222 lines
14 KiB
HTML
222 lines
14 KiB
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<meta name="DC.Title" content="Effects of system value settings on restore operations" />
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<meta name="abstract" content="Describes how to requiredly set the restore system values so they are compatible during a restore operation. This topic also describes how the three restore system values work together when a restore is performed." />
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<meta name="description" content="Describes how to requiredly set the restore system values so they are compatible during a restore operation. This topic also describes how the three restore system values work together when a restore is performed." />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Effects of system value settings on restore operations</title>
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</head>
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<body id="rzakzrestoreoperation"><a name="rzakzrestoreoperation"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Effects of system value settings on restore operations</h1>
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<div><p>Describes how to requiredly set the restore system values so they
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are compatible during a restore operation. This topic also describes how the
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three restore system values work together when a restore is performed.</p>
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<p>When preparing for a restore operation, it is important to know and understand
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how the following system values work together to restore objects.</p>
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<ul><li>Verify object signatures during restore (QVFYOBJRST)</li>
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<li>Convert objects during restore (QFRCCVNRST)</li>
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<li>Allow restore of security-sensitive objects (QALWOBJRST)</li>
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</ul>
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<p>When an attempt is made to restore an object onto the system, these three
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system values work together as filters to determine if the object is allowed
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to be restored, or if it is converted during the restore. The first filter
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is the Verify object on restore (QVFYOBJRST) system value. It is used to control
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the restore of some objects that can be digitally signed. The second filter
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is the Convert objects during restore (QFRCCVNRST) system value. This system
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value allows you to specify whether or not to convert programs, service programs,
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SQL packages, and module objects during the restore. It can also prevent some
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objects from being restored. Only objects that can get past the first two
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filters are processed by the third filter. The third filter is the Allow restore
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of security-sensitive objects (QALWOBJRST) system value. It specifies whether
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or not objects with security-sensitive attributes can be restored.</p>
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<p>When a restore operation is performed, you must set the <span class="uicontrol">Force
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object conversion</span> (FRCOBJCVN) parameter and the <span class="uicontrol">Convert
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objects during restore</span> system value to compatible settings. Otherwise,
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you will receive an error message and the restore will fail. The following
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table identifies which settings are compatible and which ones will fail.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" id="d0e59">FRCOBJCVN parameter</th>
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<th valign="top" id="d0e61">QFRCCVNRST system value </th>
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<th valign="top" id="d0e63">Outcome of restore command </th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e59 ">*SYSVAL</td>
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<td valign="top" headers="d0e61 ">0,1,2,3,4,5,6, or 7</td>
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<td valign="top" headers="d0e63 ">The <span class="uicontrol">Convert objects during restore</span> (QFRCCVNRST)
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system value is used.</td>
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</tr>
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<tr><td valign="top" headers="d0e59 ">*NO</td>
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<td valign="top" headers="d0e61 ">0</td>
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<td valign="top" headers="d0e63 ">No objects are converted and everything is restored without conversion.</td>
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</tr>
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<tr><td valign="top" headers="d0e59 ">*NO</td>
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<td valign="top" headers="d0e61 ">1</td>
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<td valign="top" headers="d0e63 ">Only objects with validation errors are converted and everything else
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is restored without conversion.</td>
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</tr>
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<tr><td valign="top" headers="d0e59 ">*NO</td>
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<td valign="top" headers="d0e61 ">2-7</td>
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<td valign="top" headers="d0e63 ">Not compatible. An error message is sent to the system administrator
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and nothing is restored and nothing is converted.</td>
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</tr>
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<tr><td valign="top" headers="d0e59 ">*YES *RQD</td>
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<td valign="top" headers="d0e61 ">0, 1 or 2</td>
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<td valign="top" headers="d0e63 ">Only objects with validation errors or objects that require conversion
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to be used on the current release are converted.</td>
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</tr>
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<tr><td valign="top" headers="d0e59 ">*YES *RQD</td>
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<td valign="top" headers="d0e61 ">3-7</td>
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<td valign="top" headers="d0e63 ">Not compatible. An error message is sent to the system administrator
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and nothing is restored and nothing is converted.</td>
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</tr>
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<tr><td valign="top" headers="d0e59 ">*YES *ALL</td>
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<td valign="top" headers="d0e61 ">0, 1, 2, 3, 4, 5, 6 or 7</td>
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<td valign="top" headers="d0e63 ">FRCOBJCVN (*YES *ALL) overrides any QFRCCVNRST value and all objects
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are converted and restored if they are successfully converted.</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>In order for an object to be restored successfully, it must pass the three
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system values that work together during a restore operation: <span class="uicontrol">Verify
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object signatures during restore</span> (QVFYOBJRST), <span class="uicontrol">Force
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conversion on restore</span> (QFRCCVNRST) and <span class="uicontrol">Allow restore
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of security-sensitive objects</span> (QALWOBJRST). However, if the <span class="uicontrol">Force
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object conversion</span> (FRCOBJCVN) parameter and <span class="uicontrol">Force conversion
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on restore</span> (QFRCCVNRST) system value are not compatible, no conversion
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will occur and nothing is restored.</p>
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<div class="section"><h4 class="sectiontitle">Force object conversion (FRCOBJCVN)</h4><p>The following
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are possible values for the <span class="uicontrol">Force object conversion</span> (FRCOBJCVN)
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parameter:</p>
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<ul><li><span class="uicontrol">*SYSVAL</span> <p>The objects are converted based on the
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value of the <span class="uicontrol">Force conversion on restore</span> (QFRCCVNRST)
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system value. This is the default value.</p>
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</li>
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<li><span class="uicontrol">*YES *ALL</span> <p>All objects are converted regardless
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of their current format. However, if the objects do not have the data required
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for machine translation, the objects are not restored. Conversion increases
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the time of the restore operation, but avoids the need to convert the objects
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when they are first used. This setting overrides the <span class="uicontrol">Force object
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conversion</span> system value.</p>
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</li>
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<li><span class="uicontrol">*YES *RQD</span> <p>The objects are converted only if
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they require conversion to be used by the current operating system. If the
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objects require conversion but do not have the data required for machine translation,
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the objects are not restored. Conversion increases the time of the restore
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operation, but avoids the need to convert the objects when they are first
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used.</p>
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</li>
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<li><span class="uicontrol">*NO</span> <p>No objects are converted during the restore
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operation.</p>
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</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Convert objects during restore (QFRCCVNRST)</h4><p>The
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following are possible values for the <span class="uicontrol">Convert objects during restore</span> (QFRCCVNRST)
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system value:</p>
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<ul><li><span class="uicontrol">Level 0 (0)</span> <p>Restore all objects without conversion.</p>
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</li>
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<li><span class="uicontrol">Level 1 (1)</span> <p>Objects with validation errors are
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converted.</p>
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</li>
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<li><span class="uicontrol">Level 2 (2)</span> <p>Objects that must be converted to
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be used on the current version of the operating system and objects with validation
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errors are converted.</p>
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</li>
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<li><span class="uicontrol">Level 3 (3)</span> <p>Objects that are suspected of having
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been tampered with, must be converted to be used on the current version of
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the operating system, or have validation errors are converted.</p>
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</li>
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<li><span class="uicontrol">Level 4 (4)</span> <p>Objects that contain validation
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errors, require conversion for use, or are suspected of having been tampered
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with will be converted. Objects that contain sufficient creation data and
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do not have a valid digital signature will also be converted.</p>
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</li>
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<li><span class="uicontrol">Level 5 (5)</span> <p>Objects that contain validation
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errors, require conversion for use, are suspected of having been tampered
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with, or contain sufficient creation data will be converted.</p>
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</li>
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<li><span class="uicontrol">Level 6 (6)</span> <p>Objects that contain validation
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errors, require conversion for use, are suspected of having been tampered
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with, or do not have a valid digital signature will be converted.</p>
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</li>
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<li><span class="uicontrol">Level 7 (7)</span> <p>All objects are converted.</p>
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</li>
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</ul>
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<p>For all levels, if an object meets a requirement to be converted but
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fails conversion, it will not restore. Objects that do not need to be converted
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will restore without conversion. When an object is converted, the digital
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signature of the object will be removed. Also, any object that is converted
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will be changed to user state, its validation errors will be corrected, and
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it will no longer be suspected of having been tampered with.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Where can I find more information?</h4><dl><dt class="dlterm">Restore operations</dt>
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<dd>Find information about planning, configuring, and running a restore operation
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with the required system value settings. These tasks will take you through the
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steps to prepare the system values for a restore operation. In addition, you
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will find a reference for more information because when performing a restore
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operation there are other precautions to be aware of.</dd>
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<dt class="dlterm">i5/OS™ system
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value finder</dt>
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<dd>Use this tool to find system values in iSeries™ Navigator. The i5/OS system
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value finder can be particularly helpful if you are trying to make the switch
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from the system value terms that were used in the character-based interface
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to the terms that are now used in iSeries Navigator.</dd>
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<dt class="dlterm">System values categories</dt>
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<dd>Find an introduction to all the categories of system values found in iSeries Navigator.</dd>
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</dl>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakzconcepts.htm" title="You can learn about specific system value concepts before setting your system values. Select this topic to find descriptions of how to lock and unlock system values and how system values affect a restore operation.">System value concepts</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzakzoverviewparent.htm" title="iSeries Navigator groups system values into categories to streamline system value management.">System value categories</a></div>
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<div><a href="rzakzqfrccvnrst.htm" title="Specifies which objects are converted before being restored. (QFRCCVNRST)">Save and restore system values: Convert objects during restore</a></div>
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<div><a href="rzakzqalwobjrst.htm" title="Specifies the objects to be restored and if they can be restored while installing software fixes. (QALWOBJRST)">Save and restore system values: Allow restore of security sensitive objects</a></div>
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<div><a href="rzakzqvfyobjrst.htm" title="Specifies whether objects without signatures and/or with signatures that are not valid are restored. (QVFYOBJRST)">Save and restore system values: Verify object signatures during restore</a></div>
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<div><a href="rzakzrestore.htm" title="System values play a vital role in restore operations. It is essential that you plan and configure the system values that affect a restore operation.">Prepare system values for a restore operation</a></div>
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<div><a href="rzakzrunrestore.htm" title="After you plan how you want a restore handled and configure your system values to handle the restore requiredly, you are ready to run the restore command.">Run a restore command</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="rzakzplanrestore.htm" title="Before running a restore operation, you must plan what type of restore you want to perform. Then, configure your system values to the required settings to meet your needs. Then, when a restore operation is performed, you will have the correct settings specified on your system.">Plan system values for a restore operation</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="rzakzfinder.htm">System value finder</a></div>
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</div>
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</div>
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</body>
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</html>
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