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</p><em>Oracle9<em>i</em> Database Migration</em> and <em>Oracle9<em>i</em> Database Administrator&#039;s Guide</em> for more information on compatibility and interoperability issues, and on connecting different client versions to the database.
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<h3>
<font face="arial, helvetica, sans-serif" color="#330099">
Upgrading Existing Oracle Databases
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</h3>
<p>Upgrading is the process of installing a new database server version and using the Database Upgrade Assistant or the Export&#047;Import utility to convert an existing database to the new version. Upgrade if you want to test a new installation with a copy of your old database prior to bringing it online in a production environment.
</p>
<p>Oracle8 release 8.0.6 or later databases and Oracle8<em>i</em> release 8.1.5 or later databases can be upgraded directly to Oracle9<em>i</em>. Oracle8 databases earlier than 8.0.6 must be upgraded to Oracle8 release 8.0.6, and then to Oracle9<em>i</em>. Use the Database Upgrade Assistant when upgrading your data.
</p>
<p>All Oracle8<em>i</em> versions are supported for upgrading to Oracle9<em>i</em> release 2.
</p>
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<h3>
<font face="arial, helvetica, sans-serif" color="#330099">
Upgrade Issues
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</h3>
<p>If you have an existing Oracle installation, Oracle Corporation recommends that you install Oracle9<em>i</em> 9.2.0.1.0 into a new Oracle home directory. 
</p>
<p>It is not possible to have more than one Oracle release in the same Oracle home. If you must install Oracle9<em>i</em> into an Oracle home directory that contains previously installed Oracle8<em>i</em> products, then use the Oracle Universal Installer to remove the previously installed products before beginning the new installation.
</p>
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<strong>Note:</strong>
</font>
</p>Oracle Upgrade Utility supports Oracle Real Application Clusters 9.2.0.1.0.
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<strong>See Also:</strong>
</font>
</p><em>Oracle9<em>i</em> Database Migration</em> for more information on upgrading an existing database.
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<div class="sect1"><a id="sthref90" name="sthref90"></a>
<h2>
<font face="arial, helvetica, sans-serif" color="#330099">Oracle9<em>i</em> Re-installation<a id="sthref91" name="sthref91"></a>
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</h2>
<p>If you re-install Oracle9<em>i</em> database into an Oracle home directory where an Oracle9<em>i</em> database is already installed, you must also re-install any component selections, such as Oracle Partitioning, that were enabled before you began the re-installation.
</p>
</div class="sect1"><a id="i1102865" name="i1102865"></a>
<div class="sect1"><a id="sthref92" name="sthref92"></a>
<h2>
<font face="arial, helvetica, sans-serif" color="#330099">Oracle9<em>i</em> Installation Restrictions
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</h2>
<p>There are restrictions that can affect the installation or use of Oracle9<em>i</em> software on UNIX platforms. For the latest information on these restrictions, refer to the release notes and the <code>README</code> files that accompany this release. For documentation, access the <code>index.htm</code> file from Disk 1 of the CD-ROM. 
</p>
<p>Release Notes are updated regularly online and are available with the rest of the Oracle documentation at the following location:
</p>
<pre><a href="http://docs.oracle.com">http:&#047;&#047;docs.oracle.com</a>

</pre><a id="i1102867" name="i1102867"></a>
<p>In addition, if you have hardware or operating system software versions that are released after this installation guide and you are an Oracle Support Services customer, then review the certification matrix on Oracle<em>MetaLink</em> to determine if Oracle9<em>i</em> 9.2.0.1.0 is certified for these products or versions. 
</p>
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<strong>See Also:</strong>
</font>
</p><a href="pref.htm#i969598">"Oracle Services and Support"</a> for more information on Oracle<em>MetaLink</em>.
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<div class="sect2"><a id="sthref93" name="sthref93"></a>
<h3>
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<a id="sthref94" name="sthref94"></a>Installing in Character Mode
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</h3>
<p>You cannot perform an Oracle9<em>i</em> installation using character mode. You can, however, configure the Oracle Universal Installer to perform a non-interactive<a id="sthref95" name="sthref95"></a><a id="sthref96" name="sthref96"></a> ("silent") installation. Non-interactive mode can be run directly from an X Window System console, or through an X terminal or PC X terminal on a remote system. 
</p>
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<strong>Note:</strong>
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</p>Whenever you perform a non-interactive installation, you must set your DISPLAY environment variable. Otherwise, installation will fail.
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<strong>See Also:</strong>
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</p>"Non-Interactive Installation and Configuration" on page&#160;3&#045;37 for more information on the non-interactive installation of Oracle products.
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<h3>
<font face="arial, helvetica, sans-serif" color="#330099">
Writing To File Systems
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</h3>
<p>Oracle9<em>i</em> Server must be able to verify that writes to a disk were completed successfully. NFS file systems may not be able to guarantee that writes to a disk were completed successfully, and this may lead to possible data file corruption. Oracle Corporation recommends that you do not have data files located on NFS mount points unless your storage vendor and storage device are listed in the Oracle Storage Compatibility Program list. This list can be accessed from the following Web site:
</p>
<pre><a href="http://www.oracle.com/ip/deploy/database/storage/"><code>http:&#047;&#047;www.oracle.com&#047;ip&#047;deploy&#047;database&#047;storage&#047;</code></a>
</pre>
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<div class="sect2"><a id="sthref98" name="sthref98"></a>
<h3>
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Using Hummingbird Exceed X Window Emulator <a id="sthref99" name="sthref99"></a><a id="sthref100" name="sthref100"></a>
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</h3>
<p>An X Window emulator is a software package that emulates the X Window System, which is a network-based graphics window system that is the industry standard windowing system for UNIX systems. If you intend to install Oracle9<em>i</em> on a server from a client terminal whose operating system is a non-UNIX system, such as Microsoft Windows, then you must obtain an X Window emulator.
</p>
<p>If you use the Hummingbird Exceed X Window emulator while installing and using Oracle9<em>i</em>, then set the window manager to run in Native mode so that Microsoft Windows functions as the window manager. See your Exceed documentation for instructions on configuring the window manager.
</p>
<p>The following are common problems with the Hummingbird Exceed X Window emulator:
</p>
<ul>
<li type="disc">
<p>Exceed does not handle screen coordinates correctly. The <em>Installer</em> window and related Installer dialogs and configuration assistants can encounter display problems when run through the emulator. If Exceed causes display problems, then exit the entire X Window session and start a new session.
</p>
</li>
<li type="disc">
<p>For some dialog windows the text fields appear truncated when viewed through Exceed and display correctly when viewed through a native X Window on a UNIX system.
</p>
<p>To correct any problems with hidden dialog fields, perform the following steps:
</p>
<ol type="1" start="1">
<li>
<p>Select the xconfig application under the Exceed Program Group from the Windows Start Menu.
</p>
</li>
<li>
<p>Select the Fonts applet.
</p>
</li>
<li>
<p>Select the Font Database button in the <em>Font Settings</em> dialog.
</p>
</li>
<li>
<p>Deselect the Automatic Font Substitution option in the <em>Font Database</em> dialog.
</p>
</li>
<li>
<p>Select the Add&#133; button. 
</p>
<p>The <em>Add Font Directory</em> dialog is displayed. 
</p>
</li>
<li>
<p>Select the Server radio button in the <em>Add Font Directory</em> dialog.
</p>
</li>
<li>
<p>Enter the host name for your machine in the Host Name field in the A<em>dd Font Server </em>dialog. 
</p>
</li>
<li>
<p>Leave all other entries at their default settings.
</p>
</li>
<li>
<p>Select OK.
</p>
</li>
<li>
<p>Select Close on all dialogs to save the settings.
</p>
</li>
</ol>
</li>
</ul>
</div class="sect2">
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