Submit Search
Upload
Indexes From the Concept to Internals
•
Download as PPTX, PDF
•
5 likes
•
3,861 views
Deiby Gómez
Follow
The presentation of Deiby Gómez used in Collaborate15, Las Vegas 2015.
Read less
Read more
Technology
Report
Share
Report
Share
1 of 28
Download now
Recommended
Oracle b tree index internals - rebuilding the thruth
Oracle b tree index internals - rebuilding the thruth
Xavier Davias
Troubleshooting Tips and Tricks for Database 19c ILOUG Feb 2020
Troubleshooting Tips and Tricks for Database 19c ILOUG Feb 2020
Sandesh Rao
Troubleshooting Tips and Tricks for Database 19c - Sangam 2019
Troubleshooting Tips and Tricks for Database 19c - Sangam 2019
Sandesh Rao
11 Things About11g
11 Things About11g
fcamachob
Oracle 10g Performance: chapter 09 enqueues
Oracle 10g Performance: chapter 09 enqueues
Kyle Hailey
Rac 12c optimization
Rac 12c optimization
Riyaj Shamsudeen
Ukoug15 SIMD outside and inside Oracle 12c (12.1.0.2)
Ukoug15 SIMD outside and inside Oracle 12c (12.1.0.2)
Laurent Leturgez
Tools, not only for Oracle RAC
Tools, not only for Oracle RAC
Markus Flechtner
Recommended
Oracle b tree index internals - rebuilding the thruth
Oracle b tree index internals - rebuilding the thruth
Xavier Davias
Troubleshooting Tips and Tricks for Database 19c ILOUG Feb 2020
Troubleshooting Tips and Tricks for Database 19c ILOUG Feb 2020
Sandesh Rao
Troubleshooting Tips and Tricks for Database 19c - Sangam 2019
Troubleshooting Tips and Tricks for Database 19c - Sangam 2019
Sandesh Rao
11 Things About11g
11 Things About11g
fcamachob
Oracle 10g Performance: chapter 09 enqueues
Oracle 10g Performance: chapter 09 enqueues
Kyle Hailey
Rac 12c optimization
Rac 12c optimization
Riyaj Shamsudeen
Ukoug15 SIMD outside and inside Oracle 12c (12.1.0.2)
Ukoug15 SIMD outside and inside Oracle 12c (12.1.0.2)
Laurent Leturgez
Tools, not only for Oracle RAC
Tools, not only for Oracle RAC
Markus Flechtner
Sap application log
Sap application log
Adaikalam Alexander Rayappa™
Sangam 18 - The New Optimizer in Oracle 12c
Sangam 18 - The New Optimizer in Oracle 12c
Connor McDonald
All on Adaptive and Extended Cursor Sharing
All on Adaptive and Extended Cursor Sharing
Mohamed Houri
Examining Oracle GoldenGate Trail Files
Examining Oracle GoldenGate Trail Files
Bobby Curtis
#dbhouseparty - Real World Problem Solving with SQL
#dbhouseparty - Real World Problem Solving with SQL
Tammy Bednar
Database-Migration and -Upgrade with Transportable Tablespaces
Database-Migration and -Upgrade with Transportable Tablespaces
Markus Flechtner
Oracle Globalization Support, NLS_LENGTH_SEMANTICS, Unicode
Oracle Globalization Support, NLS_LENGTH_SEMANTICS, Unicode
Markus Flechtner
The three investigators: OraChk, TFA and DBSAT
The three investigators: OraChk, TFA and DBSAT
Markus Flechtner
Oracle Multitenant Database 2.0 - Improvements in Oracle Database 12c Release 2
Oracle Multitenant Database 2.0 - Improvements in Oracle Database 12c Release 2
Markus Flechtner
Rac questions
Rac questions
parvezsigan
Adventures in Dataguard
Adventures in Dataguard
Jason Arneil
Tech Talk: Best Practices for Data Modeling
Tech Talk: Best Practices for Data Modeling
ScyllaDB
Latin America Tour 2019 - 18c and 19c featues
Latin America Tour 2019 - 18c and 19c featues
Connor McDonald
Rmoug ashmaster
Rmoug ashmaster
Kyle Hailey
pstack, truss etc to understand deeper issues in Oracle database
pstack, truss etc to understand deeper issues in Oracle database
Riyaj Shamsudeen
Oracle Application Containers
Oracle Application Containers
Markus Flechtner
Oracle goldengate 11g schema replication from standby database
Oracle goldengate 11g schema replication from standby database
uzzal basak
Oracle Data Guard
Oracle Data Guard
Martin Meyer
Diagnóstico de problemas de red para DBAs
Diagnóstico de problemas de red para DBAs
Guatemala User Group
Oracle Database Performance Tuning: The Not SQL Option
Oracle Database Performance Tuning: The Not SQL Option
Guatemala User Group
Oracle Database 12.1.0.2: New Features
Oracle Database 12.1.0.2: New Features
Deiby Gómez
12 Things about Oracle WebLogic Server 12c
12 Things about Oracle WebLogic Server 12c
Guatemala User Group
More Related Content
What's hot
Sap application log
Sap application log
Adaikalam Alexander Rayappa™
Sangam 18 - The New Optimizer in Oracle 12c
Sangam 18 - The New Optimizer in Oracle 12c
Connor McDonald
All on Adaptive and Extended Cursor Sharing
All on Adaptive and Extended Cursor Sharing
Mohamed Houri
Examining Oracle GoldenGate Trail Files
Examining Oracle GoldenGate Trail Files
Bobby Curtis
#dbhouseparty - Real World Problem Solving with SQL
#dbhouseparty - Real World Problem Solving with SQL
Tammy Bednar
Database-Migration and -Upgrade with Transportable Tablespaces
Database-Migration and -Upgrade with Transportable Tablespaces
Markus Flechtner
Oracle Globalization Support, NLS_LENGTH_SEMANTICS, Unicode
Oracle Globalization Support, NLS_LENGTH_SEMANTICS, Unicode
Markus Flechtner
The three investigators: OraChk, TFA and DBSAT
The three investigators: OraChk, TFA and DBSAT
Markus Flechtner
Oracle Multitenant Database 2.0 - Improvements in Oracle Database 12c Release 2
Oracle Multitenant Database 2.0 - Improvements in Oracle Database 12c Release 2
Markus Flechtner
Rac questions
Rac questions
parvezsigan
Adventures in Dataguard
Adventures in Dataguard
Jason Arneil
Tech Talk: Best Practices for Data Modeling
Tech Talk: Best Practices for Data Modeling
ScyllaDB
Latin America Tour 2019 - 18c and 19c featues
Latin America Tour 2019 - 18c and 19c featues
Connor McDonald
Rmoug ashmaster
Rmoug ashmaster
Kyle Hailey
pstack, truss etc to understand deeper issues in Oracle database
pstack, truss etc to understand deeper issues in Oracle database
Riyaj Shamsudeen
Oracle Application Containers
Oracle Application Containers
Markus Flechtner
Oracle goldengate 11g schema replication from standby database
Oracle goldengate 11g schema replication from standby database
uzzal basak
Oracle Data Guard
Oracle Data Guard
Martin Meyer
What's hot
(18)
Sap application log
Sap application log
Sangam 18 - The New Optimizer in Oracle 12c
Sangam 18 - The New Optimizer in Oracle 12c
All on Adaptive and Extended Cursor Sharing
All on Adaptive and Extended Cursor Sharing
Examining Oracle GoldenGate Trail Files
Examining Oracle GoldenGate Trail Files
#dbhouseparty - Real World Problem Solving with SQL
#dbhouseparty - Real World Problem Solving with SQL
Database-Migration and -Upgrade with Transportable Tablespaces
Database-Migration and -Upgrade with Transportable Tablespaces
Oracle Globalization Support, NLS_LENGTH_SEMANTICS, Unicode
Oracle Globalization Support, NLS_LENGTH_SEMANTICS, Unicode
The three investigators: OraChk, TFA and DBSAT
The three investigators: OraChk, TFA and DBSAT
Oracle Multitenant Database 2.0 - Improvements in Oracle Database 12c Release 2
Oracle Multitenant Database 2.0 - Improvements in Oracle Database 12c Release 2
Rac questions
Rac questions
Adventures in Dataguard
Adventures in Dataguard
Tech Talk: Best Practices for Data Modeling
Tech Talk: Best Practices for Data Modeling
Latin America Tour 2019 - 18c and 19c featues
Latin America Tour 2019 - 18c and 19c featues
Rmoug ashmaster
Rmoug ashmaster
pstack, truss etc to understand deeper issues in Oracle database
pstack, truss etc to understand deeper issues in Oracle database
Oracle Application Containers
Oracle Application Containers
Oracle goldengate 11g schema replication from standby database
Oracle goldengate 11g schema replication from standby database
Oracle Data Guard
Oracle Data Guard
Viewers also liked
Diagnóstico de problemas de red para DBAs
Diagnóstico de problemas de red para DBAs
Guatemala User Group
Oracle Database Performance Tuning: The Not SQL Option
Oracle Database Performance Tuning: The Not SQL Option
Guatemala User Group
Oracle Database 12.1.0.2: New Features
Oracle Database 12.1.0.2: New Features
Deiby Gómez
12 Things about Oracle WebLogic Server 12c
12 Things about Oracle WebLogic Server 12c
Guatemala User Group
Re-Think Mobile… Beyond Mobile‐First: Oracle Mobile Strategy and Overview
Re-Think Mobile… Beyond Mobile‐First: Oracle Mobile Strategy and Overview
Guatemala User Group
Monitoreo del performance de linux con sar
Monitoreo del performance de linux con sar
Guatemala User Group
Crating a Robust Performance Strategy
Crating a Robust Performance Strategy
Guatemala User Group
Building Better Mobile Backends with Oracle Mobile Cloud Service
Building Better Mobile Backends with Oracle Mobile Cloud Service
Guatemala User Group
Oracle GoldenGate for Oracle DBAs
Oracle GoldenGate for Oracle DBAs
Guatemala User Group
Gestión de grandes volúmenes de información
Gestión de grandes volúmenes de información
Guatemala User Group
Oracle Linux and Oracle Database - A Trusted Combination
Oracle Linux and Oracle Database - A Trusted Combination
Guatemala User Group
Cutting edge Essbase
Cutting edge Essbase
Guatemala User Group
Oracle WebLogic Server 12c with Docker
Oracle WebLogic Server 12c with Docker
Guatemala User Group
Oracle Insert Statements for DBAs and Developers
Oracle Insert Statements for DBAs and Developers
Guatemala User Group
RMAN – The Pocket Knife of a DBA
RMAN – The Pocket Knife of a DBA
Guatemala User Group
Best Features of Multitenant 12c
Best Features of Multitenant 12c
Deiby Gómez
Backup andrecoverychecklist
Backup andrecoverychecklist
praveen_01236
OTN Tour 2014: Rac 11g vs 12c
OTN Tour 2014: Rac 11g vs 12c
Deiby Gómez
Oracle Database 12c: Privilegios, Usuarios y Roles
Oracle Database 12c: Privilegios, Usuarios y Roles
Deiby Gómez
Cloud Integration for Human Resources: Connect with Your talent in the Cloud
Cloud Integration for Human Resources: Connect with Your talent in the Cloud
Guatemala User Group
Viewers also liked
(20)
Diagnóstico de problemas de red para DBAs
Diagnóstico de problemas de red para DBAs
Oracle Database Performance Tuning: The Not SQL Option
Oracle Database Performance Tuning: The Not SQL Option
Oracle Database 12.1.0.2: New Features
Oracle Database 12.1.0.2: New Features
12 Things about Oracle WebLogic Server 12c
12 Things about Oracle WebLogic Server 12c
Re-Think Mobile… Beyond Mobile‐First: Oracle Mobile Strategy and Overview
Re-Think Mobile… Beyond Mobile‐First: Oracle Mobile Strategy and Overview
Monitoreo del performance de linux con sar
Monitoreo del performance de linux con sar
Crating a Robust Performance Strategy
Crating a Robust Performance Strategy
Building Better Mobile Backends with Oracle Mobile Cloud Service
Building Better Mobile Backends with Oracle Mobile Cloud Service
Oracle GoldenGate for Oracle DBAs
Oracle GoldenGate for Oracle DBAs
Gestión de grandes volúmenes de información
Gestión de grandes volúmenes de información
Oracle Linux and Oracle Database - A Trusted Combination
Oracle Linux and Oracle Database - A Trusted Combination
Cutting edge Essbase
Cutting edge Essbase
Oracle WebLogic Server 12c with Docker
Oracle WebLogic Server 12c with Docker
Oracle Insert Statements for DBAs and Developers
Oracle Insert Statements for DBAs and Developers
RMAN – The Pocket Knife of a DBA
RMAN – The Pocket Knife of a DBA
Best Features of Multitenant 12c
Best Features of Multitenant 12c
Backup andrecoverychecklist
Backup andrecoverychecklist
OTN Tour 2014: Rac 11g vs 12c
OTN Tour 2014: Rac 11g vs 12c
Oracle Database 12c: Privilegios, Usuarios y Roles
Oracle Database 12c: Privilegios, Usuarios y Roles
Cloud Integration for Human Resources: Connect with Your talent in the Cloud
Cloud Integration for Human Resources: Connect with Your talent in the Cloud
Similar to Indexes From the Concept to Internals
5 Cool Things About SQL
5 Cool Things About SQL
Connor McDonald
OpenWorld Sep14 12c for_developers
OpenWorld Sep14 12c for_developers
Connor McDonald
11thingsabout11g 12659705398222 Phpapp01
11thingsabout11g 12659705398222 Phpapp01
Karam Abuataya
Sangam 2019 - The Latest Features
Sangam 2019 - The Latest Features
Connor McDonald
Oracle dbms_xplan.display_cursor format
Oracle dbms_xplan.display_cursor format
Franck Pachot
Oracle 11g caracteristicas poco documentadas 3 en 1
Oracle 11g caracteristicas poco documentadas 3 en 1
Ronald Francisco Vargas Quesada
Oracle Diagnostics : Explain Plans (Simple)
Oracle Diagnostics : Explain Plans (Simple)
Hemant K Chitale
MySQL 8 -- A new beginning : Sunshine PHP/PHP UK (updated)
MySQL 8 -- A new beginning : Sunshine PHP/PHP UK (updated)
Dave Stokes
Simulation based design and analysis of combined effect of various data secur...
Simulation based design and analysis of combined effect of various data secur...
IRJET Journal
IRJET- Simulation based design and analysis of combined effect of various ...
IRJET- Simulation based design and analysis of combined effect of various ...
IRJET Journal
Mod03 linking and accelerating
Mod03 linking and accelerating
Peter Haase
Understanding index
Understanding index
Chien Chung Shen
Writing efficient sql
Writing efficient sql
j9soto
MySQL 5.5 Guide to InnoDB Status
MySQL 5.5 Guide to InnoDB Status
Karwin Software Solutions LLC
Top 10 tips for Oracle performance
Top 10 tips for Oracle performance
Guy Harrison
Understanding Query Optimization with ‘regular’ and ‘Exadata’ Oracle
Understanding Query Optimization with ‘regular’ and ‘Exadata’ Oracle
Guatemala User Group
All you need to know about CREATE STATISTICS
All you need to know about CREATE STATISTICS
EDB
شرح مبسط جدا لمنهج سيسكو CCNA
شرح مبسط جدا لمنهج سيسكو CCNA
Dawood Aqlan
Switching 2
Switching 2
Kishore Kumar
ERTS UNIT 3.ppt
ERTS UNIT 3.ppt
Pavithra525349
Similar to Indexes From the Concept to Internals
(20)
5 Cool Things About SQL
5 Cool Things About SQL
OpenWorld Sep14 12c for_developers
OpenWorld Sep14 12c for_developers
11thingsabout11g 12659705398222 Phpapp01
11thingsabout11g 12659705398222 Phpapp01
Sangam 2019 - The Latest Features
Sangam 2019 - The Latest Features
Oracle dbms_xplan.display_cursor format
Oracle dbms_xplan.display_cursor format
Oracle 11g caracteristicas poco documentadas 3 en 1
Oracle 11g caracteristicas poco documentadas 3 en 1
Oracle Diagnostics : Explain Plans (Simple)
Oracle Diagnostics : Explain Plans (Simple)
MySQL 8 -- A new beginning : Sunshine PHP/PHP UK (updated)
MySQL 8 -- A new beginning : Sunshine PHP/PHP UK (updated)
Simulation based design and analysis of combined effect of various data secur...
Simulation based design and analysis of combined effect of various data secur...
IRJET- Simulation based design and analysis of combined effect of various ...
IRJET- Simulation based design and analysis of combined effect of various ...
Mod03 linking and accelerating
Mod03 linking and accelerating
Understanding index
Understanding index
Writing efficient sql
Writing efficient sql
MySQL 5.5 Guide to InnoDB Status
MySQL 5.5 Guide to InnoDB Status
Top 10 tips for Oracle performance
Top 10 tips for Oracle performance
Understanding Query Optimization with ‘regular’ and ‘Exadata’ Oracle
Understanding Query Optimization with ‘regular’ and ‘Exadata’ Oracle
All you need to know about CREATE STATISTICS
All you need to know about CREATE STATISTICS
شرح مبسط جدا لمنهج سيسكو CCNA
شرح مبسط جدا لمنهج سيسكو CCNA
Switching 2
Switching 2
ERTS UNIT 3.ppt
ERTS UNIT 3.ppt
More from Deiby Gómez
Beneficios de Oracle Cloud
Beneficios de Oracle Cloud
Deiby Gómez
Por que actualizar a 12c
Por que actualizar a 12c
Deiby Gómez
Why to Upgrade to Oracle 12c
Why to Upgrade to Oracle 12c
Deiby Gómez
Por qué la competitividad es importante
Por qué la competitividad es importante
Deiby Gómez
El plan
El plan
Deiby Gómez
Oracle Database 11g vs 12c
Oracle Database 11g vs 12c
Deiby Gómez
Oracle Database 12.1.0.2 New Features
Oracle Database 12.1.0.2 New Features
Deiby Gómez
Best Practices to avoid ORA-01555
Best Practices to avoid ORA-01555
Deiby Gómez
More from Deiby Gómez
(8)
Beneficios de Oracle Cloud
Beneficios de Oracle Cloud
Por que actualizar a 12c
Por que actualizar a 12c
Why to Upgrade to Oracle 12c
Why to Upgrade to Oracle 12c
Por qué la competitividad es importante
Por qué la competitividad es importante
El plan
El plan
Oracle Database 11g vs 12c
Oracle Database 11g vs 12c
Oracle Database 12.1.0.2 New Features
Oracle Database 12.1.0.2 New Features
Best Practices to avoid ORA-01555
Best Practices to avoid ORA-01555
Recently uploaded
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Patryk Bandurski
CloudStudio User manual (basic edition):
CloudStudio User manual (basic edition):
comworks
"Debugging python applications inside k8s environment", Andrii Soldatenko
"Debugging python applications inside k8s environment", Andrii Soldatenko
Fwdays
DMCC Future of Trade Web3 - Special Edition
DMCC Future of Trade Web3 - Special Edition
Dubai Multi Commodity Centre
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
Fwdays
Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!
Commit University
Beyond Boundaries: Leveraging No-Code Solutions for Industry Innovation
Beyond Boundaries: Leveraging No-Code Solutions for Industry Innovation
Safe Software
The Future of Software Development - Devin AI Innovative Approach.pdf
The Future of Software Development - Devin AI Innovative Approach.pdf
SeasiaInfotech2
DevEX - reference for building teams, processes, and platforms
DevEX - reference for building teams, processes, and platforms
Sergiu Bodiu
Human Factors of XR: Using Human Factors to Design XR Systems
Human Factors of XR: Using Human Factors to Design XR Systems
Mark Billinghurst
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Zilliz
Training state-of-the-art general text embedding
Training state-of-the-art general text embedding
Zilliz
SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024
Lorenzo Miniero
Unraveling Multimodality with Large Language Models.pdf
Unraveling Multimodality with Large Language Models.pdf
Alex Barbosa Coqueiro
Install Stable Diffusion in windows machine
Install Stable Diffusion in windows machine
Padma Pradeep
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
null - The Open Security Community
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Mark Simos
Search Engine Optimization SEO PDF for 2024.pdf
Search Engine Optimization SEO PDF for 2024.pdf
RankYa
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
Fwdays
Developer Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQL
ScyllaDB
Recently uploaded
(20)
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
Integration and Automation in Practice: CI/CD in Mule Integration and Automat...
CloudStudio User manual (basic edition):
CloudStudio User manual (basic edition):
"Debugging python applications inside k8s environment", Andrii Soldatenko
"Debugging python applications inside k8s environment", Andrii Soldatenko
DMCC Future of Trade Web3 - Special Edition
DMCC Future of Trade Web3 - Special Edition
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
Nell’iperspazio con Rocket: il Framework Web di Rust!
Nell’iperspazio con Rocket: il Framework Web di Rust!
Beyond Boundaries: Leveraging No-Code Solutions for Industry Innovation
Beyond Boundaries: Leveraging No-Code Solutions for Industry Innovation
The Future of Software Development - Devin AI Innovative Approach.pdf
The Future of Software Development - Devin AI Innovative Approach.pdf
DevEX - reference for building teams, processes, and platforms
DevEX - reference for building teams, processes, and platforms
Human Factors of XR: Using Human Factors to Design XR Systems
Human Factors of XR: Using Human Factors to Design XR Systems
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Training state-of-the-art general text embedding
Training state-of-the-art general text embedding
SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024
Unraveling Multimodality with Large Language Models.pdf
Unraveling Multimodality with Large Language Models.pdf
Install Stable Diffusion in windows machine
Install Stable Diffusion in windows machine
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Search Engine Optimization SEO PDF for 2024.pdf
Search Engine Optimization SEO PDF for 2024.pdf
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
Developer Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQL
Indexes From the Concept to Internals
1.
Oracle Indexes: From
the Concept to Internals Prepared by: Deiby Gómez Oracle ACE & OCM 11g Pythian Oracle Consultant Session ID#: 292
2.
© 2014 Pythian
Confidential2 - Oracle ACE (23 years old) - Oracle Certified Master 11g (24 years old) - OCP 11g & 12c, RAC 11g, SOA, Exadata X3 - President of Guatemala Oracle User Group - Pythian Oracle Database Consultant Twitter: @hdeiby Facebook: /HDeiby Email: gomez@pythian.com Blog: www.oraclefromguatemala.com.gt
3.
© 2014 Pythian
Confidential3 WHAT IS AN “INDEX”?
4.
© 2014 Pythian
Confidential4 B-TREE INDEXES
5.
© 2014 Pythian
Confidential5 Root (Branch) Branch Leaf B-TREE INDEX: CONCEPTS
6.
© 2014 Pythian
Confidential6 WHAT IS AN “INDEX”?
7.
© 2014 Pythian
Confidential7 B-TREE INDEX: INTERNALS Header Free Space Data
8.
© 2014 Pythian
Confidential8 B-TREE INDEX: INTERNALS Leaf node Branch node Branch block dump ================= header address 139950945835596=0x7f48de699a4c kdxcolev 2 KDXCOLEV Flags = - - - kdxcolok 0 kdxcoopc 0x80: opcode=0: iot flags=--- is converted=Y kdxconco 1 kdxcosdc 0 kdxconro 1 kdxcofbo 30=0x1e kdxcofeo 8048=0x1f70 kdxcoavs 8018 kdxbrlmc 16779590=0x1000946 kdxbrsno 0 kdxbrbksz 8056 kdxbr2urrc 0 Leaf block dump =============== header address 139950941831268=0x7f48de2c8064 kdxcolev 0 KDXCOLEV Flags = - - - kdxcolok 0 kdxcoopc 0x80: opcode=0: iot flags=--- is converted=Y kdxconco 1 kdxcosdc 0 kdxconro 1 kdxcofbo 38=0x26 kdxcofeo 8021=0x1f55 kdxcoavs 7983 kdxlespl 0 kdxlende 0 kdxlenxt 0=0x0 kdxleprv 0=0x0 kdxledsz 6 kdxlebksz 8032 row#0[8021] flag: ------, lock: 0, len=11, data:(6): 01 00 00 85 00 00 col 0; len 2; (2): c1 02 ----- end of leaf block dump ----- row#0[8048] dba: 16779592=0x1000948 col 0; len 3; (3): c2 09 10 ----- end of branch block dump -----
9.
© 2014 Pythian
Confidential9 B-TREE INDEX: INTERNALS Leaf node Branch node Branch block dump ================= header address 139950945835596=0x7f48de699a4c kdxcolev 2 KDXCOLEV Flags = - - - kdxcolok 0 kdxcoopc 0x80: opcode=0: iot flags=--- is converted=Y kdxconco 1 kdxcosdc 0 kdxconro 1 kdxcofbo 30=0x1e kdxcofeo 8048=0x1f70 kdxcoavs 8018 kdxbrlmc 16779590=0x1000946<--Address to Prev Node kdxbrsno 0<--Last index entry modified kdxbrbksz 8056<--usable space in the block. kdxbr2urrc 0 row#0[8048] dba: 16779592=0x1000948 <--Pointer to the 2nd intermediate branch block col 0; len 3; (3): c2 09 10 <--first column value used to navigate ----- end of branch block dump ----- Leaf block dump =============== header address 139950941831268=0x7f48de2c8064 kdxcolev 0 <--block level KDXCOLEV Flags = - - - kdxcolok 0 <--itl of service tx holding block lock kdxcoopc 0x80: opcode=0: iot flags=--- is converted=Y <--block lock op code kdxconco 1<--number of columns kdxcosdc 0<--Split or Deleted count kdxconro 1<--Number of entries kdxcofbo 38=0x26 <--offset where the free space in this block starts kdxcofeo 8021=0x1f55 <--offset where the free space in this block finishes kdxcoavs 7983 <--(kdxcofeo-kdxcofbo) The free space! kdxlespl 0<--space held by unlocked split entries kdxlende 0 <--entries deleted kdxlenxt 0=0x0 <--there is not pointer to Next Leaf Node kdxleprv 0=0x0 <--there is not pointer to Previous Leaf Node kdxledsz 6<--bytes used by rowed data (KEYDATA) kdxlebksz 8032<--usable space in the block. row#0[8021] flag: ------, lock: 0, len=11, data:(6): 01 00 00 85 00 00 col 0; len 2; (2): c1 02 ----- end of leaf block dump -----
10.
© 2014 Pythian
Confidential10 B-TREE INDEX SELECT OPERATION: CONCEPTS 1,rowid 1,rowid 2,rowid 1,rowid 2,rowid …. 814,rowid 815,rowid create table dgomez.t1(id number,value varchar2(20)); Select id,value from dgomez.t1 where id=2; 1,rowid 2,rowid …… 814,rowid 815,rowid ID Value 2 Deiby Note: 1 entry per Leaf Node
11.
© 2014 Pythian
Confidential11 B-TREE INDEX SELECT OPERATION: INTERNALS SQL> select id, value from dgomez.t1 where id=2; ID V ---------- - 2 Deiby Execution Plan ---------------------------------------------------------- Plan hash value: 408250987 ----------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ----------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 15 | 2 (0)| 00:00:01 | | 1 | TABLE ACCESS BY INDEX ROWID| T1 | 1 | 15 | 2 (0)| 00:00:01 | |* 2 | INDEX UNIQUE SCAN | BTREE | 1 | | 2 (0)| 00:00:01 | ----------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - access("ID"=2) Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 4 consistent gets 0 physical reads 0 redo size 457 bytes sent via SQL*Net to client 508 bytes received via SQL*Net from client 1 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processed SQL>
12.
© 2014 Pythian
Confidential12 B-TREE INDEX DELETE OPERATION: INTERNALS Delete from ioug.t1 where vkey='D'; row#0[8021] flag: ------, lock: 0, len=11 col 0; len 1; (1): 41 col 1; len 6; (6): 01 80 00 87 00 00 row#1[8010] flag: ------, lock: 0, len=11 col 0; len 1; (1): 42 col 1; len 6; (6): 01 80 00 87 00 01 row#2[7977] flag: ------, lock: 0, len=11 col 0; len 1; (1): 43 col 1; len 6; (6): 01 80 00 87 00 03 row#3[7988] flag: ---D--, lock: 2, len=11 col 0; len 1; (1): 44 <---vkey=’D’ col 1; len 6; (6): 01 80 00 87 00 02 ----- end of leaf block dump -----v • The entry is just marked as “deleted” but it is not deleted really. • The deleted Index entry can be reused.
13.
© 2014 Pythian
Confidential13 B-TREE INDEX UPDATE OPERATION: INTERNALS row#0[8021] flag: ------, lock: 0, len=11 col 0; len 1; (1): 41 col 1; len 6; (6): 01 80 00 87 00 00 row#1[8010] flag: ------, lock: 0, len=11 col 0; len 1; (1): 42 col 1; len 6; (6): 01 80 00 87 00 01 row#2[7999] flag: ---D--, lock: 2, len=11 col 0; len 1; (1): 43 <---vkey=’C’ col 1; len 6; (6): 01 80 00 87 00 02 row#3[7988] flag: ------, lock: 2, len=11 col 0; len 1; (1): 44 <---vkey=’D’ col 1; len 6; (6): 01 80 00 87 00 02 ----- end of leaf block dump ----- update ioug.t1 set vvalue=‘D' where vkey='C';
14.
© 2014 Pythian
Confidential14 14 BITMAP INDEXES
15.
© 2014 Pythian
Confidential15 BITMAP INDEX: CONCEPTS 15
16.
© 2014 Pythian
Confidential16 BITMAP INDEX: CONCEPTS
17.
© 2014 Pythian
Confidential17 BITMAP INDEX SELECT OPERATION 17
18.
© 2014 Pythian
Confidential18 BITMAP INDEX UPDATE OPERATION 18 row#0[8005] flag: ------, lock: 0, len=27 col 0; len 6; (6): 43 61 6e 61 64 61 col 1; len 6; (6): 01 80 00 83 00 00 col 2; len 6; (6): 01 80 00 83 00 0f col 3; len 3; (3): c9 0c 03 row#1[7886] flag: ------, lock: 2, len=35 col 0; len 9; (9): 47 55 41 54 45 4d 41 4c 41vkey=GUATEMALA col 1; len 6; (6): 00 00 00 00 00 00 Beginning of ROWIDs col 2; len 6; (6): 01 80 00 83 00 0f Ending of ROWIDs col 3; len 8; (8): f9 91 df 80 dc 08 61 08 Bitmap String row#2[7975] flag: ---D--, lock: 2, len=30 col 0; len 9; (9): 47 75 61 74 65 6d 61 6c 61vkey=Guatemala col 1; len 6; (6): 01 80 00 83 00 00 Beginning of ROWIDs col 2; len 6; (6): 01 80 00 83 00 0f Ending of ROWIDs col 3; len 3; (3): c9 61 08 Bitmap String row#3[7948] flag: ------, lock: 0, len=27 col 0; len 6; (6): 4d 65 78 69 63 6f col 1; len 6; (6): 01 80 00 83 00 00 col 2; len 6; (6): 01 80 00 83 00 0f col 3; len 3; (3): c9 92 04 ----- end of leaf block dump ----- update ioug.t1 set vkey='GUATEMALA' where vkey='Guatemala';
19.
© 2014 Pythian
Confidential19 BITMAP INDEX INSERT OPERATION • If the KEY exists: – The Bitmap String is updated • If the KEY doesn’t exist – A new Bitmap Entry is created with its own Bitmap String 19
20.
© 2014 Pythian
Confidential20 BITMAP INDEX DELETE OPERATION • If after the deletion there are some rows with the KEY afer the DELETE operation, then the Index is not marked as deleted and only the Bitmap String is updated with “0” in the positions where our deleted rows were stored. • If after delete there is no any row with the KEY after the DELETE operatioN, then the Index Entry is marked as deleted with “--D--” 20 row#2[7975] flag: ---D--, lock: 2, len=30 Before--> Delete Op--> After--> Before--> After-->
21.
© 2014 Pythian
Confidential21 21 FUNCTION-BASED INDEXES
22.
© 2014 Pythian
Confidential22 FUNCTION-BASED INDEX 22 create index functionbasedIDX on dgomez(upper(value)); insert into dgomez values (1,'deiby'); Leaf block dump =============== ….. ….. row#0[8017] flag: ------, lock: 0, len=15 col 0; len 5; (5): 44 45 49 42 59 ’DEIBY’(not ‘deiby’) col 1; len 6; (6): 01 40 00 83 00 00 ----- end of leaf block dump ----- • The same B-Tree structure and • The same behavior than B-Tree Indexes but with the values stored with the function applied.
23.
© 2014 Pythian
Confidential23 23 REVERSED-KEY INDEXES
24.
© 2014 Pythian
Confidential24 REVERSED-KEY INDEX 24 • The same B-Tree structure and • Every byte of the KEY is reversed . create index reversekeyIDX on dgomez(value) reverse; • 204 • 205 • 206 • 207 • 402 • 502 • 602 • 702
25.
© 2014 Pythian
Confidential25 REVERSED-KEY INDEX 25 • The same B-Tree structure and • Every byte of the KEY is reversed . create index reversekeyIDX on dgomez(value) reverse; row#0[8019] flag: ------, lock: 0, len=13 col 0; len 3; (3): 34 30 32<-The value col 1; len 6; (6): 02 40 00 87 00 04<-RowID row#1[8006] flag: ------, lock: 0, len=13 col 0; len 3; (3): 35 30 32 col 1; len 6; (6): 02 40 00 87 00 05 row#2[7993] flag: ------, lock: 0, len=13 col 0; len 3; (3): 36 30 32 col 1; len 6; (6): 02 40 00 87 00 06 row#3[7980] flag: ------, lock: 0, len=13 col 0; len 3; (3): 37 30 32 col 1; len 6; (6): 02 40 00 87 00 07 ----- end of leaf block dump ----- 34 30 32 => 4 0 2 35 30 32 => 5 0 2 36 30 32 => 6 0 2 37 30 32 => 7 0 2 But not… 204 205 206 207
26.
© 2014 Pythian
Confidential26 26 INDEXES ON VIRTUAL COLUMNS
27.
© 2014 Pythian
Confidential27 INDEXES ON VIRTUAL COLUMNS 27 create table dgomez( value1 varchar(10), value2 varchar2(10), result as (value1||value2)); row#0[8017] flag: ------, lock: 0, len=15 col 0; len 5; (5): 64 65 69 62 79 <--deiby col 1; len 6; (6): 01 40 00 87 00 00 <---ROWID ----- end of leaf block dump ----- create index vcolumn on dgomez(result); insert into dgomez (value1,value2) values ('dei','by'); • The same B-Tree structure • The dynamic value of KEY is stored physically. • A change on dependent column will update the Index
28.
© 2014 Pythian
Confidential28
Download now