71 lines
5.0 KiB
HTML
71 lines
5.0 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="concept" />
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<meta name="DC.Title" content="First-failure data capture" />
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<meta name="abstract" content="The iSeries server provides a way for you to capture and report error information for the distributed relational database. This function is called first-failure data capture (FFDC)." />
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<meta name="DC.subject" content="problem handling, error reporting, first-failure data capture, definition" />
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<meta name="keywords" content="problem handling, error reporting, first-failure data capture, definition" />
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<meta name="DC.Relation" scheme="URI" content="rbal1ffdcap.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbal1appxffdcdump.htm" />
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<title>First-failure data capture</title>
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</head>
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<body id="rbal1firstf"><a name="rbal1firstf"><!-- --></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">First-failure data capture</h1>
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<div><p>The <span class="keyword">iSeries™ server</span> provides
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a way for you to capture and report error information for the distributed
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relational database. This function is called <dfn class="term">first-failure data capture
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(FFDC)</dfn>.</p>
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<p>The primary purpose of FFDC support is to provide extensive information
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on errors detected in the DDM components of the <span class="keyword">i5/OS™</span> operating
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system from which an Authorized Program Analysis Report (APAR)
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can be created.</p>
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<p>You can also use this function to help you diagnose some system-related
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application problems. By means of this function, key structures and the DDM
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data stream are automatically dumped to the spooled file. The goal of this
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automatic dumping of error information on the first occurrence of an error
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is to minimize the need to have to create the failure again to report it for
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service support. FFDC is active in both the application requester and the
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application server.</p>
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<p>One thing you should keep in mind is that not all negative SQLCODEs result
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in dumps; only those that might indicate an APAR situation are dumped.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rbal1appxffdcdump.htm">A first-failure data capture dump</a></strong><br />
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System-detected internal failures trigger first-failure data capture (FFDC) data to be dumped. FFDC output can be disabled by setting the QSFWERRLOG system value to *NOLOG, but it is strongly recommended that you do not disable the FFDC dump process.</li>
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<li class="ulchildlink"><strong><a href="rbal1fdodes.htm">FFDC dump output description</a></strong><br />
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This information describes the data areas and types of information available in a first-failure data capture (FFDC) dump output.</li>
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<li class="ulchildlink"><strong><a href="rbal1ddmec.htm">DDM error codes</a></strong><br />
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These error codes are included in the FFDC dumps (<strong><span>L</span></strong> in
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the sample dump output) that identify DDM error conditions. These conditions
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might or might not be defined by the DDM architecture.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbal1ffdcap.htm" title="This topic collection provides additional problem-analysis information. It is useful to specialists responsible for problem determination. It is also for suppliers of software products designed to conform to the Distributed Relational Database Architecture who want to test connectivity to an iSeries server.">Interpret trace job and FFDC data</a></div>
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</div>
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</div>
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