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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>Modifying Snapshot Settings</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="Modifying Snapshot Settings" /> <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_auto009.htm" title="Previous" type="text/html" /> <link rel="next" href="tdppt_auto011.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_auto009.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdppt_auto011.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CIHBBHBE" name="CIHBBHBE"></a><a id="TDPPT027" name="TDPPT027"></a></p> <div class="sect3"><!-- infolevel="all" infotype="General" --> <h1>Modifying Snapshot Settings</h1> <a name="BEGIN" id="BEGIN"></a> <p>By default, AWR generates snapshots of performance data once every hour. Alternatively, you can modify the default values of both the interval between snapshots and their retention period.</p> <p class="orderedlisttitle">To modify the snapshot settings<a id="sthref75" name="sthref75"></a>: </p> <ol> <li> <p>From the Database Home page, click <span class="bold">Server</span>.</p> <p>The Server subpage appears.</p> </li> <li> <p>In the Statistics Management section, click <span class="bold">Automatic Workload Repository</span>.</p> <p>The Automatic Workload Repository page appears.</p> </li> <li> <p>Click <img src="shortcut.png" alt="callback" border="0" /><a href="javascript:void(0);" onclick="redirectEMpage('AWR_EDIT_SETTINGS');"><span class="bold">Edit</span></a>.</p> <p>The Edit Settings page appears.</p> </li> <li> <p>For <span class="bold">Snapshot Retention</span>, do one of the following:</p> <ul> <li> <p>Select <span class="bold">Use Time-Based Retention Period (Days)</span>, and in the associated field enter the number of days to retain the snapshots.</p> </li> <li> <p>Select <span class="bold">Retain Forever</span> to retain snapshots indefinitely.</p> </li> </ul> <p>It is recommended that you increase the snapshot retention period whenever possible based on the available disk space.</p> </li> <li> <p>For <span class="bold">Snapshot Collection</span>, do one of the following:</p> <ul> <li> <p>Select <span class="bold">System Snapshot Interval</span>, and in the <span class="bold">Interval</span> list, select the desired interval to change the interval between snapshots.</p> </li> <li> <p>Select <span class="bold">Turn off Snapshot Collection</span> to disable snapshot collection.</p> </li> </ul> </li> <li> <p>Click the link next to <span class="bold">Collection Level</span>.</p> <p>The Initialization Parameter page appears.</p> <p>To change the statistics level, select the desired value in the Value list for the <code>statistics_level</code> parameter. Click <span class="bold">Save to File</span> to set the value in the server parameter file.</p> </li> <li> <p>Click <span class="bold">OK</span> to apply the changes.</p> <p>The Automatic Workload Repository page appears and displays the new settings.</p> </li> </ol> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="tdppt_auto008.htm#CIHHCACG">Managing AWR Snapshots</a></p> <p><a href="tdppt_auto009.htm#CIHHBFGG">Creating Snapshots</a></p> </div> </div> <!-- class="sect3" --> <!-- class="sect2" --> <!-- 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 © 2007, 2009, Oracle and/or its affiliates. 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