Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

Scheduling a fire drill

You can schedule the fire drill for the service group using the fdsched script. The

fdsched script is designed to run only on the lowest numbered node that is

currently running in the cluster. The scheduler runs the command hagrp -

online firedrill_group -any at periodic intervals.

To schedule a fire drill

Add the file /opt/VRTSvcs/bin/fdsched to your crontab.

To make fire drills highly available, add the fdsched file to each node in the

cluster.

Sample fire drill service group configuration

The sample configuration file, /etc/VRTSvcs/conf/sample_rac/sfrac15_main.cf,

describes a fire drill service group configuration on the secondary site. The

configuration uses VVR for replicating data between the sites.

This sample file describes the following configuration:

■ Two SF Oracle RAC clusters, comprising two nodes each, hosted at different

geographical locations.

■ A single Oracle database that is stored on CFS.

■ The database is managed by the VCS agent for Oracle.

The agent starts, stops, and monitors the database.

■ The database uses the Oracle UDP IPC for database cache fusion.

■ A common IP address is used by Oracle Clusterware and database cache fusion.

The private IP address is managed by the PrivNIC agent for high availability.

■ One virtual IP address must be configured under the ClusterService group

on each site for inter-cluster communication.

■ The Oracle Cluster Registry (OCR) and voting disk are stored on CFS.

■ Veritas Volume Replicator (VVR) is used to replicate data between the sites.

■ The shared volumes replicated across the sites are configured under the RVG

group.

■ The replication link used by VVR for communicating log information between

sites are configured under the rlogowner group. This is a failover group that

will be online on only one of the nodes in the cluster at each site.

■ The database group is configured as a global group by specifying the clusters

on the primary and secondary sites as values for the ClusterList group attribute.

Administering SF Oracle RAC and its components

Administering SF Oracle RAC global clusters

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