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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <title>Tuning Regressed SQL Statements After Testing a Database Upgrade</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 005" /> <meta name="date" content="2009-06-04T10:50:31Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Tuning Regressed SQL Statements After Testing a Database Upgrade" /> <meta name="relnum" content="11g Release 2 (11.2)" /> <meta name="partnum" content="E12254-01" /> <link rel="copyright" href="./dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="./dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="prev" href="spa_upgrade009.htm" title="Previous" type="text/html" /> <script src="./callback.js" type="text/javascript"></script> <noscript>Your browser does not support JavaScript. This help page requires JavaScript to render correctly.</noscript> </head> <body> <div class="zz-skip-header"><a href="#BEGIN">Skip Headers</a></div> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="spa_upgrade009.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> </tr> </table> <p><a id="CIADFIIF" name="CIADFIIF"></a><a id="RATUG228" name="RATUG228"></a></p> <div class="sect1"><!-- infolevel="all" infotype="General" --> <h1>Tuning Regressed SQL Statements After Testing a Database Upgrade</h1> <a name="BEGIN" id="BEGIN"></a> <p>In some cases, SQL Performance Analyzer may identify SQL statements whose performance regressed after you upgrade the database on the test system.</p> <p>If you are upgrading from Oracle Database 10<span class="italic">g</span> and newer releases, you can tune the regressed SQL statements by using the SQL Tuning Advisor or SQL plan baselines, as described in <a href="spa_analyze.htm#CACCDGAG">Comparing SQL Trials</a>.</p> <p>If you are upgrading from Oracle 9<span class="italic">i</span> Database, you will need to use the <code>DBMS_SQLTUNE</code> package to tune the regressed SQL statements one at a time.</p> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=PFGRF02603','newWindow').focus()"><span class="italic">Oracle Database Performance Tuning Guide</span></a> for information about using the <code>DBMS_SQLTUNE</code> package</p> <p><a href="spa_upgrade.htm#CIADFIDI">Testing a Database Upgrade</a></p> </div> </div> <!-- class="sect1" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 2008, 2009, Oracle and/or its affiliates. All rights reserved.</span><br /> <a href="./dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td> <td align="center"><a href="spa_upgrade009.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> </tr> </table> </div> <!-- class="footer" --> </body> </html>
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