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	<title>Oracle Scratchpad</title>
	<atom:link href="http://jonathanlewis.wordpress.com/feed/" rel="self" type="application/rss+xml" />
	<link>http://jonathanlewis.wordpress.com</link>
	<description>Just another Oracle weblog</description>
	<pubDate>Tue, 01 Jul 2008 21:23:11 +0000</pubDate>
	<generator>http://wordpress.org/?v=MU</generator>
	<language>en</language>
			<item>
		<title>Ancient History</title>
		<link>http://jonathanlewis.wordpress.com/2008/07/01/ancient-history/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/07/01/ancient-history/#comments</comments>
		<pubDate>Tue, 01 Jul 2008 21:23:11 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Infrastructure]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=387</guid>
		<description><![CDATA[I&#8217;ve just been browsing through a subdirectory on my laptop that has been copied from machine to machine over the years - even though some of the material needs programs that probably don&#8217;t exist any more.
This slide, from a presentation I gave at the UKOUG annual conference in 1996, raised a wry smile. The title [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/07/01/ancient-history/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>

		<media:content url="http://jonathanlewis.files.wordpress.com/2008/07/ts_fragmentation.png" medium="image" />
	</item>
		<item>
		<title>Blog Roll</title>
		<link>http://jonathanlewis.wordpress.com/2008/06/17/blog-roll/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/06/17/blog-roll/#comments</comments>
		<pubDate>Tue, 17 Jun 2008 19:28:02 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=381</guid>
		<description><![CDATA[I&#8217;ve added a couple of entries to my link list recently, so I thought I&#8217;d give them a quick mention in case you hadn&#8217;t noticed them.
Alberto Dell&#8217;Era - Lots of material about optimizer join costing, and now a growing collection of interesting pl/sql packages.
ASHMasters - Kyle Hailey, Graham Wood, John Beresniewicz: some of the big [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/06/17/blog-roll/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Event snapshots</title>
		<link>http://jonathanlewis.wordpress.com/2008/06/15/event-snapshots/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/06/15/event-snapshots/#comments</comments>
		<pubDate>Sun, 15 Jun 2008 20:13:24 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Performance]]></category>

		<category><![CDATA[Troubleshooting]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=378</guid>
		<description><![CDATA[[Back to part 2]
Some time ago I wrote a note about using dbms_lock() to slow down your SQL, and followed up with an example of using this type of code to help with trouble-shooting.
One of the most useful views I&#8217;ve used this trick on is v$event_histogram - the view which gives you a more detailed [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/06/15/event-snapshots/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Recent SQL</title>
		<link>http://jonathanlewis.wordpress.com/2008/06/13/recent-sql/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/06/13/recent-sql/#comments</comments>
		<pubDate>Fri, 13 Jun 2008 17:01:10 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Troubleshooting]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=376</guid>
		<description><![CDATA[If you&#8217;re doing a little casual trouble-shooting, it&#8217;s always worth an occasional browse through v$sql just on the off-chance that you&#8217;ll find some sort of resource hog that could do with a little fixing.
There are many ways to slice and dice your way through v$sql, but here&#8217;s one that I often use when asked to [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/06/13/recent-sql/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Firefox</title>
		<link>http://jonathanlewis.wordpress.com/2008/06/10/firefox/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/06/10/firefox/#comments</comments>
		<pubDate>Tue, 10 Jun 2008 14:53:06 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=374</guid>
		<description><![CDATA[Here&#8217;s an interesting URL that I found by following an incoming link a little while ago.
If you run Firefox as your web browser, this &#8220;Customizegoogle&#8221; add-in allows you to &#8220;filter spammy websites from search results&#8221;. (It&#8217;s got a lot of other features, but this one seems likely to be the most useful to Oracle users).
I&#8217;ve [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/06/10/firefox/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Scientific Method</title>
		<link>http://jonathanlewis.wordpress.com/2008/06/08/scientific-method/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/06/08/scientific-method/#comments</comments>
		<pubDate>Sun, 08 Jun 2008 21:53:53 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=373</guid>
		<description><![CDATA[I&#8217;ve finally found out why I seem to disagree with Don Burleson more frequently that I do with other people on the internet.
From a recent OTN thread:
Me: &#8220;you&#8217;re supposed to design a theory to match the facts, not select the facts to match the theory.&#8221;
Burleson: &#8220;I think it&#8217;s the other way around, Jonathan, the scientific [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/06/08/scientific-method/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
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	</item>
		<item>
		<title>Advert - New Book</title>
		<link>http://jonathanlewis.wordpress.com/2008/06/05/advert-new-book/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/06/05/advert-new-book/#comments</comments>
		<pubDate>Thu, 05 Jun 2008 16:02:21 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=370</guid>
		<description><![CDATA[I posted an early warning about Christian Antognini&#8217;s new book some time back.  Well, it&#8217;s now on the shelves. For more details, see this URL to read the forewords that Cary Millsap and I supplied
If you&#8217;re waiting for volume 2 of my Cost Based Oracle series, then this is the book you should get to [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/06/05/advert-new-book/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Nothing Changed</title>
		<link>http://jonathanlewis.wordpress.com/2008/05/30/nothing-changed/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/05/30/nothing-changed/#comments</comments>
		<pubDate>Fri, 30 May 2008 10:42:07 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[CBO]]></category>

		<category><![CDATA[Performance]]></category>

		<category><![CDATA[Statistics]]></category>

		<category><![CDATA[Tuning]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=369</guid>
		<description><![CDATA[The following request appeared on the Oracle Forum a few days ago:
I have a select query
select col1,col2,col3 from table1 order by col1,col3
This table contains 4.5 million records initially and the select was returning records in less than 2 minutes .
This query has been running for the last year with out any issues, but from last [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/05/30/nothing-changed/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Best Practices</title>
		<link>http://jonathanlewis.wordpress.com/2008/05/16/best-practices/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/05/16/best-practices/#comments</comments>
		<pubDate>Fri, 16 May 2008 19:26:55 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=368</guid>
		<description><![CDATA[This is a note that I wrote for the Northern California Oracle User Group a few months ago. It was published in the February issue of the magazine in the section &#8220;Ask the Oracles&#8221;, an interesting and innovative section that I first contributed to in August 2006 with a note on hints.
The topic under discussion [...]]]></description>
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		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
		</media:content>
	</item>
		<item>
		<title>Index Efficiency</title>
		<link>http://jonathanlewis.wordpress.com/2008/05/14/index-efficiency/</link>
		<comments>http://jonathanlewis.wordpress.com/2008/05/14/index-efficiency/#comments</comments>
		<pubDate>Wed, 14 May 2008 21:30:24 +0000</pubDate>
		<dc:creator>Jonathan Lewis</dc:creator>
		
		<category><![CDATA[Infrastructure]]></category>

		<category><![CDATA[Performance]]></category>

		<category><![CDATA[Troubleshooting]]></category>

		<guid isPermaLink="false">http://jonathanlewis.wordpress.com/?p=367</guid>
		<description><![CDATA[I was looking for an old posting on the Oracle newsgroup recently, when I found a set of posts that talked about measuring the effectiveness of rebuilding some indexes.
I had contributed by pointing to my website where I have a script that demonstrates how to get some detailed information about how well the space in [...]]]></description>
		<wfw:commentRss>http://jonathanlewis.wordpress.com/2008/05/14/index-efficiency/feed/</wfw:commentRss>
	
		<media:content url="http://a.wordpress.com/avatar/jonathanlewis-128.jpg" medium="image">
			<media:title type="html">Jonathan Lewis</media:title>
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