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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>Monitoring Real-Time Database Performance</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=" Monitoring Real-Time Database Performance" /> <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_auto014.htm" title="Previous" type="text/html" /> <link rel="next" href="tdppt_realtime001.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_auto014.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdppt_realtime001.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CHDIHEBJ" name="CHDIHEBJ"></a><a id="TDPPT033" name="TDPPT033"></a></p> <h1>Monitoring Real-Time Database Performance</h1> <p><a name="BEGIN" id="BEGIN"></a></p> <p>The Performance page in Oracle Enterprise Manager (Enterprise Manager) displays information in three sections that you can use to assess the overall performance of the database in real time.<a id="sthref91" name="sthref91"></a><a id="sthref92" name="sthref92"></a><a id="sthref93" name="sthref93"></a></p> <p>Typically, you should use the automatic diagnostic feature of Automatic Database Diagnostic Monitor (ADDM) to identify performance problems with the database, as described in <a href="tdppt_auto.htm#CHDEBDAJ">Automatic Database Performance Monitoring</a>. In some cases, you may want to monitor the database performance in real time to identify performance problems as they occur. For example, ADDM performs its analysis after each Automatic Workload Repository (AWR) snapshot, which by default is once every hour. However, if you notice a sudden spike in database activity on the Performance page, then you may want to investigate the incident before the next ADDM analysis.</p> <p>By drilling down to other pages from the Performance page, you can identify database performance problems in real time. If you find a problem, then you can run ADDM manually to analyze it immediately without having to wait until the next ADDM analysis. To learn how to run ADDM manually, see <a href="tdppt_manual001.htm#CHDGGEBG">"Manually Running ADDM to Analyze Current Database Performance"</a>.</p> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="tdppt_realtime001.htm#CHDEIBAB">Monitoring User Activity</a></p> <p><a href="tdppt_realtime011.htm#CHDBEHAG">Monitoring Instance Activity</a></p> <p><a href="tdppt_realtime019.htm#CHDEBIAA">Monitoring Host Activity</a></p> <p><a href="tdppt_realtime023.htm#CBBIGBHH">Customizing the Database Performance Page</a></p> </div> <!-- 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_auto014.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdppt_realtime001.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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