ORACLE DATABASE 12C SQL TUNING

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Exploring the Oracle Database Architecture

Oracle Database Server Architecture: Overview
Connecting to the Database Instance
Physical Structure
Oracle Database Memory Structures: Overview
Automatic Shared Memory Management
Automated SQL Execution Memory Management
Database Storage Architecture, Logical and Physical Database Structures
Segments, Extents, and Blocks & SYSTEM and SYSAUX Tablespaces

Introduction to SQL Tuning

Reason for Inefficient SQL Performance
Performance Monitoring Solutions
Monitoring and Tuning Tools: Overview
CPU and Wait Time Tuning Dimensions
Scalability with Application Design, Implementation, and Configuration
Common Mistakes on Customer systems & Proactive Tuning Methodology
Simplicity in Application Design
Data Modeling, Table Design, Index Design, Using Views, SQL Execution Efficiency, Overview of SQL*Plus & SQL Developer

Introduction to the Optimizer

Structured Query Language
SQL Statement Parsing: Overview
Why Do You Need an Optimizer?
Optimization During Hard Parse Operation
Transformer & Estimator
Cost-Based Optimizer
Plan Generator
Controlling the Behavior of the Optimizer, Optimizer Features and Oracle Database Releases

Interpreting Execution Plans

What Is an Execution Plan? Where To Find Execution Plans and Viewing Execution Plans
Plan Table & AUTOTRACE
Using the V$SQL_PLAN View
Automatic Workload Repository (AWR)
SQL Monitoring: Overview
Interpreting an Execution Plan
Reading More Complex Execution Plans and Reviewing the Execution Plan
Looking Beyond Execution Plans

Application Tracing

End-to-End Application Tracing Challenge
Location for Diagnostic Traces
What is a Service? Use Services with Client Applications & Tracing Services
Use Enterprise Manager to Trace Services
Session Level Tracing: Example
The trcsess Utility and SQL Trace File Contents
Invoking the tkprof Utility and Output of the tkprof Command
tkprof Output with and without Index: Example

Optimizer: Table and Index Operations

Row Source Operations, Main Structures and Access Paths
Full Table Scan
Indexes: Overview and B*-tree Indexes and Nulls
Using Indexes: Considering Nullable Columns
Index-Organized Tables
Bitmap Indexes, Bitmap Operations and Bitmap Join Index
Composite Indexes and Invisible Index
Guidelines for Managing Indexes and Investigating Index Usage

Optimizer Join Methods

Nested Loops Join
Nested Loops Join: 11g Implementation
Sort Merge join
Hash Join and Cartesian Join
Equijoins and Nonequijoins
Outer Joins
Semijoins
Antijoins

Optimizer: Other Operators

When Are Clusters Useful?
Sorting Operators and Buffer Sort Operator
Inlist Iterator and View Operator
Count Stop Key Operator
Min/Max and First Row Operators and Other N-Array Operations
Filter operations and Concatenation Operations
UNION [ALL], INTERSECT, MINUS
Result Cache Operator

Case Study: Star Transformation

The Star Schema Model and The Snowflake Schema Model
Star Transformation
Retrieving Fact Rows from One Dimension and from All Dimensions
Joining the Intermediate Result Set with Dimensions
Star Transformation Plan Examples
Star Transformation Hints
Using Bitmap Join Indexes
Bitmap Join Indexes: Join Model 1 to 4

Optimizer Statistics

Types of Optimizer Statistics
Table, Index and Column Statistics
Index Clustering Factor
Histograms, Frequency Histograms and Histogram Considerations
Multicolumn Statistics and Expression Statistics Overview
Gathering System Statistics and Statistic Preferences
Manual Statistics Gathering
Locking Statistics, Export/Import Statistics and Set Statistics

Using Bind Variables

Cursor Sharing and Different Literal Values
Cursor Sharing and Bind Variables
Bind Variable Peeking
Cursor Sharing Enhancements
The CURSOR_SHARING Parameter
Forcing Cursor Sharing
Adaptive Cursor Sharing
Interacting with Adaptive Cursor Sharing

Using SQL Tuning Advisor

Tuning SQL Statements Automatically
Application Tuning Challenges
SQL Tuning Advisor: Overview
Stale or Missing Object Statistics and SQL Statement Profiling
Plan Tuning Flow and SQL Profile Creation
SQL Tuning Loop, Access Path Analysis and SQL Structure Analysis
Database Control and SQL Tuning Advisor
Implementing Recommendations

Using SQL Access Advisor

SQL Access Advisor: Overview
Possible Recommendations
SQL Access Advisor Session: Initial Options
SQL Access Advisor: Workload Source
SQL Access Advisor: Recommendation Options
SQL Access Advisor: Schedule and Review
SQL Access Advisor: Results
SQL Access Advisor: Results and Implementation

Using Automatic SQL Tuning

SQL Tuning Loop
Automatic SQL Tuning
Automatic Tuning Process
Configuring Automatic SQL Tuning
Automatic SQL Tuning: Result Summary
Automatic SQL Tuning: Result Details
Automatic SQL Tuning Result Details: Drilldown
Automatic SQL Tuning Considerations

SQL Performance Management

Maintaining SQL Performance and SQL Plan Management: Overview
SQL Plan Baseline: Architecture
Important Baseline SQL Plan Attributes
SQL Plan Selection
Possible SQL Plan Manageability Scenarios
SQL Performance Analyzer and SQL Plan Baseline Scenario
Loading a SQL Plan Baseline Automatically and Purging SQL Management Base Policy
Enterprise Manager and SQL Plan Baselines

Online Batches Available for the Areas