Managing Oracle Solaris 11 Boot Environments; Advantages To Maintaining Multiple Boot Environments - Oracle SuperCluster T5-8 Owner's Manual

Tool
ssctuner

Managing Oracle Solaris 11 Boot Environments

When the Oracle Solaris OS is first installed on a system, a boot environment is created. You
can use the beadm(1M) utility to create and administer additional boot environments on your
system.
After your system is installed, create a backup of the original boot environment. If needed, you
can then boot to the backup of the original boot environment. These topics describe how to
create and manage boot environments on the system.
For more information about Oracle Solaris 11 boot environments, refer to:
http://docs.oracle.com/cd/E23824_01/html/E21801/toc.html
"Advantages to Maintaining Multiple Boot Environments" on page 147
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"Create a Boot Environment" on page 148
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"Mount to a Different Build Environment" on page 150
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"Reboot to the Original Boot Environment" on page 151
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"Remove Unwanted Boot Environments" on page 151
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Advantages to Maintaining Multiple Boot
Environments
Multiple boot environments reduce risk when updating or changing software because system
administrators can create backup boot environments before making any updates to the system.
If needed, they have the option of booting a backup boot environment.
The following examples show how having more than one Oracle Solaris boot environment and
managing them with the beadm utility can be useful.
You can maintain more than one boot environment on your system and perform various
■
updates on each of them as needed. For example, you can clone a boot environment by
Description
A set of scripts and configuration files that run
on SuperCluster Oracle Solaris 10 and Oracle
Solaris 11 global zones to monitor and tune various
parameters.
Managing Oracle Solaris 11 Boot Environments
Links
"Tuning the System (ssctuner)" on page 158
Maintaining the System 147