Oracle AVDF 20.7/20.8 Installation Fails Due to Package Download Error

While installing Oracle AVDF 20.7 or 20.8, the installation failed to complete the Oracle Audit Server Installation.

Problem

The installation of Oracle AVDF 20.7 or 20.8 fails with the error:

Installation failed: Failed to complete the Oracle Audit Server Installation

Cause

The following error appears in the debug logs, indicating an issue with package downloads:

localhost run-privileged-migrations[22598]:
com.oracle.dbfw.privilegedMigration DEBUG - yum: Error downloading packages:
localhost run-privileged-migrations[22598]:
com.oracle.dbfw.privilegedMigration DEBUG - yum:
avs-grid-<version>.x86_64: [Errno 256] No more mirrors to try.

This occurs when the installation ISO is unavailable during part of the installation or if network issues interrupt the download process.

Solution

To resolve the issue, follow these steps:

  1. Verify the ISO file:

    a. Ensure the ISO file is completely downloaded and accessible throughout the installation.

    b. Verify the download by checking the file size and comparing the SHA-256 checksum. Run the following command on Linux to generate the checksum:

     <pre class="text copy"><code>$ sha256sum Vpart_number.iso</code></pre>

    c. Confirm the checksum matches the value provided in the File Download dialog box.

  2. Check ISO Accessibility:

    a. After mounting the ISO to the Audit Vault Server (AVS) as root, confirm it is recognized by the system:

     <pre class="text copy"><code>ls /dev/disk/by-label</code></pre>

 Look for a label like `AVS_20_7_0_0_0`.

    b. Mount the ISO with:

     <pre class="text copy"><code>mount /dev/disk/by-label/AVS_20_7_0_0_0 /mnt</code></pre>

    c. Verify that the required package files are present:

     <pre class="text copy"><code>find /mnt -name &#39;avs-grid*&#39; -ls</code></pre>

  3. Network Stability Check:

    a. From the AV server, test the network stability with:

     <pre class="text copy"><code>cat &#39;Copy one of the files from find /mnt -name &quot;avs-grid*&quot; -ls&#39; &gt; /dev/null</code></pre>

    b. If this command is slow, network slowness may be affecting the installation. Check /var/log/messages for additional error logs.

If any issue persist, re-download the ISO file and confirm checksum accuracy before retrying the installation.