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	<title>Comments on: Using 10053</title>
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		<title>By: Jonathan Lewis</title>
		<link>http://jonathanlewis.wordpress.com/2007/01/18/using-10053/#comment-3205</link>
		<dc:creator><![CDATA[Jonathan Lewis]]></dc:creator>
		<pubDate>Thu, 08 Feb 2007 10:36:48 +0000</pubDate>
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		<description><![CDATA[Abhay: Metalink has some notes, search for 10053 under the &lt;em&gt;&lt;strong&gt;&quot;Knowledge Base&quot;&lt;/strong&gt;&lt;/em&gt; area. The first item will (probably) be: &lt;a href=&quot;https://metalink.oracle.com/metalink/plsql/f?p=130:14:10450479715258967513::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,338137.1,1,1,1,helvetica &quot; rel=&quot;nofollow&quot;&gt;this one&lt;/a&gt; which leads on to the &lt;a href=&quot;https://metalink.oracle.com/metalink/plsql/docs/CS_10053.htm&quot; rel=&quot;nofollow&quot;&gt;case study&lt;/a&gt;

For other assistance from the internet check &lt;a href=&quot;http://www.centrexcc.com/A%20Look%20under%20the%20Hood%20of%20CBO%20-%20the%2010053%20Event.pdf&quot; rel=&quot;nofollow&quot;&gt;Wolfgang Breitling&#039;s paper (pdf)&lt;/a&gt;

You could also get &lt;a href=&quot;http://www.jlcomp.demon.co.uk/cbo_book/ind_book.html&quot; rel=&quot;nofollow&quot;&gt;my book&lt;/a&gt;, which has a sample walkthrough of a 4-table join in chapter 14.

Be aware of this comment from the Oracle pages though: &lt;i&gt;&quot;The 10053 is typically not the best place to start looking for tuning opportunities - the execution plan and TKProf have better information in this regard&quot;&lt;/i&gt;]]></description>
		<content:encoded><![CDATA[<p>Abhay: Metalink has some notes, search for 10053 under the <em><strong>&#8220;Knowledge Base&#8221;</strong></em> area. The first item will (probably) be: <a href="https://metalink.oracle.com/metalink/plsql/f?p=130:14:10450479715258967513::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,338137.1,1,1,1,helvetica " rel="nofollow">this one</a> which leads on to the <a href="https://metalink.oracle.com/metalink/plsql/docs/CS_10053.htm" rel="nofollow">case study</a></p>
<p>For other assistance from the internet check <a href="http://www.centrexcc.com/A%20Look%20under%20the%20Hood%20of%20CBO%20-%20the%2010053%20Event.pdf" rel="nofollow">Wolfgang Breitling&#8217;s paper (pdf)</a></p>
<p>You could also get <a href="http://www.jlcomp.demon.co.uk/cbo_book/ind_book.html" rel="nofollow">my book</a>, which has a sample walkthrough of a 4-table join in chapter 14.</p>
<p>Be aware of this comment from the Oracle pages though: <i>&#8220;The 10053 is typically not the best place to start looking for tuning opportunities &#8211; the execution plan and TKProf have better information in this regard&#8221;</i></p>
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		<title>By: Abhay</title>
		<link>http://jonathanlewis.wordpress.com/2007/01/18/using-10053/#comment-3204</link>
		<dc:creator><![CDATA[Abhay]]></dc:creator>
		<pubDate>Thu, 08 Feb 2007 07:05:05 +0000</pubDate>
		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/2007/01/18/using-10053/#comment-3204</guid>
		<description><![CDATA[need to understand event 10053]]></description>
		<content:encoded><![CDATA[<p>need to understand event 10053</p>
]]></content:encoded>
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