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	<title>Square DBA - Oracle DBA Talk</title>
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	<link>http://www.squaredba.com</link>
	<description>Oracle DBA Forum, Articles, FAQs, Scripts, OCP Test Papers, Free Blog, DBA Training</description>
	<pubDate>Tue, 11 Nov 2008 21:25:18 +0000</pubDate>
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		<title>RAID and Oracle</title>
		<link>http://www.squaredba.com/raid-and-oracle-25.html</link>
		<comments>http://www.squaredba.com/raid-and-oracle-25.html#comments</comments>
		<pubDate>Tue, 11 Nov 2008 21:25:18 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle Articles]]></category>

		<category><![CDATA[5]]></category>

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

		<category><![CDATA[raid 0]]></category>

		<category><![CDATA[raid 1]]></category>

		<category><![CDATA[raid 50]]></category>

		<guid isPermaLink="false">http://www.squaredba.com/?p=25</guid>
		<description><![CDATA[RAID is the acronym for Redundant Arrays of Inexpensive Disks, and there are many different types or RAID (called RAID “levels”), and each has its own relative advantages and disadvantages. For Oracle9i databases, many of the RAID schemes do not posses the high performance required for an Oracle database, and moist Oracle professionals choose a [...]]]></description>
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		<item>
		<title>Changing the location of trace files</title>
		<link>http://www.squaredba.com/changing-the-location-of-trace-files-23.html</link>
		<comments>http://www.squaredba.com/changing-the-location-of-trace-files-23.html#comments</comments>
		<pubDate>Tue, 11 Nov 2008 18:42:55 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle Tip]]></category>

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

		<category><![CDATA[trace file]]></category>

		<guid isPermaLink="false">http://www.squaredba.com/?p=23</guid>
		<description><![CDATA[The location of Oracle trace and log files can be changed.  I normally recommend leaving them in the default location, but there are reasons to put them somewhere else. In SQLPlus type:
show parameter
This will display all of the non-hidden parameters.  Generally any of these can be modified with a ALTER SYSTEM or ALTER DATABASE.  Remember [...]]]></description>
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		<item>
		<title>When is ROWNUM evaluated?</title>
		<link>http://www.squaredba.com/when-is-rownum-evaluated-21.html</link>
		<comments>http://www.squaredba.com/when-is-rownum-evaluated-21.html#comments</comments>
		<pubDate>Wed, 05 Nov 2008 21:44:59 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle Tip]]></category>

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

		<guid isPermaLink="false">http://www.squaredba.com/?p=21</guid>
		<description><![CDATA[I had someone ask me today when is ROWNUM evaluated?  Is it before the WHERE clause?  How about before or after the GROUP BY clause?  The answer is pretty simple.
ROWNUM is a pseudo-column that returns a row&#8217;s position in a result set. ROWNUM is evaluated AFTER records are selected from the database and BEFORE any [...]]]></description>
		<wfw:commentRss>http://www.squaredba.com/when-is-rownum-evaluated-21.html/feed</wfw:commentRss>
		</item>
		<item>
		<title>Moving tables to a new tablespace</title>
		<link>http://www.squaredba.com/moving-tables-to-a-new-tablespace-20.html</link>
		<comments>http://www.squaredba.com/moving-tables-to-a-new-tablespace-20.html#comments</comments>
		<pubDate>Tue, 09 Sep 2008 17:03:05 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle How-To]]></category>

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

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

		<guid isPermaLink="false">http://www.squaredba.com/?p=20</guid>
		<description><![CDATA[Need to move a table to a new tablespace?  That is just what I needed to do today.  I have a couple if hot datafiles that I need to relieve the load on.  Basically I have one staging tablespace for loading and manipulating data beforethe data is moved to the production tables.  I have several [...]]]></description>
		<wfw:commentRss>http://www.squaredba.com/moving-tables-to-a-new-tablespace-20.html/feed</wfw:commentRss>
		</item>
		<item>
		<title>Locating the Oracle Database Version</title>
		<link>http://www.squaredba.com/locating-the-oracle-database-version-19.html</link>
		<comments>http://www.squaredba.com/locating-the-oracle-database-version-19.html#comments</comments>
		<pubDate>Mon, 28 Jul 2008 16:26:15 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle Tip]]></category>

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

		<guid isPermaLink="false">http://www.squaredba.com/?p=19</guid>
		<description><![CDATA[Ever need to know what version your database is running?  Well as the DBA you should already know.  I also know what major version I am running on all of my instances, however I am not always shure what patchset I am running.  To look it up it is pretty simple.
SQL&#62; SELECT * FROM SYS.V_$VERSION;
or
SQL&#62; [...]]]></description>
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		<item>
		<title>GTD Tasks in Outlook</title>
		<link>http://www.squaredba.com/gtd-tasks-in-outlook-18.html</link>
		<comments>http://www.squaredba.com/gtd-tasks-in-outlook-18.html#comments</comments>
		<pubDate>Wed, 16 Jul 2008 17:49:46 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[DBA Thoughts]]></category>

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

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

		<guid isPermaLink="false">http://www.squaredba.com/?p=18</guid>
		<description><![CDATA[As I have posted before I am always looking to streamline my to-do lists.  I think I have come up with the ultimate solution (at least for me).  Anything I use must sync with Outlook.  We use MS Exchange here at work.  People send me tasks through Outlook and I receive Outlook tasks from our [...]]]></description>
		<wfw:commentRss>http://www.squaredba.com/gtd-tasks-in-outlook-18.html/feed</wfw:commentRss>
		</item>
		<item>
		<title>Stupid Errors</title>
		<link>http://www.squaredba.com/stupid-errors-17.html</link>
		<comments>http://www.squaredba.com/stupid-errors-17.html#comments</comments>
		<pubDate>Thu, 10 Jul 2008 16:56:37 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[DBA Thoughts]]></category>

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

		<category><![CDATA[ORA-01722]]></category>

		<category><![CDATA[ORA-12801]]></category>

		<guid isPermaLink="false">http://www.squaredba.com/stupid-errors-17.html</guid>
		<description><![CDATA[Stupid errors are always the most frustrating.  Today while running a SQL statement for an adhoc report I received a “ORA-12801: error signaled in parallel query server P050” followed by “ORA-01722: invalid number”.  I knew the invalid number error was the real culprit and not the parallel query error.  The statement runs for 15 minutes [...]]]></description>
		<wfw:commentRss>http://www.squaredba.com/stupid-errors-17.html/feed</wfw:commentRss>
		</item>
		<item>
		<title>Need help with Oracle?</title>
		<link>http://www.squaredba.com/need-help-with-oracle-16.html</link>
		<comments>http://www.squaredba.com/need-help-with-oracle-16.html#comments</comments>
		<pubDate>Wed, 09 Jul 2008 22:40:55 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Site News]]></category>

		<category><![CDATA[oracle help]]></category>

		<guid isPermaLink="false">http://www.squaredba.com/need-help-with-oracle-16.html</guid>
		<description><![CDATA[Do you need help with Oracle ?  I am offering to help with your Oracle database issues.  Why?  Well I enjoy helping others, I find that I sharpen my skills when I need to teach others, and help bring traffic to this website.  If you have a question feel free to post it on my [...]]]></description>
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		</item>
		<item>
		<title>Shrink table segment that experienced large delete</title>
		<link>http://www.squaredba.com/shrink-table-segment-that-experienced-large-delete-15.html</link>
		<comments>http://www.squaredba.com/shrink-table-segment-that-experienced-large-delete-15.html#comments</comments>
		<pubDate>Sun, 06 Jul 2008 01:03:26 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle Articles]]></category>

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

		<guid isPermaLink="false">http://www.squaredba.com/shrink-table-segment-that-experienced-large-delete-15.html</guid>
		<description><![CDATA[Segments that undergo significant data manipulation language (DML) activity, such as UPDATE and DELETE operations, can become sparsely populated, with chunks of free space within their data blocks. Besides simply wasting space, sparsely populated segments can also lead to poor performance, because operations such as a full table scan will need to scan more blocks [...]]]></description>
		<wfw:commentRss>http://www.squaredba.com/shrink-table-segment-that-experienced-large-delete-15.html/feed</wfw:commentRss>
		</item>
		<item>
		<title>Rebuild indexes &#038; gather statistics after table shrink.</title>
		<link>http://www.squaredba.com/rebuild-indexes-gather-statistics-after-table-shrink-14.html</link>
		<comments>http://www.squaredba.com/rebuild-indexes-gather-statistics-after-table-shrink-14.html#comments</comments>
		<pubDate>Sun, 06 Jul 2008 00:47:00 +0000</pubDate>
		<dc:creator>Matt</dc:creator>
		
		<category><![CDATA[Oracle Tip]]></category>

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

		<guid isPermaLink="false">http://www.squaredba.com/?p=14</guid>
		<description><![CDATA[Just a quick tip.  When you finish a table segment shrink, it is a good practice to rebuild any indexes on that table as well as gather statistics on that table. These tasks help Oracle to create a better execution plan for the SQL query related to the table.
]]></description>
		<wfw:commentRss>http://www.squaredba.com/rebuild-indexes-gather-statistics-after-table-shrink-14.html/feed</wfw:commentRss>
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