90 lines
5.2 KiB
HTML
90 lines
5.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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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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<meta name="DC.Title" content="CPI4324 - Temporary file built for file &1" />
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<title>CPI4324 - Temporary file built for file &1</title>
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</head>
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<body id="cpi4324"><a name="cpi4324"><!-- --></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">CPI4324 - Temporary file built for file &1</h1>
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<div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th colspan="2" align="center" valign="middle" id="d0e16">CPI4324</th>
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</tr>
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</thead>
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<tbody><tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Message Text:</td>
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<td valign="middle" width="73.9795918367347%" headers="d0e16 ">Temporary file built for file &1.</td>
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</tr>
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<tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Cause Text:</td>
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<td valign="middle" width="73.9795918367347%" headers="d0e16 ">A temporary file was built for member &3 of file &1 in library &2
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for reason code &4. This process took &5 minutes and &6 seconds.
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The temporary file was required in order for the query to be processed. The
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reason codes and their meanings follow: <ol><li>The file is a join logical file and its join-type (JDFTVAL) does not match
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the join-type specified in the query.</li>
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<li>The format specified for the logical file references more than one physical
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file.</li>
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<li>The file is a complex SQL view requiring a temporary file to contain the
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results of the SQL view.</li>
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<li>For an update-capable query, a subselect references a field in this file
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which matches one of the fields being updated.</li>
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<li>For an update-capable query, a subselect references SQL view &1, which
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is based on the file being updated.</li>
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<li>For a delete-capable query, a subselect references either the file from
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which records are to be deleted or an SQL view or logical file based on the
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file from which records are to be deleted.</li>
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<li>The file is user-defined table function &8 in &2, and all the
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records were retrieved from the function. The processing time is not returned
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for this reason code.</li>
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<li>The file is a partition file requiring a temporary file for processing
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the grouping or join.</li>
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</ol>
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</td>
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</tr>
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<tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Recovery Text:</td>
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<td valign="middle" width="73.9795918367347%" headers="d0e16 ">You may want to change the query to refer to a file that does not require
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a temporary file to be built.</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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<div class="section"><p>Before the query processing could begin, the data in the specified
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table had to be copied into a temporary physical table to simplify running
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the query. The message help contains the reason why this message was sent.</p>
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</div>
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<div class="section"><p>If the specified table selects few rows, typically less than 1000
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rows, then the row selection part of the query's implementation should not
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take a significant amount of resource and time. However if the query is taking
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more time and resources than can be allowed, consider changing the query so
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that a temporary table is not required.</p>
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</div>
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<div class="section"><p>One way to do this is by breaking the query into multiple steps.
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Consider using an INSERT statement with a subselect to select only the rows
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that are required into a table, and then use that table's rows for the rest
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of the query.</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="pimes.htm" title="You can evaluate the structure and performance of the given SQL statements in a program using informational messages put in the job log by the database manager.">Query optimization performance information messages</a></div>
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</div>
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</div>
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</body>
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</html> |