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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>Analyzing SQL Performance Using Oracle Enterprise Manager</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="Analyzing SQL Performance Using Oracle Enterprise Manager" /> <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_analyze001.htm" title="Previous" type="text/html" /> <link rel="next" href="spa_analyze003.htm" title="Next" 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_analyze001.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="spa_analyze003.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CACGCAID" name="CACGCAID"></a><a id="RATUG188" name="RATUG188"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>Analyzing SQL Performance Using Oracle Enterprise Manager</h1> <a name="BEGIN" id="BEGIN"></a> <p>This section describes how to analyze SQL performance before and after the system change using Oracle Enterprise Manager.</p> <a id="RATUG279" name="RATUG279"></a> <p class="subhead2">To analyze SQL performance using Enterprise Manager:</p> <ol> <li> <p>On the Guided Workflow page, click the <span class="bold">Execute</span> icon for Compare Step 2 and Step 3.</p> <p>The Run SQL Trial Comparison page appears.</p> </li> <li> <p>To compare trials other than those listed by default, select the desired trials in the <span class="bold">Trial 1 Name</span> and <span class="bold">Trial 2 Name</span> lists.</p> <p>Note that you cannot compare a statistical trial with a trial that tests the explain plan only.</p> </li> <li> <p>In the Comparison Metric list, select the comparison metric to use for the comparison analysis:</p> <ul> <li> <p><span class="bold">Elapsed Time</span></p> </li> <li> <p><span class="bold">CPU Time</span></p> </li> <li> <p><span class="bold">User I/O Time</span></p> </li> <li> <p><span class="bold">Buffer Gets</span></p> </li> <li> <p><span class="bold">Physical I/O</span></p> </li> <li> <p><span class="bold">Optimizer Cost</span></p> </li> <li> <p><span class="bold">I/O Interconnect Bytes</span></p> </li> </ul> <p>Optimizer Cost is the only comparison metric available if you generated execution plans only in the SQL trials.</p> <p>To perform the comparison analysis by using more than one comparison metric, perform separate comparison analyses by repeating this procedure with different metrics.</p> </li> <li> <p>In the Schedule section:</p> <ol> <li> <p>In the Time Zone list, select your time zone code.</p> </li> <li> <p>Select <span class="bold">Immediately</span> to start the task now, or <span class="bold">Later</span> to schedule the task to start at a time specified using the Date and Time fields.</p> </li> </ol> </li> <li> <p>Click <span class="bold">Submit</span>.</p> <p>The Guided Workflow page appears when the comparison analysis begins.</p> <p>The status icon of this step changes to an arrow icon while the comparison analysis is in progress. To refresh the status icon, click <span class="bold">Refresh</span>. Depending on the amount of performance data collected from the pre-change and post-change executions, the comparison analysis may take a long time to complete. After the comparison analysis is completed, the Status icon changes to a check mark and the Execute icon for the next step is enabled.</p> </li> <li> <p>Once SQL Performance Analyzer has analyzed the pre-change and post-change performance data, generate a SQL Performance Analyzer report that you can use for further analysis.</p> <p>On the Guided Workflow page, click the <span class="bold">Execute</span> icon for View Trial Comparison Report.</p> <p>The SQL Performance Analyzer Task Report page appears. Review the report, as described in <a href="spa_analyze003.htm#CACHAFHE">"Reviewing the SQL Performance Analyzer Report Using Oracle Enterprise Manager"</a>.</p> </li> </ol> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="spa_analyze001.htm#CACFGHBH">Comparing SQL Trials Using Oracle Enterprise Manager</a></p> </div> </div> <!-- class="sect2" --> <!-- 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. 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