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Access Path Scientific Analysis Part I
If you want to become an access path guru, you’ll need to spend some time learning how optimization parameters, statistics and hints affect SQL access paths and statement performance. This blog will provide you with a few hints and tips to help you begin your scientific analysis of the Oracle optimization process. In upcoming blogs, I’ll provide you with some sample test cases.
Thursday, February 15, 2007
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A quick follow up on the 2007 Daylight Saving Time changes. Since my last blog, I have found some important new information. I’ll also challenge you in this blog with one question – “Are you ready for DST?”.
Monday, February 05, 2007
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We are breaking in to our regularly scheduled blog with the following emergency message: “Are you ready for the impact that the 2007 Daylight Saving Time Changes will have on your Oracle Ecosystems?” I think that after reading this blog, you’ll agree that much work needs to be done to ensure that our systems are able to handle the new Daylight Saving Time dates for 2007.
Monday, January 29, 2007
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A few recommendations from your friendly ex-Oracle instructor on resources that will help you learn more about Oracle access paths. These resources will benefit beginners and tuning gurus alike.
Monday, January 22, 2007
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We continue our discussion on Oracle access path identification. This blog takes an in-depth look at 10G Grid Control’s SQL Details Panels.
Monday, January 15, 2007
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The series on access path identification continues. We’ll review a couple of 9I Oracle Enterprise Manager tools that we can use to identify Oracle access paths. I’ll also show you a couple of beneficial utilities that will help you better understand access paths, monitor database performance and tune statements running in an Oracle 9I database environment.
Monday, January 08, 2007
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Just a quick note to wish everyone a happy holiday and a great New Year. My next blog entry will be January 8th! We'll continue our discussion on access path identification.
Wednesday, December 27, 2006
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We continue our discussion on Oracle access paths. In this blog, we’ll learn about the SQL*PLUS Autotrace utility and everyone’s favorite tracing tool SQL Trace. Since there is an abundance of information available, we’ll cover these tools briefly and I’ll provide you with some great links to learn more.
Monday, December 18, 2006
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Now that we have a firm understanding of Oracle's plan table and V$SQL_PLAN, let's continue our education by learning how to format the raw data contained in these two objects. In addition, we'll also learn how to create graphical access path displays using the raw data as input.
Monday, December 11, 2006
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We continue our series on system triage by learning how to find the access paths our poorly performing queries are taking during execution. In this blog, we’ll review the two data objects that contain the access path raw data - plan_table and v$sql_plan. In addition will review a few of the V$ dynamic performance views that provide information pertaining to SQL statements executing in our Oracle database environment.
Monday, December 04, 2006
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