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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>ADDM Recommendations</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 005" /> <meta name="date" content="2009-05-27T15:13:1Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="ADDM Recommendations" /> <meta name="relnum" content="11g Release 2 (11.2)" /> <meta name="partnum" content="E10822-01" /> <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="tdppt_auto002.htm" title="Previous" type="text/html" /> <link rel="next" href="tdppt_auto004.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="tdppt_auto002.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdppt_auto004.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BABBCGJF" name="BABBCGJF"></a><a id="TDPPT301" name="TDPPT301"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>ADDM Recommendations</h1> <a name="BEGIN" id="BEGIN"></a> <p>In addition to diagnosing performance problems, ADDM recommends possible solutions. When appropriate, ADDM recommends multiple solutions from which you can choose. ADDM<a id="sthref56" name="sthref56"></a> recommendations include the following:</p> <ul> <li> <p>Hardware changes</p> <p>Adding CPUs or changing the I/O subsystem configuration</p> </li> <li> <p>Database configuration</p> <p>Changing initialization parameter settings</p> </li> <li> <p>Schema changes</p> <p>Hash partitioning a table or index, or using automatic segment space management (ASSM)</p> </li> <li> <p>Application changes</p> <p>Using the cache option for sequences or using bind variables</p> </li> <li> <p>Using other advisors</p> <p>Running SQL Tuning Advisor on high-load SQL statements or running the Segment Advisor on hot objects</p> </li> </ul> <p>ADDM benefits apply beyond production systems. Even on development and test systems, ADDM can provide an early warning of potential performance problems.</p> <p>Performance tuning is an iterative process. Fixing one problem can cause a bottleneck to shift to another part of the system. Even with the benefit of the ADDM analysis, it can take multiple tuning cycles to reach a desirable level of performance.</p> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="topicid:ADMQS12072">About the Segment Advisor</a> for information the Segment Advisor</p> <p><a href="tdppt_auto001.htm#CHDJBEGD">Overview of Automatic Database Diagnostic Monitor</a></p> <p><a href="tdppt_auto013.htm#CEGFBDIJ">Implementing Automatic Database Diagnostic Monitor Recommendations</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 © 2007, 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="tdppt_auto002.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdppt_auto004.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </div> <!-- class="footer" --> </body> </html>
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