65 lines
5.1 KiB
HTML
65 lines
5.1 KiB
HTML
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<meta name="DC.Title" content="Parallel data loader support to use with the CPYFRMIMPF command" />
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<meta name="abstract" content="The Copy From Import File (CPYFRMIMPF) supports copying the data in parallel from an import file to a to-file using multiple jobs during the copy. This allows you to copy data files from other platforms into a to-file quickly and easily. This is especially useful for those who use data warehousing. To use multiple jobs, your server must have the Symmetric Multiprocessing Product (SMP)." />
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<meta name="description" content="The Copy From Import File (CPYFRMIMPF) supports copying the data in parallel from an import file to a to-file using multiple jobs during the copy. This allows you to copy data files from other platforms into a to-file quickly and easily. This is especially useful for those who use data warehousing. To use multiple jobs, your server must have the Symmetric Multiprocessing Product (SMP)." />
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<title>Parallel data loader support to use with the CPYFRMIMPF command</title>
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</head>
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<body id="rbal3par"><a name="rbal3par"><!-- --></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">Parallel data loader support to use with the CPYFRMIMPF command</h1>
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<div><p>The Copy From Import File (CPYFRMIMPF) supports copying the data
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in parallel from an import file to a to-file using multiple jobs during the
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copy. This allows you to copy data files from other platforms into a to-file
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quickly and easily. This is especially useful for those who use data warehousing.
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To use multiple jobs, your server must have the Symmetric Multiprocessing
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Product (SMP).</p>
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<p>The number of jobs you use during the copy is determined by the DEGREE(*NBRTASKS)
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parameter of the <a href="../cl/chgqrya.htm">Change
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Query Attributes (CHGQRYA)</a> command. If the from-file has less than
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50,000 records, only one job will be used regardless of the *NBRTASKS value.</p>
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<p>The <a href="../cl/cpyfrmimpf.htm">CPYFRMIMPF</a> command
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(with the parallel data loader support) essentially breaks the import file
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into smaller portions or blocks. Each of these smaller portions is submitted
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in parallel, so the entire file processes at the same time. (This eliminates
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the latency of sequential processing.)</p>
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<p>To maintain the same relative record numbers of the from-file in the to-file,
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use only one job for the copy. Specify DEGREE(*NONE).</p>
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<div class="note"><span class="notetitle">Note:</span> <img src="./delta.gif" alt="Start of change" />Records are not copied in parallel when the from stream
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file (FROMSTMF) parameter is specified.<img src="./deltaend.gif" alt="End of change" /></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="rbal3usingcpyfrm.htm" title="The Copy From Import File (CPYFRMIMPF) command maps or parses the data from ("import") an import file to the to-file.">Use the Copy From Import File (CPYFRMIMPF) command to copy between different servers</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="rbal3usingcpyfrm.htm" title="The Copy From Import File (CPYFRMIMPF) command maps or parses the data from ("import") an import file to the to-file.">Use the Copy From Import File (CPYFRMIMPF) command to copy between different servers</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="rbal3imp.htm" title="You can use the Copy from Import File (CPYFRMIMPF) command to import data from a database file or DDM file.">Importing data to the iSeries when the from-file is a database file or DDM file</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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