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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>Clearing Collection Session State</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-14T16:11:32Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Clearing Collection Session State" /> <meta name="relnum" content="Release 3.2" /> <meta name="partnum" content="E11947-01" /> <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.htm" title="Home" type="text/html" /> <link rel="up" href="advnc.htm" title="Advanced Programming Techni..." type="text/html" /> <link rel="up" href="advnc_collections.htm" title="Using Collections" type="text/html" /> <link rel="up" href="advnc_coll_clear.htm" title="Clearing Collection Session..." type="text/html" /> <link rel="prev" href="advnc_coll_mg.htm" title="Previous" type="text/html" /> <link rel="next" href="advnc_act_log.htm" title="Next" type="text/html" /> </head> <body> <p id="BREADCRUMBING"><a href="preface.htm" title="Home">Home</a> > <a href="advnc.htm" title="Advanced Programming Techni...">Advanced Programming Techni...</a> > <a href="advnc_collections.htm" title="Using Collections">Using Collections</a> > Clearing Collection Session...</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="advnc_coll_mg.htm"><img src="dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="advnc_act_log.htm"><img src="dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BABHBFJA" name="BABHBFJA"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1><a name="HTMDB25878" id="HTMDB25878"></a>Clearing Collection <a id="sthref2229" name="sthref2229"></a>Session State</h1> <p>Clearing the session state of a collection removes the collection members. A shopping cart is a good example of when you might need to clear collection session state. When a user requests to empty the shopping cart and start again, you must clear the session state for a collection. You can remove session state of a collection by calling the <code>TRUNCATE_COLLECTION</code> method or by using <code>f?p</code> syntax.</p> <p>Calling the <code>TRUNCATE_COLLECTION</code> method deletes the existing collection and then recreates it, for example:</p> <pre xml:space="preserve" class="oac_no_warn"> <a id="sthref2230" name="sthref2230"></a>APEX_COLLECTION.TRUNCATE_COLLECTION( p_collection_name => collection name); </pre> <p>You can also use the sixth <code>f?p</code> syntax argument to clear session state, for example:</p> <pre xml:space="preserve" class="oac_no_warn"> f?p=App:Page:Session::NO:collection name </pre> <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> <a href="concept_url.htm#BEIFCDGF">"Understanding URL Syntax"</a></td> </tr> </tbody> </table> <br /></div> <!-- class="inftblnotealso" --></div> </div> <!-- 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 © 2003, 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="advnc_coll_mg.htm"><img src="dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="advnc_act_log.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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