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In this lesson, we're going to
be taking a look at the Oracle
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Universal Installer, or OUI.
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So historically, Oracle
was installed differently
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on different platforms.
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So if you installed
Oracle on Windows,
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you had a certain setup
routine that you went through.
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If you did an installation
on Unix or Linux,
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that process was
completely different--
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maybe very text-oriented
type of installation,
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with lots of options, lots
of things for the database
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administrator to do,
to understand, or know.
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But in Oracle version 8I, Oracle
unveiled the Oracle Universal
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Installer, the OUI.
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The OUI is a Java-based
program that's
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designed to standardize
installations of Oracle
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Database across every platform.
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So any platform
that can run Java
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can run the Oracle
Universal Installer.
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And there aren't any
dependencies with Java
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on the machine itself since
the Oracle installation
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package contains its own
Java-based virtual machine.
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The Oracle Universal
Installer makes it very easy
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to install an Oracle database.
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It's very wizard-oriented.
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It asks simple questions,
dropdowns, checkboxes,
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those kinds of things
in order for us
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to configure our installation.
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But it's also flexible.
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It has the option to do
what's called a silent install
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that we'll look at.
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The silent install lets you do
an installation without running
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through the GUI.
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So GUI-oriented,
wizard-oriented,
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and easy-to-use.
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So when we download the
Oracle zip files for an Oracle
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installation of the database,
we unzip the package,
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and it unzips to a folder
simply called Database.
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So both of these zip files
will unzip into this folder.
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Inside that folder-- this
is on the Windows platform--
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it has a setup.exe file that
we double-click and run.
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And that will start the
Oracle Universal Installer.
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It's worth noting that this file
is different on Unix and Linux
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platforms.
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Since Unix and Linux don't
use executable files like
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.exe's in the same
way as Windows does,
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there's actually a file
called Run Installer.
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So we'll run that on the
Unix and Linux platforms.
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And this is just a quick
example of the startup screen
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we'll see--
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something that's GUI,
has a wizard approach,
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has various steps through it.
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When we use the Oracle
Universal Installer,
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we need to be aware of some
directories that are involved,
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or that support the OUI.
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The main one is the
Oracle Inventory.
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So the Oracle Inventory is a
location for Oracle-specific
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installation files.
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Installation logs, error
reports during the installation
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will be found in the
Oracle inventory.
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And it does a very good
job of logging and taking
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output of everything that
happens during the installer.
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If you have issues
during the install,
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you can use these logs,
diagnostics, error reports,
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those kind of things,
package them up and send them
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to Oracle Support for
them to be able to help
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you determine what the problems
with your installation were.
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The other thing we need to
establish with the Oracle
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Universal Installer
are directories.
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And this is where the Optimal
Flexible Architecture, or OFA,
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comes in.
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The OFA is a directory standard
for software and database
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directories.
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So when we do an installation
of Oracle-- and later,
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when we do a creation
of the database
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after the software's
installed-- we obviously
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need to have directories on the
disk that store all of this.
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And for years, DBAs were kind
of doing these installations
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however they wanted to,
whatever their preference was.
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And so several years
ago, Oracle came out
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with the Optimal
Flexible Architecture,
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and it's a set of
rules that says
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this is the way you
lay out your directory
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structures for an installation.
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And this is, again, to
make a standardization
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for how to put this on disk.
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It also did another thing, and
that was separate disk I/O.
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So it was designed to be able
to separate, for instance,
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data from indexes.
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Because of the way
that processing
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occurs when a table
is queried, there's
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some benefit to having a
separation between the tables
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and the indexes, for instance.
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So it was designed
to do that as well.
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It is OS-dependent, obviously,
because file systems
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on Windows and Linux
or Unix are different.
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Linux doesn't use a C:/
nomenclature in order
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to designate file
systems and directories,
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whereas Windows does.
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Another feature of the OUI
is the silent installation.
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So let's say that
we have a server--
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a single server-- and we want to
install Oracle software on it.
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It's obviously easy to run
through the GUI installer.
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But what if we have 100
installations of Oracle?
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The OUI allows us to do a
silent installation that
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utilizes text response files--
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for instance, the
db_install.rsp.
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So all this is a text file that
includes all of the commands
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that we would give to
the Universal Installer
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through the GUI, and it just
has those in a text file
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so the Oracle Universal
Installer knows
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all of the options to select
and how to install the software.
9144
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