<TITLE>
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<LINK REL="stylesheet" type="text/css" title="ResearchStyle" href="/research/research.css">
<LINK REL="Stylesheet" TYPE="text/css" TITLE="Sunstyle" HREF="/template/sunstyle.css">
<SCRIPT language="JavaScript">
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function gotoFunction() {
self.location = document.productGoto.productList.options[document.productGoto.productList.selectedIndex].value;
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// -->
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</head>
<body>
<div id="Wrapper_FixedWidth">
<div id="Wrapper_FixedWidth_Header">
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<div class="header">
<div class="sunquicklinks_wrapper">
<!--SS_BEGIN_SNIPPET(fragment50,ocom translation)--> <!--** retrieve cache lifespan parameter: **-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
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<!-- User Interest SC code -->
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var OracleandSun = new Array();
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oracleAndsun('ocom','en');
</script><!--
<div style='float:right'><a href='http://www.oracle.com/sun/index.html' onclick="navTrack('ocom','en','header','oracle and sun');"><img src='http://www.oracleimg.com/ocom/groups/systemobject/@mktg_admin/documents/digitalasset/oracle-sun-btn.png' id='oracleandsun' alt='Sun Quick Links' width='107' height='21' border='0' onMouseOver="mvqMOv('panelDiva','oracleandsun');this.src=OracleandSun[1];" onMouseOut="mvqMOu('panelDiva');this.src=OracleandSun[0];"></a></div> -->
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</div>
<div class="logo_wrapper">
<div class="logo" style="PADDING-TOP: 4px">
<!--SS_BEGIN_SNIPPET(fragment58,ocom translation)--> <!--** retrieve cache lifespan parameter: **-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
<!-- User Category SC code -->
<!-- User Interest SC code -->
<!-- Date: 7 Sep 2010 -->
<!-- Author: Girish Gowdar, web Technology -->
<!-- Comment : Logo img url and link customized. Variable declared in each Country translation file if need to customize. -->
<a href='http://www.oracle.com/' onclick="navTrack('ocom','en','header','logo');"><img src='/admin/images/ocom/hp/oralogo_small.gif' border='0' /></a>
<!--SS_END_SNIPPET(fragment58,ocom translation)-->
</div>
<div class="welcomesignin_wrapper">
<!--SS_BEGIN_SNIPPET(fragment52,ocom translation)--> <!--** retrieve cache lifespan parameter: **-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
<!-- User Category SC code -->
<!-- User Interest SC code -->
<span class="profile">
<script type="text/javascript">
if ( USER.guid )
{
document.write('Welcome ' + USER.firstname + ' ( <a class=profile href=https://myprofile.oracle.com/EndUser/faces/profile/sso/updateUser.jspx?nextURL=' + location.href + '\>' + 'Account' + '<\/a> | <a class=profile href=http://www.oracle.com/corporate/contact/accounthelp.html>' + 'Help' + '<\/a> | <a class=profile href=javascript:sso_sign_out();>' + 'Sign Out' + '<\/a> )');
}
else
{
document.write('<span class=profile>( ' + ' <a href=http://www.oracle.com/webapps/redirect/signon?nexturl=' + location.href + '>Sign In/Register for Account</a> ' + ' <span style=color: rgb(0, 0, 0)>|</span> ' + '<a href=http://www.oracle.com/corporate/contact/accounthelp.html>Help</a>' + ' )</span>');
}
</script>
<a class="legalese" onmouseover="mvqMOv('panelDiv','img1');" onmouseout="mvqMOu('panelDiv');" href="#">United States<img style="MARGIN-LEFT: 4px;" id="img1" border="0" alt="Change Country, Oracle Worldwide Web Sites" src="http://www.oracleimg.com/ocom/groups/public/documents/digitalasset/dropdown-arrow-new.gif" /></a>
<script language="JavaScript" type="text/javascript">worldwideCountries()</script>
</span>
<!--SS_END_SNIPPET(fragment52,ocom translation)-->
<!--SS_BEGIN_SNIPPET(fragment51,ocom translation)--> <!--** retrieve cache lifespan parameter: **-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
<!-- User Category SC code -->
<!-- User Interest SC code -->
<a href='http://www.oracle.com/us/community/index.html' class='legalese' onMouseOver="mvqMOv('panelDiv_comm','img2');" onMouseOut="mvqMOu('panelDiv_comm');" onclick="navTrack('ocom','en','header','communities');">Communities<img src='http://www.oracleimg.com/ocom/groups/public/documents/digitalasset/dropdown-arrow-new.gif' style='margin-left: 4px;' border='0' id='img2'></a>
<div id='panelDiv_comm' style='position:absolute;right:50%; margin-right:-383px; visibility:hidden; z-index:20000; WIDTH: 180px; border:1px solid #9A9A9A; padding:12px; BACKGROUND-COLOR: #ffffff' onmouseover="mvqMOv('panelDiv_comm','img2');" onmouseout="mvqMOu('panelDiv_comm');">
<table width='100%'><tr valign='top' align='left'><td width='30%' class='sngPst'>
<div><b>Social Applications</b></a></div>
<div ><a href='https://mix.oracle.com/' class='sngPst' onclick="navTrack('ocom','en','header','oraclemix');">Oracle Mix</a></div>
<div ><a href='http://www.oracle.com/blogs/index.html' class='sngPst' onclick="navTrack('ocom','en','header','oracleblogs');">Oracle Blogs</a></div>
<div ><a href='http://wiki.oracle.com/' class='sngPst' onclick="navTrack('ocom','en','header','oraclewiki');">Oracle Wiki</a></div>
<div ><a href='http://www.facebook.com/Oracle' class='sngPst' onclick="navTrack('ocom','en','header','oracleonfacebook');">Oracle on Facebook</a></div>
<div ><a href='http://twitter.com/oracle' class='sngPst' onclick="navTrack('ocom','en','header','oracleontwitter');">Oracle on Twitter</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Networks</b></a></div>
<div ><a href='http://www.oracle.com/technetwork/community/oracle-ace/index.html' class='sngPst' onclick="navTrack('ocom','en','header','oracleaces');">Oracle ACEs</a></div>
<div ><a href='http://www.oracle.com/partners/index.htm' class='sngPst' onclick="navTrack('ocom','en','header','oraclepartnernetwork');">Oracle PartnerNetwork</a></div>
<div ><a href='http://www.oracle.com/technetwork/index.html' class='sngPst' onclick="navTrack('ocom','en','header','oracletechnologynetwork');">Oracle Technology Network</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Knowledge Base</b></a></div>
<div ><a href='http://www.oracle.com/technology/community/user_groups/index.html' class='sngPst' onclick="navTrack('ocom','en','header','oracleusergroups');">Oracle User Groups</a></div>
<div ><a href='http://forums.oracle.com/forums/index.jspa?cat=1' class='sngPst' onclick="navTrack('ocom','en','header','oraclediscussionforums');">Oracle Discussion Forums</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Support</b></a></div>
<div ><a href='https://communities.oracle.com/portal/server.pt/community/support/219' class='sngPst' onclick="navTrack('ocom','en','header','myoraclesupportcommunity');">My Oracle Support Community</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b></b></a></div>
<tr><td></td></tr>
</table></div>
<!--SS_END_SNIPPET(fragment51,ocom translation)-->
<!--SS_BEGIN_SNIPPET(fragment53,ocom translation)--> <!--** retrieve cache lifespan parameter: **-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
<!-- User Category SC code -->
<!-- User Interest SC code -->
<a href='#' class='legalese' onMouseOver="mvqMOv('panelDiv_iam','img3');" onMouseOut="mvqMOu('panelDiv_iam');">I am a...<img src='http://www.oracleimg.com/ocom/groups/public/documents/digitalasset/dropdown-arrow-new.gif' style='margin-left: 4px;' border='0' id='img3'></a>
<div id='panelDiv_iam' style='position:absolute;right:50%; margin-right:-383px; visibility:hidden; z-index:20000; WIDTH: 180px; border:1px solid #9A9A9A; padding:12px; BACKGROUND-COLOR: #ffffff' onmouseover="mvqMOv('panelDiv_iam','img3');" onmouseout="mvqMOu('panelDiv_iam');">
<table width='100%'>
<tr valign=top align=left><td width=30% class='sngPst'>
<div ><a href='http://www.oracle.com/technetwork/java' class='sngPst' onclick="navTrack('ocom','en','header','javadeveloper');">Java Developer</a></div>
<div ><a href='http://www.oracle.com/technetwork/dbadev' class='sngPst' onclick="navTrack('ocom','en','header','databaseadminsanddevelopers');">Database Admins and Developers</a></div>
<div ><a href='http://www.oracle.com/technetwork/systems' class='sngPst' onclick="navTrack('ocom','en','header','systemadminsanddevelopers');">System Admins and Developers</a></div>
<div ><a href='http://www.oracle.com/technetwork/architect' class='sngPst' onclick="navTrack('ocom','en','header','architect');">Architect</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>C-Level Executives</b></a></div>
<div ><a href='http://oraclecfo.com' class='sngPst' onclick="navTrack('ocom','en','header','chieffinancialofficer(cfo)');">Chief Financial Officer (CFO)</a></div>
<div ><a href='http://oraclecio.com' class='sngPst' onclick="navTrack('ocom','en','header','chiefinformationofficer(cio)');">Chief Information Officer (CIO)</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Other Roles</b></a></div>
<div ><a href='http://www.oracle.com/corporate/analyst/index.html' class='sngPst' onclick="navTrack('ocom','en','header','analyst');">Analyst</a></div>
<div ><a href='http://www.oracle.com/corporate/investor_relations/index.html' class='sngPst' onclick="navTrack('ocom','en','header','investor');">Investor</a></div>
<div ><a href='http://www.oracle.com/corporate/employment/index.html' class='sngPst' onclick="navTrack('ocom','en','header','jobseeker');">Job Seeker</a></div>
<div ><a href='http://www.oracle.com/partners/index.htm' class='sngPst' onclick="navTrack('ocom','en','header','partner');">Partner</a></div>
<div ><a href='http://www.oracle.com/us/products/applications/peoplesoft-enterprise/index.html' class='sngPst' onclick="navTrack('ocom','en','header','peoplesoftcustomer');">PeopleSoft Customer</a></div>
<div ><a href='http://www.oracle.com/siebel/index.html' class='sngPst' onclick="navTrack('ocom','en','header','siebelcustomer');">Siebel Customer</a></div>
<div ><a href='http://www.oracle.com/us/sun/index.html' class='sngPst' onclick="navTrack('ocom','en','header','suncustomer');">Sun Customer</a></div>
<div ><a href='https://academy.oracle.com/' class='sngPst' onclick="navTrack('ocom','en','header','student');">Student</a></div>
<div ><a href='http://www.oracle.com/us/solutions/midsize/index.html' class='sngPst' onclick="navTrack('ocom','en','header','midsizecompany');">Midsize Company</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b></b></a></div>
<tr><td></td></tr>
</table>
</div>
<!--SS_END_SNIPPET(fragment53,ocom translation)-->
<!--SS_BEGIN_SNIPPET(fragment54,ocom translation)--> <!--** retrieve cache lifespan parameter: **-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
<!-- User Category SC code -->
<!-- User Interest SC code -->
<a href='#' class='legalese' onMouseOver="mvqMOv('panelDiv_iwanto','img4');" onMouseOut="mvqMOu('panelDiv_iwanto');">I want to...<img src='http://www.oracleimg.com/ocom/groups/public/documents/digitalasset/dropdown-arrow-new.gif' style='margin-left: 4px;' border='0' id='img4'></a>
<div id='panelDiv_iwanto' style='position:absolute;right:50%; margin-right:-383px; visibility:hidden; z-index:20000; WIDTH: 180px; border:1px solid #9A9A9A; padding:12px; BACKGROUND-COLOR: #ffffff' onmouseover="mvqMOv('panelDiv_iwanto','img4');" onmouseout="mvqMOu('panelDiv_iwanto');">
<table width=100%>
<tr valign=top align=left><td width=30% class='sngPst'>
<div><b>Support</b></a></div>
<div ><a href='https://support.oracle.com/CSP/ui/flash.html#tab=SRHome(page=SRHome&id=g1txr1mm())' class='sngPst' onclick="navTrack('ocom','en','header','createorupdateservicerequest');">Create or Update Service Request</a></div>
<div ><a href='https://support.oracle.com/CSP/ui/flash.html#tab=KBHome(page=KBHome&id=g1txk01p())' class='sngPst' onclick="navTrack('ocom','en','header','searchsupportknowledgedatabase');">Search Support Knowledge Database</a></div>
<div ><a href='https://support.oracle.com/CSP/ui/flash.html#tab=PatchHomePage%28page=PatchHomePage&id=g1ws8maj%28%29%29' class='sngPst' onclick="navTrack('ocom','en','header','downloadpatches');">Download Patches</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Education</b></a></div>
<div ><a href='http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=3' class='sngPst' onclick="navTrack('ocom','en','header','findoracleuniversitytraining');">Find Oracle University Training</a></div>
<div ><a href='http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=141' class='sngPst' onclick="navTrack('ocom','en','header','chooseanoraclecertificationpath');">Choose an Oracle Certification Path</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Partner</b></a></div>
<div ><a href='http://solutions.oracle.com/' class='sngPst' onclick="navTrack('ocom','en','header','findapartnersolution');">Find a Partner Solution</a></div>
<div ><a href='http://www.oracle.com/partners/secure/development/order-technology-software/' class='sngPst' onclick="navTrack('ocom','en','header','accesssoftwareandtechnicalsupport');">Access Software and Technical Support</a></div>
<div ><a href='http://opnevents.oracle.com/' class='sngPst' onclick="navTrack('ocom','en','header','attendapartner-onlyevent');">Attend a Partner-Only Event</a></div>
<div ><a href='http://www.oracle.com/partners/en/most-popular-resources/enablement-028916.htm' class='sngPst' onclick="navTrack('ocom','en','header','attendtraining');">Attend Training</a></div>
<div ><a href='http://www.oracle.com/partners/secure/marketing/download-logos/' class='sngPst' onclick="navTrack('ocom','en','header','downloadlogos');">Download Logos</a></div>
<div ><a href='http://solutions.oracle.com/portal/page/portal/OPN/sol_cat_wrapper/' class='sngPst' onclick="navTrack('ocom','en','header','managesolutionscatalog');">Manage Solutions Catalog</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b>Other Tasks</b></a></div>
<div ><a href='https://shop.oracle.com' class='sngPst' onclick="navTrack('ocom','en','header','purchaseoracleproductsonline');">Purchase Oracle Products Online</a></div>
<div ><a href='http://www.oracle.com/technetwork/indexes/documentation/index.html' class='sngPst' onclick="navTrack('ocom','en','header','browseoracledocumentation');">Browse Oracle Documentation</a></div>
<div ><a href='http://www.oracle.com/pls/db92/db92.federated_search' class='sngPst' onclick="navTrack('ocom','en','header','searchoracledocumentation');">Search Oracle Documentation</a></div>
<div ><a href='http://www.oracle.com/corporate/investor_relations/index.html' class='sngPst' onclick="navTrack('ocom','en','header','checkoracleearnings');">Check Oracle Earnings</a></div>
<div ><a href='http://www.oracle.com/corporate/pricing/pricelists.html' class='sngPst' onclick="navTrack('ocom','en','header','checkoraclepricelists');">Check Oracle Price Lists</a></div>
<div ><a href='http://www.oracle.com/technetwork/indexes/downloads/index.html' class='sngPst' onclick="navTrack('ocom','en','header','downloadoraclesoftware');">Download Oracle Software</a></div>
<div ><a href='http://apex.oracle.com/pls/otn/f?p=19297:3:2579654746979599' class='sngPst' onclick="navTrack('ocom','en','header','findanoracleace');">Find an Oracle ACE</a></div>
<div ><a href='http://www.oracle.com/us/solutions/performance-scalability/index.html' class='sngPst' onclick="navTrack('ocom','en','header','vieworaclebenchmarks');">View Oracle Benchmarks</a></div>
<div style='padding-bottom:10px;'><!--spacer--></div>
<div ><b></b></a></div>
</td></tr>
<tr><td></td></tr>
</table>
</div>
<!--SS_END_SNIPPET(fragment54,ocom translation)-->
</div>
<!--SS_BEGIN_SNIPPET(fragment55,1)--> <div style="WIDTH: 173px; FLOAT: left; clear:right;">
<!--search text box -->
<div class="search_position" id="img5">
<form name="searchForm" onSubmit="javascript: return isNotNull(this.q.value)" method="get" action="http://search.oracle.com/search/search">
<input name="start" value="1" type="hidden">
<input type="hidden" value="all" name="search_p_main_operator">
<div id="serch_txtbox">
<div class="search_text">
<a onmouseout="mvqMOu('panelDiv_search')" onclick="mvqMOv('panelDiv_search','img5');" href="#"><img src="/ocom/groups/systemobject/@mktg_admin/documents/digitalasset/search-filter-btn.png" /></a>
</div>
<div class="textbg">
<input id="txtSearch" class="textcnt" name="q" onClick="javascript:if(!isUserInput) {document.searchForm.q.value='';}" onKeyDown="javascript:isUserInput=true;" value="Secure Search"/>
</div>
<div class="search_button">
<a onClick="javascript: return isNotNull(document.searchForm.q.value)" href="javascript:document.searchForm.submit()"><img src="/ocom/groups/systemobject/@mktg_admin/documents/digitalasset/search-icon.gif" /></a>
</div>
</div><!--start sugession -->
<div id="panelDiv_search" onMouseOver="mvqMOv('panelDiv_search','img5');" onMouseOut="mvqMOu('panelDiv_search')";>
<div class="TopleftCurv"></div>
<div class="centerTop"></div>
<div class="ToprightCurv"></div>
<div class="contentBg"> <strong>Filters:</strong>
<div style="padding-bottom:5px; *padding-bottom:1px;"></div>
<ul>
<li><input value="All" type="radio" name="group" /> All</li>
<li><input value="Blogs" type="radio" name="group" /> Blogs</li>
<li><input value="Corporate Site" type="radio" name="group" checked="checked" /> Corporate Site</li>
<li><input value="CRM On Demand" type="radio" name="group" /> CRM On Demand</li>
<li><input value="Discussion Forums" type="radio" name="group" /> Discussion Forums</li>
<li><input value="Documentation" type="radio" name="group" /> Documentation</li>
<li><input value="Education" type="radio" name="group" /> Education</li>
<li><input value="Java.com" type="radio" name="group" /> Java.com</li>
<li><input value="JavaOne and Oracle Develop" type="radio" name="group" /> JavaOne and Oracle Develop</li>
<li><input value="MySQL" name="group" type="radio"> MySQL</li>
<li><input value="Oracle OpenWorld" type="radio" name="group" /> Oracle OpenWorld</li>
<li><input value="PartnerNetwork" type="radio" name="group" /> PartnerNetwork</li>
<li><input value="Sun Defects" name="group" type="radio"> Sun Defects</li>
<li><input value="Technology Network" type="radio" name="group" /> Technology Network</li>
<li><input value="Video and Multimedia" type="radio" name="group" /> Video and Multimedia</li>
</ul>
</div>
<div class="BottomleftCurv"></div>
<div class="centerBottom"></div>
<div class="BottomrightCurv"></div>
</div>
</form>
</div>
<div id="errtxtSearch"></div><!--End Sugession -->
</div>
<!--SS_END_SNIPPET(fragment55,1)-->
</div>
<!--SS_BEGIN_SNIPPET(fragment56,1)-->
<!--**override root for testing purposes:**-->
<!--** Header Logo ** -->
<!--** Header Search ** -->
<!--** Welcome SignIn ** -->
<!--** Footer ** -->
<!--** Header Logo ** -->
<!-- MOSAIC -->
<!-- Communities-->
<!-- User Category -->
<!-- User Intrest -->
<!-- Navigation starts here -->
<!-- User Community SC code -->
<!-- User Category SC code -->
<!-- User Interest SC code -->
<ul id="navigation" class="menu">
<li class="top-level" id="left_cap">
<p class="homebutton"><a href="http://www.oracle.com/us/products/index.html" onclick="navTrack('ocom','en','hnav','productsandservices');"><span>Products and Services</span></a></p>
<div class="submenu three-columns" style="margin-left:0px;">
<div class="left-column">
<dl>
<dt><a href="http://www.oracle.com/us/products/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products');">Products</a></dt>
<dd><a href="http://www.oracle.com/us/products/database/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:productsdatabase');">Oracle Database</a></dd>
<dd><a href="http://www.oracle.com/us/products/middleware/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:fusionmiddleware');">Oracle Fusion Middleware</a></dd>
<dd><a href="http://www.oracle.com/us/products/applications/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:productsapplications');">Oracle Applications</a></dd>
<dd><a href="http://www.oracle.com/us/products/servers-storage/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:infrastructure');">Server and Storage Systems</a></dd>
<dd><a href="http://www.oracle.com/us/products/tools/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:tools');">Development Tools</a></dd>
<dd><a href="http://www.oracle.com/us/products/ondemand/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:oracleondemand');">Oracle On Demand</a></dd>
<dd><a href="http://crmondemand.oracle.com/en/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:oraclecrmondemand');">Oracle CRM On Demand</a></dd>
<dd><a href="http://www.oracle.com/us/products/productslist/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:products:productslist');">Products A-Z List</a></dd>
</dl>
<dl>
<dt>Solutions</dt>
<dd><a href="http://www.oracle.com/us/technologies/java/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:solutions:java');">Java</a></dd>
<dd><a href="http://www.oracle.com/us/solutions/ent-performance-bi/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:solutions:bussinessIntelligence');">Business Intelligence</a></dd>
<dd><a href="http://www.oracle.com/us/solutions/ent-performance-bi/index.html" onclick="navTrack('ocom','en','hnav','productsandservices:solutions:EntPerformancemangement');">Enterprise Performance <br>Management</a></dd>
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Chameleon
Robert Yung yung@sun.comOverall objective:
To demonstrate the feasibility of a processor-independent Sun system. To provide a platform for heterogeneous multi-processor (MP) system research. To provide a platform for binary translation research.
Objective for FY95
Chameleon was started in the second half of FY95. The Chameleon project has three objectives: Build a PowerPC 604-based MBus card for the "PS-20" system, the chassis of the SPARCstation 20 product. Develop a P1275-compliant OpenBoot Prom 3.0 Implementation. Port a big-endian PPC Solaris to the "PS-20" system.
Description
Chameleon provides the hardware and software components of a non-SPARC based Sun workstation prototype that runs Solaris.
The hardware components of Chameleon are an MBus card containing a PowerPC (PPC) 604 and a IEEE P1275-compliant OpenBoot PROM (OBP) that can be used in an SS20 system to build a non-SPARC Sun workstation. The PowerPC (PPC) MBus card contains a PPC 604 CPU, an Altera PLD that controls the CPU, the external cache and Mbus interface, bus drivers, a PLL clock driver, and two sets of E-cache tag memories. The design is optimized for MP applications: both the internal data cache and the external unified E-cache are configured as write-back. This minimizes the peak bandwidth requirement at the E-cache and Mbus interfaces, and allows usage of slower E-cache SRAMs. Mbus snooping is filtered with two sets of E-cache tags: one for CPU accesses and the second for MBus snooping.
The software components of Chameleon are a big-endian Solaris port to this platform and a native C-compiler. The big-endian PPC Solaris port is descended from the little-endian PPC port SunSoft has done to the PReP platforms. The PReP I/O system is replaced by the Sun4m I/O system of the SS-20 platform.
Accomplishments
The PPC 604-based MBus card is complete. The prototype MBus card is fully functional and works at speed (40Mhz and 50 MHz MBus). The CPU can run at 2X, 3X, or 4X the Mbus frequency. The port of a P1275 OBP (version 3.0) is mostly complete. The big-endian PPC Solaris port is complete, with basic Sun4m driver integration.
Lessons Learned
There are several things we learned in the course of designing the prototype MBus card. In particular, rapid prototyping of full-speed, full-function processor cards is possible with off-the-shelf parts. The easy-to-use MBus and the generic address/data interface of the PPC 604 were very helpful. Some specifics are: The entire design was done in 3-person-months. All components used on the Mbus card except the CPU are off-the-shelf. A PLD/FPGA (plus discrete buffers) offers a realistic alternative to full-custom or gate-array processor interface chips. A single Altera PLD is used to control CPU interface, the external cache and the Mbus interface. This PLD (plus external parts) provides the same functionality as the MXCC in a SPARC Mbus module.
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