Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Continental Cluster
Support for Oracle 9i RAC Instances in a ContinentialClusters Environment
Chapter 5278
the number of RAC instances configured to run on that cluster. It is
recommended that the same number of Oracle 9i RAC instances are
configured on both primary and recovery clusters.
The AUTO_RUN parameter in the package configuration file needs
to be set to “NO” similar to other applications packages running in
the ContinentalClusters environment.
5. Setup XP/CA environment file. Instead of one XP/CA
environment file per ContinentalCluster application package there is
only one XP/CA environment file for each set of Oracle 9i RAC
instances accessing the same database. This file can be located
anywhere except the directory where the Oracle 9i RAC instance
package configuration and control files reside. The setup of the file is
the same as what is described in section, “Physical Data Replication
using Special Environment files” on page 196 of this chapter, except
the FENCE and PKGDIR variable.
It is recommended that you use fence level “data” for synchronous
mode and fence level “async” for asynchronous mode in using XP/CA
with an Oracle database. The value of PKGDIR variable should be
the directory where this environment file resides.
For specific information on how to setup the environment file refer to
Chapter 6, “Physical Data Replication for ContinentalClusters Using
Continuous Access XP” under section “Configuring Packages for
Automatic Disaster Recovery.”
The environment file needs to be set up on all the nodes of both the
primary and recovery clusters.
6. Setup ContinentalClusters Oracle 9i RAC Specification File.
The existence of file /etc/cmconcl/ccrac/ccrac.config serves as
an enabler for ContinentalClusters Oracle 9i RAC support. A
template of this file is shipped with the product in
/opt/cmconcl/scripts. This file needs to be edited to fit your
environment. After editing, this file needs to be moved to
/etc/cmconcl/ccrac/ccrac.config on all the nodes of both
primary and recovery clusters. To set up the file use the following
steps:
a. Login as root on one node of the primary cluster.
b. Change to your own directory:
# cd <your own directory>