Oracle Performance Tuning-Buffer Cache Waits-Simulated-2

Oracle Performance Tuning - All Wait Events for Buffer Cache - Simulated and Resolved

What you'll learn

Introduction to Oracle Data Access

Buffer Cache Reads: Concepts and Scenarios

Direct Path Reads: Concepts and Scenarios

Factors Influencing Data Access: Size, Frequency, Query Type, and System Resources

Simulation-Based Training: Optimizing Data Access in Real-World Scenarios

Case Studies: Real-World Examples of Optimizing Data Access

Best Practices and Troubleshooting

Requirements

Oracle DBA

Description

Title: "Oracle Engine Decision-Making: Buffer Cache Reads vs Direct Path Reads"Introduction:- Briefly introduce the concept of data access in Oracle databases- Explain the importance of understanding how the Oracle engine decides between buffer cache reads and direct path reads- Preview the key factors that influence this decision-making processTutorial Overview:- Explain that the tutorial will cover the following topics:    - Buffer cache reads: concepts, scenarios, and benefits    - Direct path reads: concepts, scenarios, and benefits    - Key factors influencing the Oracle engine's decision-making process    - Simulation-based demonstrations to illustrate the decision-making processBuffer Cache Reads:- Define buffer cache reads and explain how they work- Discuss scenarios where buffer cache reads are preferred, such as:    - Small to medium-sized queries    - Frequently accessed data    - Index scans- Highlight the benefits of buffer cache reads, including:    - Faster access times    - Reduced disk I/O    - Improved performanceDirect Path Reads:- Define direct path reads and explain how they work- Discuss scenarios where direct path reads are preferred, such as:    - Large-scale data transfers    - Full table scans    - Parallel queries- Highlight the benefits of direct path reads, including:    - Improved performance for large-scale data transfers    - Reduced CPU overhead    - Increased scalabilityKey Factors Influencing Decision-Making:- Discuss the key factors that influence the Oracle engine's decision-making process, including:    - Size of the data being accessed    - Frequency of access    - Type of query (e.g., index scan, full table scan)    - System resources (e.g., CPU, memory, disk space)    - Oracle configuration parameters (e.g., db_block_size, db_cache_size)Simulation-Based Demonstrations:- Provide simulation-based demonstrations to illustrate the decision-making process, including:    - Scenarios where buffer cache reads are preferred    - Scenarios where direct path reads are preferred    - Scenarios where the Oracle engine switches between buffer cache reads and direct path readsConclusion:- Summarize the key takeaways from the tutorial- Emphasize the importance of understanding how the Oracle engine decides between buffer cache reads and direct path reads- Provide additional resources for further learning.Gautam

Overview

Section 1: Introduction

Lecture 1 Implement Different Block Sizes In Buffer Cache

Section 2: Buffer Cache Reads V/S Direct Patch Reads - Part 1

Lecture 2 Buffer Cache Reads V/S Direct Patch Reads - Part 1

Section 3: Buffer Cache Reads V/S Direct Patch Reads - Part 2

Lecture 3 Buffer Cache Reads V/S Direct Patch Reads - Part 2

Section 4: Buffer Cache Reads V/S Direct Patch Reads - Part 3

Lecture 4 Buffer Cache Reads V/S Direct Patch Reads - Part 3

Section 5: Demystifying Cache Fusion in Oracle RAC - Part 1

Lecture 5 Demystifying Cache Fusion in Oracle RAC - Part 1

Section 6: Demystifying Cache Fusion in Oracle RAC - Part 2

Lecture 6 Demystifying Cache Fusion in Oracle RAC - Part 2

Section 7: Demystifying Cache Fusion in Oracle RAC - Part 3

Lecture 7 Demystifying Cache Fusion in Oracle RAC - Part 3

Oracle DBA,Exadata DMA