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	<title>Engin Zorlu Oracle Blog</title>
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	<description>The hardest problem is to find out the simplest solution.</description>
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		<title>Engin Zorlu Oracle Blog</title>
		<link>http://zengin.wordpress.com</link>
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			<item>
		<title>SQL WorkShop About Oracle Architecture</title>
		<link>http://zengin.wordpress.com/2008/12/04/sql-workshop-about-oracle-architecture/</link>
		<comments>http://zengin.wordpress.com/2008/12/04/sql-workshop-about-oracle-architecture/#comments</comments>
		<pubDate>Thu, 04 Dec 2008 00:23:18 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[Oracle Documentation]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/?p=214</guid>
		<description><![CDATA[&#8211; DataBase Version : Oracle XE 10g
&#8211; Startup and shutdown database
&#8211; Create database
&#8211; Control files
&#8211; Redo log files
&#8211; Table spaces and data files
&#8211; Rollback segments
&#8211; Temporary segments

SQL &#62; conn sys/pswd as sysdba;
&#8211; I prefer to shutdown immediate =)
SQL &#62;SHUTDOWN ABORT
SQL &#62;SHUTDOWN IMMEDIATE
SQL &#62;SHUTDOWN NORMAL
SQL &#62;SHUTDOWN TRANSACTIONAL
SQL &#62;STARTUP PFILE='filepath/initXE.ora'

SQL &#62;CREATE DATABASE BD1
 MAXLOGFILES 5
 MAXLOGMEMBERS 5
 [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=214&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2008/12/04/sql-workshop-about-oracle-architecture/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
		</media:content>
	</item>
		<item>
		<title>SQL Trace and TKPROF</title>
		<link>http://zengin.wordpress.com/2008/11/23/sql-trace-and-tkprof/</link>
		<comments>http://zengin.wordpress.com/2008/11/23/sql-trace-and-tkprof/#comments</comments>
		<pubDate>Sun, 23 Nov 2008 20:12:53 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[Performance Tuning]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/?p=192</guid>
		<description><![CDATA[&#8211; start sql trace to the session.
set session for trace sql
alter session set timed_statistics = true;
alter session set sql_trace = true;
alter session set max_dump_file_size =unlimited;
alter session set STATISTICS_LEVEL = ALL ;
alter session set statistics_level = all ;
alter session set tracefile_identifier = &#8216;pfzerprb&#8217;;
alter session set events &#8216;10046 TRACE NAME CONTEXT FOREVER, LEVEL 8&#8242;;
&#8211;stop sql trace for [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=192&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2008/11/23/sql-trace-and-tkprof/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
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	</item>
		<item>
		<title>Row Numbering and Ranking Functions</title>
		<link>http://zengin.wordpress.com/2008/11/14/row-numbering-ranking-functions-1/</link>
		<comments>http://zengin.wordpress.com/2008/11/14/row-numbering-ranking-functions-1/#comments</comments>
		<pubDate>Fri, 14 Nov 2008 23:16:47 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[SQL Reference]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/?p=100</guid>
		<description><![CDATA[1. ROWNUM without Analytic Function
select employee_id, name , salary, ROWNUM
from employees ORDER BY salary;exec

2. ROW_NUMBER ( )


select employee_id, name, salary, ROW_NUMBER() OVER (ORDER BY salary  )toprank
FROM employees;exec
3. RANK ( )
select employee_id, name, salary, RANK() OVER (ORDER BY salary )toprank
FROM employees;exec
4. DENSE_RANK ( ) with WHERE clause

select * from
( select employee_id, name, salary, DENSE_RANK() OVER (ORDER [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=100&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2008/11/14/row-numbering-ranking-functions-1/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
		</media:content>
	</item>
		<item>
		<title>Case expression in sql</title>
		<link>http://zengin.wordpress.com/2007/09/24/case-expression-in-sql/</link>
		<comments>http://zengin.wordpress.com/2007/09/24/case-expression-in-sql/#comments</comments>
		<pubDate>Mon, 24 Sep 2007 07:44:53 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[SQL Reference]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/09/24/case-expression-in-sql/</guid>
		<description><![CDATA[We can use case expression in PL/SQL basically or as a sql expression to extend query
flexibility.
Basic Sytax :
case when &#60;condition&#62; then &#60;value&#62;
when &#60;condition&#62; then &#60;value&#62;
...
else &#60;value

end

Basic Example :
select sal, case when sal &#60; 2000 then 'low'
                 when sal &#60; [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=76&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2007/09/24/case-expression-in-sql/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
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	</item>
		<item>
		<title>Increase your experience on advanced Apex</title>
		<link>http://zengin.wordpress.com/2007/09/12/increase-your-experience-on-advanced-apex/</link>
		<comments>http://zengin.wordpress.com/2007/09/12/increase-your-experience-on-advanced-apex/#comments</comments>
		<pubDate>Wed, 12 Sep 2007 05:33:52 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[apex]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/09/12/increase-your-experience-on-advanced-apex/</guid>
		<description><![CDATA[We can find the advanced features of Apex in these presentations.
It is necessary increase the expresience to use apex more efficiently.
This is the link of advanced apex presentations.
Presentations
       <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=75&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2007/09/12/increase-your-experience-on-advanced-apex/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
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		<item>
		<title>Open Apex to public</title>
		<link>http://zengin.wordpress.com/2007/09/10/open-apex-to-public/</link>
		<comments>http://zengin.wordpress.com/2007/09/10/open-apex-to-public/#comments</comments>
		<pubDate>Mon, 10 Sep 2007 05:55:59 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[apex]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/09/10/open-apex-to-public/</guid>
		<description><![CDATA[By default, apex just works on localhost,
it is not possible to share your applications with grid control by default.
Use this process to open apex to pubklic:
begin
DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);
COMMIT ;
end;
       <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=74&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2007/09/10/open-apex-to-public/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
		</media:content>
	</item>
		<item>
		<title>Upgrade to APEX 3.0 on Oracle 10g r2</title>
		<link>http://zengin.wordpress.com/2007/09/07/upgrade-to-apex-30-on-oracle-10g-r2/</link>
		<comments>http://zengin.wordpress.com/2007/09/07/upgrade-to-apex-30-on-oracle-10g-r2/#comments</comments>
		<pubDate>Fri, 07 Sep 2007 14:04:17 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[apex]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/09/07/upgrade-to-apex-30-on-oracle-10g-r2/</guid>
		<description><![CDATA[Upgrade operations sometimes might be more effortable than we assume.
As Apex 2.0.1 comes with Oracle 10g r2, we need to upgrade apex 3.0 with some
operations.
You can download and install APEX 3.0 from here:
Installing the Oracle Application Express Software
Shortly, you will run apexins.sql with these arguments:
@apexins password SYSAUX SYSAUX TEMP /i/
This steps seems really simple but [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=73&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2007/09/07/upgrade-to-apex-30-on-oracle-10g-r2/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
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	</item>
		<item>
		<title>Introduction to Triggers</title>
		<link>http://zengin.wordpress.com/2007/08/16/introduction-to-triggers/</link>
		<comments>http://zengin.wordpress.com/2007/08/16/introduction-to-triggers/#comments</comments>
		<pubDate>Thu, 16 Aug 2007 23:08:40 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[My Oracle Concepts]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/08/16/introduction-to-triggers/</guid>
		<description><![CDATA[          Triggers are like to the  procedures stored in Java, PL/SQL or call out to a C procedure but these are implicitly implemented by database due to some kinds of database actions:

 a table or view is modified with DML DDL Statements
 some user actions [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=72&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2007/08/16/introduction-to-triggers/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
		</media:content>
	</item>
		<item>
		<title>Heap Tables vs Object Tables</title>
		<link>http://zengin.wordpress.com/2007/07/31/heap-tables-vs-object-tables/</link>
		<comments>http://zengin.wordpress.com/2007/07/31/heap-tables-vs-object-tables/#comments</comments>
		<pubDate>Tue, 31 Jul 2007 22:42:24 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[Performance Tuning]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/07/31/heap-tables-vs-object-tables/</guid>
		<description><![CDATA[Heap table is the default oracle table type.
It is a default table definition as you use:
create table test_table
( no NUMBER(5), name VARCHAR2 (10) );
Object table has an logically object oriented architecture to provide reusable components and complex applications.
Object oriented programming is based on object  types in PL/SQL.
create table t of some_type;
object type example
  [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=68&subd=zengin&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://zengin.wordpress.com/2007/07/31/heap-tables-vs-object-tables/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
		</media:content>
	</item>
		<item>
		<title>Union vs Union All</title>
		<link>http://zengin.wordpress.com/2007/07/31/union-vs-union-all/</link>
		<comments>http://zengin.wordpress.com/2007/07/31/union-vs-union-all/#comments</comments>
		<pubDate>Tue, 31 Jul 2007 21:10:17 +0000</pubDate>
		<dc:creator>enginzorlu</dc:creator>
				<category><![CDATA[Performance Tuning]]></category>

		<guid isPermaLink="false">http://zengin.wordpress.com/2007/07/31/union-vs-union-all/</guid>
		<description><![CDATA[Union and union all operations are used to combine two or more queries in a table.
These queries must have same number of columns and these columns must have similar properties when we compare column by column.
Syntax:
n 
select field1, field2, . field_n
               [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=zengin.wordpress.com&blog=1317876&post=65&subd=zengin&ref=&feed=1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">enginzorlu</media:title>
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