January 2012
Intermediate to advanced
542 pages
11h 28m
English
Content preview from Oracle Database 11gR2 Performance Tuning CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. Optimizing SQL Code
In this chapter, we will cover the following topics:
- Using bind variables
- Avoiding full table scans
- Exploring index lookup
- Exploring index skip-scan and index range-scan
- Introducing arrays and bulk operations
- Optimizing joins
- Using subqueries
- Tracing SQL activity with SQL Trace and TKPROF
Introduction
In this chapter, we will see how to diagnose and solve typical performance problems caused by poorly written SQL code. We will inspect both queries and Data Manipulation Language (DML), starting with the correct use of bind variables in the first recipe.
This chapter will illustrate various aspects related to SQL code, providing solutions to the most common issues. We will see how to avoid full table scans, when possible,using ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.