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Optimizer Statistics
 
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Optimizer Statistics watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
ORACLE WORLD - Understanding Oracle Optimizer Statistics part-1st
 
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Hello friends in this video i'm just showing to you what is optimizer statistics into oracle,optimizer help to improve the performance of sql statements during execution period.Oracle database Unbeatable,Unbreakable Platform..
Views: 6598 Oracle World
SQL: Introduction to Optimizer in Oracle
 
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In this tutorial, you'll know what is the meaning and use of Optimizer in Oracle
Views: 17118 radhikaravikumar
Oracle Database Performance Tuning - Optimizer Statistics Gathering
 
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In this video we explain how to gather the database optimizer statistics #performancetuning, #oracledatabase, #oracle, #database, #optimizerstatistics, #learning, About Optimizer Statistics Collection In Oracle Database, optimizer statistics collection is the gathering of optimizer statistics for database objects, including fixed objects. The database can collect optimizer statistics automatically. You can also collect them manually using the DBMS_STATS package. Purpose of Optimizer Statistics Collection The contents of tables and associated indexes change frequently, which can lead the optimizer to choose suboptimal execution plan for queries. To avoid potential performance issues, statistics must be kept current. To minimize DBA involvement, Oracle Database automatically gathers optimizer statistics at various times. Some automatic options are configurable, such enabling AutoTask to run DBMS_STATS. Stats collection Stats gathering database performance tuning, 10g, 11g 12c database administration
Views: 63 KINGS TUBE
Oracle Database 12c: Enhanced Optimizer Statistics with Tom Kyte
 
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Tom Kyte discusses enhanced optimizer statistics followed by a demo of on-load statistics gathering in Oracle Database 12c. "Online Statistics Gathering for Bulk Loads" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=TGSQL344 "Histograms" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=TGSQL366 "CREATE TABLE ... AS SELECT" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=DWHSG8317 "CREATE TABLE" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=SQLRF01402
Views: 7707 OracleDBVision
Oracle Performance - DBMS_STATS
 
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Oracle Performance - DBMS_STATS
Views: 3876 The Silent DBA
ORACLE WORLD - Understanding Oracle Optimizer Statistics part-2nd
 
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Hello friends in this video i'm just showing to you what is optimizer statistics into oracle,optimizer help to improve the performance of sql statements during execution period. Oracle database Unbeatable,Unbreakable Platform.
Views: 2264 Oracle World
Oracle Performance Tuning - Oracle Enterprise Manager - Understanding Statistics
 
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Connect with me or follow me at https://www.linkedin.com/in/durga0gadiraju https://www.facebook.com/itversity https://github.com/dgadiraju https://www.youtube.com/c/TechnologyMentor https://twitter.com/itversity
Views: 4171 itversity
0302 About Optimizer Statistics
 
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ORACLE
Views: 81 oracle ocm
VTS: The Oracle Optimizer...Great complexity, but...
 
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Oracle Ace Liron Amitzi presents an entertaining session about appreciating the Oracle Optimizer; exploring the stability of plans and examining new features that ruin your system performance, just when you get it tuned just right.
Views: 563 Database Community
Ahmed Jassat - Oracle Ebus Gather Schema from 3 hours to 3 minutes
 
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Ahmed Jassat - Oracle Ebus Gather Schema from 3 hours to 3 minutes
Views: 970 Ahmed Jassat
Oracle tutorial : Using execution plan to optimize query in oracle
 
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Oracle tutorial: Explain plan for query optimization in Oracle PLSQL oracle tutorial for beginners using execution plan to optimize query sql query analyzer sql query cost analysis https://techquerypond.wordpress.com This oracle tutorial show you how to use EXPLAIN PLAN in oracle. This video covers how to check cost of the query from DBMS_XPLAN.DISPLAY . You can find the cost of the query using the Using EXPLAIN PLAN FOR and based on the result you can optimize the query for faster performance. Subscribe on youtube: https://www.youtube.com/channel/UCpiyAesWNYOXSz5GPq8lbkA For more tutorial please visit #techquerypond https://twitter.com/techquerypond
Views: 8832 Tech Query Pond
How to gather session stats using Session Built In Variable.
 
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How to gather session stats using Session Built In Variable? Use session built in variable at command or email component of a respective task's command tab.
Views: 1716 Mandar Gogate
Statistics and Query Plans
 
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If you want to tune queries, you have to look at query plans and you have to understand what they’re showing you. One thing people look for when tuning is “bad cardinality estimates”. If you’ve wondered what that means, and you want to understand how the optimizer uses statistics when creating a query plan, then join me for this session on statistics and query plans. We’ll set the stage with a review of what statistics are, then see how the optimizer uses them and where to find that “cardinality estimate” information in a plan. We’ll also cover the various ways statistics can be updated, explore what happens to plans when those updates occur, and ultimately you will see why understanding how it all works is critical when you’re troubleshooting performance issues. Expect lots of demos so you can truly understand what statistics are, how they're used, and why their management is so essential for good performance.
Views: 66 Sarah H
DB Statistics
 
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Views: 1132 chaitanya kumar
0303 Gathering Statistics
 
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ORACLE
Views: 1552 oracle ocm
Libguide v2 Gathering Stats
 
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A short video on how to gather usage statistics in LibGuides v2
Views: 130 Lisa Hastings
Query Analysis and Optimizing in Oracle
 
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Database Management Systems 11. Query Analysis and Optimizing in Oracle ADUni
Views: 82717 Chao Xu
Oracle Cost Based Optimizer Basics
 
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When it comes to writing efficient queries there are a few key concepts that need to be understood. One of them is the Oracle Cost-Based Optimizer (CBO). Although it's called a cost-based optimizer it's actually not the cost we need to focus on primarily to understand why the optimizer makes certain decisions. In this webinar, you will learn the basics of the CBO, see why it is crucial that the optimizer's picture of the data fits reality, why cardinality and selectivity estimates matter so muc
Views: 58088 Redgate Videos
Oracle's Elixir Founder talks creating the No. 1 LoL Esports Statistics + Analytics Website
 
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MarkZ sits down for an interview with Tim "Magic" Sevenhuysen, a man who has been working behind the scenes to provide important statistics and analytical tools for analysts, coaches, the media, and more in the world of League of Legends esports. Among those in the LoL esports field, Oracle's Elixir has become the go-to place to obtain League of Legends statistics which have become increasingly valuable as teams delve into the numbers to help give their players an extra edge. Statistics from the website are regularly referenced by broadcasters, writers, and players. The site is often referenced and featured on the LCS, LCK, LMS, CBLoL, and Intel Extreme Masters broadcasts to name a few places where the data is put to use. Connect with us for more content: League of Legends Videos: https://goo.gl/MoeSRf Overwatch Videos: https://goo.gl/XhAe5O Esports Chatter: https://goo.gl/Uk07gI PROFiles Videos: https://goo.gl/fqMp7e Website: http://www.akshonesports.com Facebook: https://www.facebook.com/akshonesports/ Instagram: https://www.instagram.com/akshonesports/ Twitter: https://twitter.com/akshonesports You can follow Tim and his work here: https://oracleselixir.com Twitter: https://goo.gl/ZHZN7K
Why do you need the Oracle Database Optimizer?
 
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Presentations explains the essential idea of the Oracle Database Optimizer
Views: 4401 Jean-Francois Verrier
Statistics in Oracle and SQL Server
 
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The better the information that Oracle and SQL Server have about the data in a database, the better choices they can make on how to execute the SQL. Statistics are Oracle's and SQL Server's chief source of information. If this information is out of date, performance of queries will suffer. In their third live 'Oracle vs. SQL Server' discussion, Jonathan Lewis (Oracle Ace Director, OakTable Network) and Grant Fritchey (Microsoft SQL Server MVP) will look at statistics in Oracle and SQL Server. Do Oracle and SQL Server gather the same information? What does each optimizer use this information for? And how can Oracle and SQL Server administrators override the defaults for better (or worse) performance? These are just some of the questions that Jonathan and Grant will try to answer in another not-to-be-missed session. As before, this will be a live discussion with limited supporting slides, and will conclude with a Q+A session with Jonathan and Grant. Be prepared for a lively exchange that will not only entertain, but will teach you key concepts on Oracle and SQL Server. For our complete archive please go to http://www.red-gate.com/oracle-webinars
Views: 2335 Redgate Videos
Stats lesson 1   Gathering Data
 
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MBF3C - Statistics Lesson 1 - Mrs. Meyers
Views: 1508 MrsLZarate
Ask TOM Office Hours: Prepare Optimizer for Proof of Concept or Benchmark
 
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Held on May 1 2018 If you are running an Oracle Database proof of concept or benchmark focusing on performance, what optimizer settings should you use? What statistics do you need to gather and how should you gather them? In this session Nigel Bayliss shows how you can get consistent results and avoid burning time chasing problems. Covers Oracle Database 12c Release 1 onwards. 3:55 The Adaptive Optimizer (12.1) 8:44 The Mechanics of Adaption 12:03 Adaptive Optimizer Settings 16:18 Recommended Defaults 18:53 12.1 Proof of Concept Recommendations 21:26 12.2+ Proof of Concept Recommendations 34:35 Regathering Statistics 42:24 Dynamic Sampling and Parallel 44:55 More General Recommendations AskTOM Office Hours offers free, monthly training and tips on how to make the most of Oracle Database, from Oracle product managers, developers and evangelists. https://asktom.oracle.com/ https://developer.oracle.com/ https://cloud.oracle.com/en_US/tryit music: bensound.com
Views: 180 Oracle Developers
12c Adaptive Optimization - Kerry Osborne
 
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One of the most interesting new features of the Oracle Database Optimizer is the ability to recognize its own mistakes and use execution statistics to automatically improve execution plans. Oracle calls this "Adaptive Optimization" and this talk will focus on how it works. More webinars at: http://www.red-gate.com/oracle-webinars
Views: 6795 Redgate Videos
Oracle SQL Performance Tuning  1
 
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Oracle SQL Performance Tuning and tips Cost Based Optimizer (CBO) Rule Based Optimizer (RBO) SQL Explain Plan Oracle Explain Plan
Views: 9333 TechLake
ORACLE WORLD-Understanding Oracle Optimizer plans part-3rd
 
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Hello friends in this video i'm just showing to you what is optimizer statistics into oracle,optimizer help to improve the performance of sql statements during execution period.
Views: 1507 Oracle World
How is SQL Server Statistics Histogram Computation Used by The Query Optimizer – Part 1
 
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In this video, you will understand how is the histogram computation (SQL Server Statistics Data) used by the Query Optimizer for cardinality estimation. Particularly, you will see the usage of EQ_ROWS & AVG_RANGE_ROWS. Video resources including presentation, demo files, code snippets and more learning material is available on http://www.dataplatformgeeks.com/ (Join for free and access all the resources) Connect With The Speaker (Amit Bansal) -Follow on Twitter: https://twitter.com/A_Bansal -Follow on FaceBook at http://www.facebook.com/amit.r.bansal -Follow on LinkedIN: http://www.linkedin.com/in/amitbansal2010 -Facebook Page: https://www.facebook.com/AmitRSBansal/ Connect with SQLMaestros: http://sqlmaestros.com/ -http://www.twitter.com/SQLMaestros -https://www.facebook.com/SQLMaestros -Email us: [email protected] Have technical questions? Join the largest SQL group on FB www.facebook.com/groups/theSQLGeeks Our LinkedIn group https://www.linkedin.com/groups/6753546 DataPlatformGeeks (DPG) Community Join the fastest growing community of data & analytics professionals Why Join DPG? http://www.dataplatformgeeks.com/ -Attend all events hosted by DPG, including SQLMaestros Special Events -Get access to free videos, labs, magazines and host of learning resources -Download all events & conference material -Learn new skills. Sharpen existing skills -Be part of Asia’s Largest Data/Analytics Community -Opportunity to be a regional mentor & speaker at our events -Immense technical & professional development Do you know about Data Platform Summit? http://www.DPS10.com
Views: 394 SQLMaestros
Oracle Cost Based Optimizer Advanced Session
 
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Presented by Randolf Geist 01 August 2012 Summary Building on the previous Cost-Based Optimizer Basics webinar, in this almost "zero-slide" session we'll explore different aspects of the Cost-Based Optimizer that haven't been covered or only mentioned briefly in the 'basics' session. This is a continuous live demonstration including topics like: Clustering Factor, Histograms, Dynamic Sampling, Virtual Columns, Daft Data Types and more. If you've ever asked yourself why a histogram can be a threat to database performance and why storing data using the correct data type matters regarding Execution Plans then this session is for you. It is recommended, although not required, to watch the recording of the 'basics' webinar first. A live Q+A session with Randolf Geist will follow the presentation. For our complete archive, and to sign up for upcoming webinars please go to http://www.red-gate.com/oracle-webinars
Views: 6580 Redgate Videos
How to Gather SQL Resource Consumption Metrics in Oracle
 
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Presented by Karen Morton Tues 8th May 2012 Summary SQL is utilized to return data via our applications to service user requests. Whether it's a single customer lookup or a huge month end summary report, the SQL we write must gather the correct data and return it to the user. Ensuring that the SQL you write can do this in a timely and efficient manner, both now and in the future, requires that you measure and evaluate what resources your query must use. In this webinar, we'll cover several methods for how to collect data that show you precisely how your SQL consumes resources: Using AUTOTRACE Using DBMS_XPLAN.DISPLAY_CURSOR Using Report SQL Monitor Using ASH (Active Session History) and AWR (Automatic Workload Repository) data You'll learn how to utilize the data to understand the work your SQL is doing and the resources it consumes; identify currently evident performance issues as well as areas that could be problematic in the future; and modify your SQL to use less resources more efficiently while still returning the desired results. A live Q+A session with Karen Morton follows the presentation. For our complete archive, and to sign up for upcoming webinars please go to http://www.red-gate.com/oracle-webinars
Views: 7067 Redgate Videos
[Oracle EBS Performance Tuning: 2/4 ] Gathering Performance Diagnostics for Oracle EBS
 
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Multiple ways of collecting diagnostics for troubleshooting performance issues. The series of SQL tuning videos presents performance tuning tips for developers
Views: 4437 anilkumar ghorakavi
Lock and Unlock table statistics in Oracle Database
 
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Lock and Unlock table statistics in Oracle Database
Statistics Foundations
 
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SQL Master Training Carlos Sierra - Statistics Foundations
Views: 504 NoCOUG Channel
Are my index statistics wrong?  Why does NUM_ROWS equal zero?
 
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blog: connor-mcdonald.com Highlights from the April DBA Office Hours session. Office Hours is 100% free Q&A sessions held every month by Oracle experts to help you succeed with the Oracle suite of technologies. Music: Smells Like Summer - Del (Vlog Music No Copyrighted) Video Link: https://youtu.be/IrkMsqcOjGU
Views: 258 Connor McDonald
Oracle Optimizer Performance Monitoring And Tuning 2 of 3
 
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In this tutorial you will learn advanced oracle tuning techniques for the optimizer.
Views: 449 DBA Pro
Migrate a 1TB Datawarehouse in 20 Minutes (Part 2)
 
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In part 2 of the "Migrate a 1TB Datawarehouse in 20 Minutes" video series, Andrew Holdsworth, Senior Director of Oracle's Real World Performance (RWP) team, shows the most efficient methods for gathering optimizer statistics against the 1TB of data loaded onto an Oracle Exadata Database Machine. Copyright © 2012 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.
0301 Overview
 
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ORACLE
Views: 17 oracle ocm
Oracle Tutorial - How to add virtual column in oracle 11g
 
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Hello friends in this video i'm going to demonstrate you how to add virtual column in ORACLE 11g step by step. Oracle 11g supports virtual columns which are derived from the other columns in the table. You can use the virtual columns in your queries, you can index them, you can collect the statistics, etc. There are few restrictions on the virtual columns. You cannot write/insert the data into virtual columns. There is no support for index_organized, external, object, cluster, temporary tables.
Views: 1298 OCP Technology
Analyze Tables
 
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Views: 80 Jennifer Pottorff
The Optimum Histogram Utility DEMO 2- Maximize Oracle Performance and SQL Execution Efficiency
 
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Description Demonstration of the influence of the Optimum Histogram utilities on the estimation accuracy of the Oracle Optimizer in a 11.2.0.1 Oracle Database. Tests highlight the increase in estimation accuracy on the optimizer and impact on execution plan selection. Tests conducted against a numeric column in a heap table and execution plan results and statistics captured to indicate impact on the optimizers execution plan selection of the OHU histograms. IMPORTANT NOTE: This utility is not a substitute for oracle's dbms_stats which calculates highly valuable statistics for oracle objects. It is an add on utility that can be used on columns with skewed distribution. Please see demonstration one for overview of architecture
Views: 529 Doug Laughlin
Two Dudes and a Database
 
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Two Aussie Oracle ACE Alumni catch up in Perth at the end of a half-day session on database features and data clustering. blog: https://connor-mcdonald.com twitter: https://twitter.com/connor_mc_d Richard's Blog: https://richardfoote.wordpress.com Richard's Indexing Webinar: https://richardfooteconsulting.com/indexing-webinar/ Trivadis Performance Days: https://www.trivadis.com/en/training/performance-days-2018-tvdpdays Gather Plan Statistics hint: https://docs.oracle.com/en/database/oracle/oracle-database/18/tgsql/optimizer-statistics-concepts.html DBMS_REDEFINTION docs: https://docs.oracle.com/en/database/oracle/oracle-database/18/arpls/DBMS_REDEFINITION.html Subscribe for new tech videos every week Music: https://soundcloud.com/joakimkarud Any endorsement of non-Oracle products and/or companies in this video should not be viewed as an official endorsement from Oracle Corporation.
Views: 357 Connor McDonald
SQL Server Statistics – Are My Stats Objects Being Used?
 
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In this video, you will learn some quick techniques to identify which stats objects are being used by the SQL Optimizer. These techniques can help you in your query tuning endeavors. Video resources including presentation, demo files, code snippets and more learning material is available on http://www.dataplatformgeeks.com/ (Join for free and access all the resources) Connect With The Speaker (Amit Bansal) -Follow on Twitter: https://twitter.com/A_Bansal -Follow on FaceBook at http://www.facebook.com/amit.r.bansal -Follow on LinkedIN: http://www.linkedin.com/in/amitbansal2010 -Facebook Page: https://www.facebook.com/AmitRSBansal/ Connect with SQLMaestros: http://sqlmaestros.com/ -http://www.twitter.com/SQLMaestros -https://www.facebook.com/SQLMaestros -Email us: [email protected] Have technical questions? Join the largest SQL group on FB www.facebook.com/groups/theSQLGeeks Our LinkedIn group https://www.linkedin.com/groups/6753546 DataPlatformGeeks (DPG) Community Join the fastest growing community of data & analytics professionals Why Join DPG? http://www.dataplatformgeeks.com/ -Attend all events hosted by DPG, including SQLMaestros Special Events -Get access to free videos, labs, magazines and host of learning resources -Download all events & conference material -Learn new skills. Sharpen existing skills -Be part of Asia’s Largest Data/Analytics Community -Opportunity to be a regional mentor & speaker at our events -Immense technical & professional development Do you know about Data Platform Summit? http://www.DPS10.com
Views: 384 SQLMaestros
Statistics Good Practices
 
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SQL Master Training Class Carlos Sierra - Best Practices for Statistics
Views: 433 NoCOUG Channel
DB Optimizer - Karen Morton
 
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Karen Morton, Oracle ACE and performance tuning specialist, describes her experience using DB Optimizer at Fidelity Information Services (FIS). DB Optimizer has helped Karen discover problems that were previously undetected by native tools.
Oracle SQL Tuning - Explain Plan Lies?
 
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Do you use EXPLAIN PLAN to tune Oracle SQL? Does it always "tell the truth", or does it "lie". (Maybe it's not the whole truth!) In this free tutorial from SkillBuilders' Oracle Certified Master John Watson, you will learn why the execution plan generated by EXPLAIN PLAN can be misleading and what to do about it. After a brief lecture, John demonstrates exactly why. You'll hear about dynamic sampling, adaptive cursor sharing (11g), adaptive execution plans (12c) and of course, bind variables. John demonstrates how bind variables cause misleading execution plans using dbms_xplan.display and dbms_xplan.display_cursor. To get the most from this tutorial, you should have some understanding of hard parse, soft parse, cardinality, histograms. See all SkillBuilders FREE Oracle Database tutorials at http://www.skillbuilders.com/free-oracle-tutorials.
Views: 3233 SkillBuilders

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