It is only during the root.sh script execution time that the majority of Clusterware
actions (configuration) are performed.Hence, the error-free completion of the script
on all nodes of a cluster is the key factor for a successful cluster configuration.
Typically, the script is likely to go through the following list of actions when the
root.sh is executed on the first node:
• Sets the Oracle base and home environments
• Creates the /etc/oratab file
• Verifies the super user privileges
• Creates a trace directory
• Generates OCR keys for the root user
• Adds daemon information to the inittab file
• Starts up the Oracle High Availability Service Daemon (OHASD) process
• Creates and configures an ASM instance and starts up the instance
• Creates required ASM disk groups, if ASM is being used to put OCR and
voting files
• Accumulates OCR keys for the root user
• Starts up the Cluster Ready Service Daemon (CRSD) process
• Creates the voting disk file
• Puts the voting disk on the Voting disk, if ASM type is selected
• Displays voting disk details
• Stops and restarts a cluster stack and other cluster resources on the local node
• Backs up the OCR to a default location
• Installs the cvuqdisk-1.0.7-1 package
• Updates the Oracle inventory file
• Completes with the UpdateNodeList success operation
When root.sh is executed on the last node of the cluster, the following set of actions
is likely to be performed by the script:
• Sets Oracle base and home environmental variables
• The /etc/oratab file will be created
• Performs the super user privileges verification
• Adds trace directories
• Generates OCR keys for the root user
• Adds a daemon to inittab
• Starts the Oracle High Availability Service Daemon (OHASD) process
• Stops/starts a cluster stack and other cluster resources on the local node
• Performs a backup of the OCR file
• Installs the cvuqdisk-1.0.7-1 package
• Updates the Oracle inventory file
• Completes with UpdateNodeList success operation
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