Installing SF Oracle RAC on an alternate root enables you to boot from the second disk instead of the default disk. Installing on an alternate root also enables you to upgrade the OS on a Solaris system without affecting the existing configuration or requiring much downtime. Using an alternate root is required when using Live Upgrade to upgrade to SF Oracle RAC 6.0.1.
Figure: Installing SF Oracle RAC on an alternate root disk illustrates the installation process.
Perform the steps in the following procedure on the active root disk of each node.
To install SF Oracle RAC 6.0.1 on the alternate root disk of your system
For example, /dev/dsk/cXtXdXs2
, where cXtXdXs2 is the alternate root disk.
# mkdir /altroot # mount /dev/dsk/cXtXdXs0 /altroot
The mount point must have the same name on all systems.
# cd /dvd_mount/storage_foundation_for_oracle_rac # ./installsfrac -rootpath /altroot sys1 sys2
/altroot
.Display the current boot disk device and device aliases.
# eeprom boot-device=vx-rootdg vx-int_disk use-nvramrc?=true nvramrc=devalias vx-int_disk /pci@1c,600000/scsi@2/disk@0,0:a devalias vx-rootdg01 /pci@1c,600000/scsi@2/disk@1,0:a
Set the device from which to boot using the eeprom command. This example shows booting from the alternate root disk.
# eeprom boot-device=/pci@780/pci@0/pci@9/scsi@0/disk@1
Reboot the system.
# shutdown -g0 -i6 -y
# ./installsfrac -configure sys1 sys2
For instructions, see the chapter Performing post-installation and configuration tasks in this document.