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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>Introduction to Database Replay</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=" Introduction to Database Replay" /> <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="rat_intro002.htm" title="Previous" type="text/html" /> <link rel="next" href="dbr_intro001.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="rat_intro002.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="dbr_intro001.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BABBDGIB" name="BABBDGIB"></a><a id="RATUG104" name="RATUG104"></a></p> <h1>Introduction to Database Replay</h1> <p><a name="BEGIN" id="BEGIN"></a></p> <p>You can use <a id="sthref6" name="sthref6"></a>Database Replay to capture a workload on the production system and replay it on a test system with the exact timing, concurrency, and transaction characteristics of the original workload. This enables you to test the effects of a system change without affecting the production system.</p> <p>Database Replay supports workload capture on a system running Oracle Database 10g Release 2 and newer releases. In order to capture a workload on a system running Oracle Database 10g Release 2, the database version can be 10.2.0.4 or higher. Workload replay is only supported on systems running Oracle Database 11g Release 1 and newer releases.</p> <div class="helpinfonote"> <p><span class="bold">Note: </span>To use the workload capture feature on a system running Oracle9<span class="italic">i</span> Database, contact Oracle Support for more information.</p> </div> <p><a id="RATUG254" name="RATUG254"></a></p> <p class="subhead2">To analyze the effect of system changes using <a id="sthref7" name="sthref7"></a><a id="sthref8" name="sthref8"></a>Database Replay:</p> <ol> <li> <p>On the production system, capture the workload into capture files, as described in <a href="dbr_intro001.htm#CCHFFJAE">"Workload Capture"</a>.</p> </li> <li> <p>Copy the capture files to the test system and preprocess them, as described in <a href="dbr_intro002.htm#CHDJBDFA">"Workload Preprocessing"</a>.</p> </li> <li> <p>On the test system, replay the preprocessed files, as described in <a href="dbr_intro003.htm#CHDEIEGD">"Workload Replay"</a>.</p> </li> <li> <p>Using the reports generated by Database Replay, perform detailed analysis of both the workload capture and workload replay, as described in <a href="dbr_intro004.htm#CHDJEBAC">"Analysis and Reporting"</a>.</p> </li> </ol> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="dbr_intro001.htm#CCHFFJAE">Workload Capture</a></p> <p><a href="dbr_intro002.htm#CHDJBDFA">Workload Preprocessing</a></p> <p><a href="dbr_intro003.htm#CHDEIEGD">Workload Replay</a></p> <p><a href="dbr_intro004.htm#CHDJEBAC">Analysis and Reporting</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 © 2008, 2009, Oracle and/or its affiliates. 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