60 lines
3.4 KiB
HTML
60 lines
3.4 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.Title" content="SQL7916 - Blocking used for query" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>SQL7916 - Blocking used for query</title>
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</head>
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<body id="sql7916"><a name="sql7916"><!-- --></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">SQL7916 - Blocking used for query</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">SQL7916</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 ">Blocking used for query.</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 ">Blocking has been used in the implementation of this query. SQL will
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retrieve a block of records from the database manager on the first FETCH statement.
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Additional FETCH statements have to be issued by the calling program, but
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they do not require SQL to request more records, and therefore will run faster.</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 ">SQL attempts to utilize blocking whenever possible. In cases where
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the cursor is not update capable, and commitment control is not active, there
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is a possibility that blocking will be used.</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>SQL will request multiple rows from the database manager when
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running this statement instead of requesting one row at a time.</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="pimesodp.htm" title="Several of the following SQL run-time messages refer to open data paths.">Query optimization performance information messages and open data paths</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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