Oracle Database 11g: SQL Tuning Workshop

Description:

The SQL Tuning Workshop class covers investigative methods that reveal varying levels of detail about how the Oracle database executes a SQL statement. Students learn the different ways in which data can be accessed, which ones are most efficient under specific circumstances, and how to ensure that the best method is used. Partitioning topics are covered, in addition to taking advantage of hints, bind variables, and different types of indexes.

Learn to:

• Identify Poorly Performing SQL
• Understand the Query Optimizer
• Trace applications
• Monitor SQL execution in real time
• Interpret execution plans

Audience:

Application Developers
Data Warehouse Developer
Developer
Technical Consultant
Support Engineer

Objectives:

• Identify problem SQL statements
• Modify a SQL statement to perform at its best
• Trace an application
• Understand how the Query Optimizer makes decisions about how to access data
• Interpret execution plans
• Use optimizer hints effectively
• Generate a load test

Prerequisites:

Required Prerequisites:
Oracle Database 11g: Introduction to SQL

Suggested Prerequisites:
Oracle Database 11g: SQL Fundamentals I

Topics:

Exploring the Oracle Database Architecture
Oracle Database Server Architecture: Overview
Oracle Database Memory Structures: Overview
Background Process Roles
Automatic Shared Memory Management
Automated SQL Execution Memory Management
Automatic Memory Management
Database Storage Architecture
Logical and Physical Database Structures

Introduction to SQL Tuning
Reasons for Inefficient SQL Performance
Performance Monitoring Solutions
Monitoring and Tuning Tools: Overview
EM Performance Pages for Reactive Tuning
CPU and Wait Time Tuning Dimensions
Scalability with Application Design, Implementation, and Configuration
Common Mistakes on Customer Systems
Proactive Tuning Methodology

Introduction to the Optimizer
Structured Query Language
SQL Statement Representation, Implementation & Processing: Overview
SQL Statement Parsing: Overview
Why Do You Need an Optimizer?
Optimization During Hard Parse Operation
Cost-Based Optimizer
Controlling the Behavior of the Optimizer
Optimizer Features and Oracle Database Releases

Optimizer Operators
Row Source Operations
Main Structures and Access Paths
Full Table Scan
Indexes: Overview
Using Indexes: Considering Nullable Columns
Bitmap Indexes, Composite Indexes &Invisible Index
Guidelines for Managing Indexes
Clusters

Interpreting Execution Plans
Execution Plan
Links Between Important Dynamic Performance Views
Automatic Workload Repository (AWR)
Generating SQL Reports from AWR Data
SQL Monitoring: Overview
Reading More Complex Execution Plans
Reviewing the Execution Plan
Looking Beyond Execution Plans

Case Study: Star Transformation
The Star & Snowflake Schema Model
Execution Plan Without Star Transformation
Retrieving Fact Rows from One Dimension All Dimensions
Joining the Intermediate Result Set with Dimensions
Using Bitmap Join Indexes
Star Transformation
Bitmap Join Indexes

Optimizer Statistics
Optimizer Statistics & Types of Optimizer Statistics
Multicolumn Statistics: Overview
Expression Statistics: Overview
Gathering System Statistics
Statistic Preferences: Overview
Optimizer Dynamic Sampling: Overview
Locking Statistics

Using Bind Variables
Cursor Sharing and Different Literal Values
Cursor Sharing and Bind Variables
Bind Variables in SQL*Plus & Enterprise Manager
Cursor Sharing Enhancements
Adaptive Cursor Sharing: Overview
Interacting with Adaptive Cursor Sharing

Using Optimizer Hints
Optimizer Hints: Overview
Types of Hints
Specifying Hints
Rules for Hints
Hint Recommendations
Hint Categories
Optimization Goals and Approaches
Additional Hints

Application Tracing
End-to-End Application Tracing Challenge
Location for Diagnostic Traces
What Is a Service?
Use Services with Client Applications
Trace Your Own Session
SQL Trace File Contents
Formatting SQL Trace Files: Overview
Invoking the tkprof Utility

Automating SQL Tuning
Tuning SQL Statements Automatically
Application Tuning Challenges
SQL Tuning Advisor: Overview
Stale or Missing Object Statistics
SQL Statement Profiling
Plan Tuning Flow and SQL Profile Creation
Database Control and SQL Tuning Advisor
Implementing Recommendations