56 lines
3.5 KiB
HTML
56 lines
3.5 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Damage tolerance" />
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<meta name="abstract" content="The server provides several mechanisms to reduce or eliminate damage caused by disk errors." />
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<meta name="description" content="The server provides several mechanisms to reduce or eliminate damage caused by disk errors." />
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<meta name="DC.subject" content="damage tolerance, data integrity, damage tolerance" />
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<meta name="keywords" content="damage tolerance, data integrity, damage tolerance" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Damage tolerance</title>
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</head>
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<body id="rbafydamagetolerance"><a name="rbafydamagetolerance"><!-- --></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">Damage tolerance</h1>
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<div><p>The server provides several mechanisms to reduce or eliminate damage
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caused by disk errors.</p>
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<div class="section"><p>For example, mirroring, checksums, and RAID disks
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can all reduce the possibility of disk problems. The <span class="keyword">DB2<sup>®</sup> UDB for iSeries™</span> functions
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also have a certain amount of tolerance to damage caused by disk errors or
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system errors.</p>
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</div>
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<div class="section"><p>A DROP operation always succeeds, regardless of the damage. This
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ensures that should damage occur, at least the table, view, SQL package, index,
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procedure, function, or distinct type can be deleted and restored or created
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again.</p>
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</div>
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<div class="section"><p>In the event that a disk error has damaged a small portion of
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the rows in a table, the <span class="keyword">DB2 UDB for iSeries</span> database
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manager allows you to read rows still accessible.</p>
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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="rbafydataintex.htm" title="Data integrity protects data from being destroyed or changed by unauthorized persons, system operation or hardware failures (such as physical damage to a disk), programming errors, interruptions before a job is completed (such as a power failure), or interference from running applications at the same time (such as serialization problems).">Data integrity</a></div>
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</div>
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</div>
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</body>
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</html> |