HP Serviceguard Toolkits for Database Replication Solutions User Guide, March 2012

ODG toolkit configurations has the following benefits:
• High availability for primary/secondary databases
• Automation of start/stop of databases
BenefitsOracle Data Guard toolkit configuration in
It uses only one Serviceguard cluster. It stretches a Serviceguard
cluster across data centers up to 100 km apart and provides
protection against site outages.
Extended Distance Cluster environment
It provides push button automated role takeover of the ODG
database.
Continentalclusters environment
ODG databases can be configured for failover across two data
centers (which are up to 300 km apart) of the Metrocluster.
Metrocluster environment
It provides data consistency of synchronous replication . It
protects against local and wide area disasters.
Three Data Center configuration
NOTE: These configurations are applicable both in single-instance and RAC environment.
High availability for data guard broker
High availability for Data Guard Broker is supported only on RAC and not on single-instance
database because Oracle does not support high availability for Data Guard Broker with vendor
clusterware for single-instance Oracle database.
If the value of MONITOR_DG_BROKER attribute is set to [yes] and the ODG toolkit is used in
combination with the SGeRAC toolkit, the ODG toolkit starts the broker and monitors the DMON
process. DMON is an Oracle background process that runs for every database instance that is
managed by the broker. When you start the Data Guard broker, a DMON process is created.
HP recommends that you disable the “Fast Start Failover ” feature, while using the ODG toolkit
with ODG Broker in a Continentalclusters environment.
NOTE:
• If the broker process (DMON) fails, then the ODG toolkit does not failover the package. After
trying to restart it twice, a message is logged in the package log file to notify the user about
the failure of the Broker process.
• If MONITOR_DG_BROKER is set to [yes], the toolkit does not monitor the mrp (or lsp) process
on physical standby database (or logical standby database).
Setting up Oracle Data Guard toolkit
Perform the following tasks to set up the ODG toolkit:
1. Install the ODG toolkit
2. Configure the ODG toolkit
3. Add the package to the Serviceguard cluster
In this User guide, it is considered that:
1. Oracle is installed on all the nodes of the cluster.
2. Oracle Data Guard databases (primary and standby) are configured.
3. Storage is already configured.
For information on configuring ODG, see the Oracle website http://www.oracle.com.
Setting up Oracle Data Guard toolkit 19