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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>About System Statistics</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-14T18:10:1Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="About System Statistics" /> <meta name="relnum" content="Release 3.2" /> <meta name="partnum" content="E12511-01" /> <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="up" href="preface" title="Home" type="text/html" /> <link rel="up" href="sql_utl.htm" title="Using Oracle Application Ex..." type="text/html" /> <link rel="up" href="dbadm_montitor.htm" title="Monitoring the Database" type="text/html" /> <link rel="up" href="dbadm_stats.htm" title="About System Statistics" type="text/html" /> <link rel="prev" href="dbadm_sessions.htm" title="Previous" type="text/html" /> <link rel="next" href="dbadm_topsql.htm" title="Next" type="text/html" /> </head> <body> <p id="BREADCRUMBING"><a href="preface" title="Home">Home</a> > <a href="sql_utl.htm" title="Using Oracle Application Ex...">Using Oracle Application Ex...</a> > <a href="dbadm_montitor.htm" title="Monitoring the Database">Monitoring the Database</a> > About System Statistics</p> <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="dbadm_sessions.htm"><img src="../dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="dbadm_topsql.htm"><img src="../dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CIHFAAFD" name="CIHFAAFD"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1><a name="AEUTL279" id="AEUTL279"></a>About System <a id="sthref349" name="sthref349"></a>Statistics</h1> <p>The System Statistics page displays statistics for:</p> <ul> <li> <p><span class="bold">Physical I/O</span>. A physical I/O is an I/O that requires disk access. This report displays disk access statistics for physical reads and writes.</p> </li> <li> <p><span class="bold">Logical I/O</span>. An logical I/O is an I/O that is satisfied in memory or disk. Displays the sum of buffer reads which might be consistent gets or current mode gets. Redo is the buffer in the SGA that contains information about changes.</p> </li> <li> <p><span class="bold">Memory Statistics</span>. Displays memory consumption of the database.</p> </li> <li> <p><span class="bold">Time Statistics</span>. Shows various times consumed by the database.</p> </li> <li> <p><span class="bold">SQL Cursor</span> Statistics. Displays statistics about the cursors in the Oracle database.</p> </li> <li> <p><span class="bold">Transaction Statistics</span>. Shows the number of transactions performed.</p> </li> </ul> <p>To view the System Statistics page:</p> <ol> <li> <p>On the Workspace home page, click the <span class="bold">Utilities</span> icon and then <span class="bold">Database Monitor</span>.</p> </li> <li> <p>Click <span class="bold">System Statistics</span>.</p> </li> <li> <p>If prompted, enter the appropriate administrator user name and password and click <span class="bold">Login</span>.</p> <p>The System Statistics page appears.</p> </li> </ol> <p>Additional controls on the System Statistics page include:</p> <ul> <li> <p><span class="bold">Refresh Report</span> - Refresh the System Statistics report.</p> </li> <li> <p><span class="bold">Save Statistics</span> - Save the current report.</p> </li> <li> <p><span class="bold">Show delta between current and saved values</span> - Click this check box to display actual statistic values, or display deltas between an saved value and the current value.</p> <div align="center"> <div class="inftblnotealso"><br /> <table class="NoteAlso oac_no_warn" summary="" cellpadding="3" cellspacing="0"> <tbody> <tr> <td align="left"> <p class="notep1">See Also:</p> "Memory Configuration and Use" in <a href="http://www.oracle.com/pls/db112/lookup?id=PFGRF014"><span class="italic">Oracle Database Performance Tuning Guide</span></a></td> </tr> </tbody> </table> <br /></div> <!-- class="inftblnotealso" --></div> </li> </ul> </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 © 2003, 2009, Oracle and/or its affiliates. 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