Oracle 18c SQL Performance Tuning
Course Code: O18CSPT
Duration: 2 days
Oracle 18c SQL Performance Tuning Course Overview
This Oracle 18c SQL Performance Tuning course introduces the delegate to the main concepts of Oracle SQL performance tuning. It is designed to give delegates practical experience in analysing and tuning the performance of SQL.
Exercises and examples are used throughout the course to give practical hands-on experience with the techniques covered.
Versions supported 12cR2, 18c, 19c.
Course Objectives
To provide the skills needed to monitor and tune an Oracle database application.
Who will the Course Benefit?
The Oracle 18c SQL Performance Tuning course is designed for SQL programmers, application developers, designers and technical support professionals who are required to tune the performance of an Oracle application running under an Oracle Database.
Skills Gained
The delegate will learn and acquire skills as follows:
- Selecting an Appropriate SQL Tuning Approach
- Tuning Database Applications for Optimal Performance
- Managing Statistics
- Creating and Using Indexes
- Structuring SQL Statements for Performance
- Examining and Interpreting the Execution Plan of a SQL Statement using EXPLAIN PLAN
- Examining the Efficiency of SQL Statements using SQL Trace and Autotrace
- Using the SQL Tuning Advisor
- Identifying SQL Statements that Perform Badly
- Using Hints to Influence Execution Plan
- Identifying Unused Indexes
Oracle 18c SQL Performance Tuning Training Course
Course Introduction
- Administration and Course Materials
- Course Structure and Agenda
- Delegate and Trainer Introductions
Session 1: INTRODUCTION TO ORACLE PERFORMANCE TUNING
- Overview of Oracle Database Tuning
- Application Developer Tuning Responsibilities
- Oracle DBA Tuning Responsibilities
- Oracle Tuning Process
- Plan a Routine Monitoring Regime
- Setting Suitable Goals
- Syntax Considerations
Session 2: TOOLS FOR EVALUATING SQL STATEMENTS
- Overview of SQL Statement Tuning
- Tools to Assist in SQL Tuning
- Use Explain Plan, Autotrace and SQL Trace to Examine the Execution of a SQL Statement
- Interpreting a SQL Trace
Session 3: THE SQL OPTIMIZER
- The SQL Optimizer
- Statement Transformation
- The Optimizer_Mode Initialization Parameter
- Cost Based Optimizer
- Managing Statistics with DBMS_STATS
- Automatic Statistics Gathering
- Dynamic Statistics
- Adaptive Optimization
- Transferring Statistics between Databases
Session 4: SORTS
- How Oracle Processes Sorts
- Temporary Disk Space Assignment
- SQL Operations that Use Sorts
Session 5: INDEXES
- Index Overview
- Selecting Suitable Columns for an Index
- B*Tree Indexes
- Rebuild an Index
- Create Multiple Indexes on the Same Column
- Composite Indexes
- Descending Indexes
- Access Paths with Indexes
- Index Scans
- Conditions That Stop Indexes Being Used
- Parameters that Affect Optimizer Index Choice
Oracle 18c SQL Performance Tuning Training Course
Session 6: ADVANCED INDEXES
- Bitmap Indexes
- Key Compressed Indexes
- Index Organized Tables
- Function Based Indexes
- Invisible Indexes
- Table Partitioning
- Serial Direct Path Reads
Session 7: JOIN OPERATIONS
- Understand Access Paths
- Joining Tables
- Nested Loops Join
- Merge Join
- Cluster Join
- Hash Join
- Anti Join and Semi Join
- Outer Joins
- Star Join
- Improve Optimization with Different Access Paths
Session 8: SQL TUNING ADVISOR USING SQL DEVELOPER
- Overview of the DBMSSQL_TUNE Package
- Using the SQL Tuning Advisor with SQL Developer
Session 9: SEQUENCES AND VIEWS
- Sequence Caching
- Views
- View Merging
- Inline Views
- The WITH Clause
Session 10: USING HINTS
- Using Hints to Influence Execution Plan
- Optimization Mode and Goals
- Access Methods
- Query Transformations
- Join Orders
- Join Operations
- Hint Examples
Session 11: MISCELLANEOUS
- Tips for Avoiding Problematic Queries
- SQL Performance Settings Options
- Array Size
- The Shared Pool
- Intelligent Cursor Sharing
- Bind Variable Usage
- Virtual Columns
- Result Caching
- Approximate Query Processing
- Some PL/SQL Performance Issues
- Course technical content is subject to change without notice.
- Course content is structured as sessions, this does not strictly map to course timings. Concepts, content and practicals often span sessions.
Requirements
A working knowledge of SQL is required. This can be obtained by attendance on the pre-requisite Oracle SQL course.
Pre-Requisite Courses
Further Learning
Live Virtual Classroom
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