Expert Oracle exadata /
Throughout history, advances in technology have come in spurts. A single great idea can often spur rapid change as the idea takes hold and is propagated, often in totally unexpected directions. Exadata embodies such a change in how we think about and manage relational databases. The key change lies...
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| Other Authors: | , |
| Format: | eBook |
| Language: | English |
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New York :
Apress,
2011.
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| Series: | Expert's voice in Oracle.
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| Subjects: | |
| Online Access: | CONNECT CONNECT |
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| 520 | |a Throughout history, advances in technology have come in spurts. A single great idea can often spur rapid change as the idea takes hold and is propagated, often in totally unexpected directions. Exadata embodies such a change in how we think about and manage relational databases. The key change lies in the concept of offloading SQL processing to the storage layer. That concept is a huge win, and its implementation in the form of Exadata is truly a game changer. Expert Oracle Exadata will give you a look under the covers at how the combination of hardware and software that comprise Exadata actually work. Authors Kerry Osborne, Randy Johnson, and Tanel Põder share their real-world experience, gained through multiple Exadata implementations with the goal of opening up the internals of the Exadata platform. This book is intended for readers who want to understand what makes the platform tick and for whom--"how" it does what it is does is as important as what it does. By being exposed to the features that are unique to Exadata, you will gain an understanding of the mechanics that will allow you to fully benefit from the advantages that the platform provides. Changes the way you think about managing SQL performance and processing Provides a roadmap to laying out the Exadata platform to best support your existing systems Dives deeply into the internals, removing the "black box" mystique and showing how Exadata actually works | ||
| 505 | 0 | |a Title Page; Copyright Page; Contents at a Glance; Table of Contents; About the Author; About the Technical Reviewer; Acknowledgments; Introduction; The Intended Audience; How We Came to Write This Book; A Moving Target; Thanks to the Unofficial Editors; Who Wrote That?; Online Resources; A Note on "Kevin Says"; How We Tested; Schemas and Tables; Good Luck; CHAPTER 1 What Is Exadata?; An Overview of Exadata; History of Exadata; Alternative Views of What Exadata Is; Data Warehouse Appliance; OLTP Machine; Consolidation Platform; Configuration Options; Exadata Database Machine X2-2. | |
| 505 | 8 | |a Exadata Database Machine X2-8Upgrades; Hardware Components; Operating Systems; Database Servers'; InfiniBand; Flash Cache; Disks; Bits and Pieces; Software Components; Database Server Software; Storage Server Software; Software Architecture; Summary; CHAPTER 2 Offloading / Smart Scan; Why Offloading Is Important; What Offloading Includes; Column Projection; Predicate Filtering; Storage Indexes; Simple Joins (Bloom Filters); Function Offloading; Compression/Decompression; Encryption/Decryption; Virtual Columns; Data Mining Model Scoring; Non-Smart Scan Offloading; Smart File Creation. | |
| 505 | 8 | |a RMAN Incremental BackupsRMAN Restores; Smart Scan Prerequisites; Full Scans; Direct Path Reads; Exadata Storage; Smart Scan Disablers; Simply Unavailable; Reverting to Block Shipping; Skipping Some Offloading; How to Verify That Smart Scan is Happening; 10046 Trace; Performance Statistics (vsessstat); Offload Eligible Bytes; SQL Monitoring; Parameters; Summary; CHAPTER 3 Hybrid Columnar Compression; Oracle Storage Review; Oracle Compression Mechanisms; BASIC; OLTP; HCC; HCC Mechanics; HCC Performance; Load Performance; Query Performance; DML Performance; Expected Compression Ratios. | |
| 505 | 8 | |a Compression AdvisorReal World Examples; Custom Application Data; Telecom Call Detail Data; Financial Data; Retail Sales Data; Summary of the Real World Examples; Restrictions/Challenges; Moving Data to a non-Exadata Platform; Disabling Serial Direct Path Reads; Locking Issues; Single Row Access; Common Usage Scenarios; Summary; CHAPTER 4 Storage Indexes; Structure; Monitoring Storage Indexes; Database Statistics; Tracing; Monitoring Wrap Up; Controlling Storage Indexes; _kcfis_storageidx_disabled; _kcfis_storageidx_diag_mode; _cell_storidx_mode; Storage Software Parameters; Behavior. | |
| 505 | 8 | |a PerformanceSpecial Optimization for Nulls; Physical Distribution of Values; Potential Issues; Incorrect Results; Moving Target; Partition Size; Incompatible Coding Techniques; Summary; CHAPTER 5 Exadata Smart Flash Cache; Hardware; Cache vs. Flash Disk; Using Flash Memory as Cache; How ESFC is Created; Controlling ESFC Usage; Monitoring; At the Storage Layer; At the Database Layer; Performance; Summary; CHAPTER 6 Exadata Parallel Operations; Parameters; Parallelization at the Storage Tier; Auto DOP; Operation and Configuration; I/O Calibration; Auto DOP Wrap Up; Parallel Statement Queuing. | |
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