb_sc
3. Edit the hrdb_sc.config file and specify the node_name parameter explicitly.
node_name SFO_1
node_name SFO_2
node_name SJC_1
node_name SJC_2
4. Edit the hrdb_sc.config file and specify the directory created in step 1 for the
dts/dts/dts_pkg_dir attribute.
dts/dts/dts_pkg_dir /etc/cmcluster/hrdb_sc
5. Specify a name for the log file. HP recommendeds that this file be located in the dts/dts/
dts_pkg_dir directory.
script_log_file /etc/cmcluster/hrdb_sc/hrdb_sc.log
6. Specify the sites without any packages. Do not specify any critical_package or
managed_package.
site san_francisco
site san_jose
7. Edit the Metrocluster with EMC SRDF attributes in hrdb_sc.config file.
8. Apply the empty Site Controller Package configuration file. Ensure there are no packages
configured using the critical_package or managed_package attributes in the Site
Controller Package configuration file.
# cmapplyconf -P /etc/cmcluster/sc/hrdb_sc.config
When the Site Controller Package configuration is applied, the corresponding Site Safety Latch is
also configured automatically in the cluster. Use the resls command to view the Site Safety Latch
resources.
# resls -q -s /dts/mcsc/hrdb_sc
The following output is displayed:
/dts/mcsc/hrdb_sc: Resource Instance
The current value of the resource is DOWN (0)
Configuring Oracle RAC database in a SADTA 115