Part III
Installing Oracle Clusterware and Oracle Database 10g with Oracle Real Application Clusters,
Creating Oracle Real Application Clusters Databases,and Performing Post-Installation Tasks
Chapter 4:
Installing Oracle Clusterware
Verifying Oracle Clusterware Requirements with CVU
/mountpoint/clusterware/cluvfy/runcluvfy.sh stage -pre crsinst -n node_list
The voting disk is a partition that Oracle Clusterware uses to verify cluster node membership
and status.
The voting disk must be owned by the oracle user,must be in the dba group,
and must have permissions set to 640.Provide at least 20 MB disk space for the voting disk.
The Oracle Cluster Registry (OCR) contains cluster and database configuration information
for the RAC database and for Oracle Clusterware,including the node list,and other information
about cluster cofiguration and profiles.
The OCR disk must be owned by root,must be in the oinstall group,and must have permissions set
to 640.Provided at least 100 MB disk space for the OCR.
Oracle Clusterware Backgound Processes:
oprocd:Process monitor for the cluster.
evmd: Event manager daemon that starts the "racgevt" process to manage callouts.
ocssd:Manages cluster node membership and runs as oracle user;failure of this process
result in node restart.
crsd:Performs high availabilit recovery and management operations such as maintaining the
OCR .also manages application resources and runs as root user and restarts
automatically upno failure.
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