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Oracle 11g Hints Overview
 
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In this Video tutorial we will discuss about Optimizer hints in Oracle. What is optimizer hint, when & why its needed. Different Category of hints. Description of mostly used hints. Demonstrate how query plan can change with the influence of hint.
Views: 53218 Anindya Das
Oracle Hints Tutorial for improving performance
 
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Oracle Hints Tutorial for improving performance APPEND PARALLEL JOIN INDEX NO_INDEX SELECT /*+ FIRST_ROWS(10) */ * FROM emp WHERE deptno = 10; SELECT /*+ ALL_ROWS */ * FROM emp WHERE deptno = 10; SELECT /*+ NO_INDEX(emp emp_dept_idx) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; SELECT /*+ INDEX(e,emp_dept_idx) */ * FROM emp e WHERE e.deptno = 10; -- SELECT /*+ INDEX(scott.emp,emp_dept_idx) */ * FROM scott.emp; SELECT /*+ AND_EQUAL(e,emp_dept_idx) */ * FROM emp e; SELECT /*+ INDEX_JOIN(e,emp_dept_idx) */ * FROM emp e; SELECT /*+ PARALLEL_INDEX(e,emp_dept_idx , 8) */ * FROM emp e; SELECT /*+ LEADING (dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; SELECT /*+ PARALLEL(8) CACHE (e) FULL (e) */ * FROM emp e ; SELECT /*+ PARALLEL FULL (e) */ * FROM emp e ; SELECT /*+ PARALLEL USE_MERGE (emp dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; -- SORT Merge Join SELECT /*+ PARALLEL USE_HASH (emp dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; -- Hash Join SELECT /*+ PARALLEL */ * FROM emp e ; INSERT /*+ APPEND */ INTO mytmp select /*+ CACHE (e) */ *from emp e; commit;
Views: 8510 TechLake
SQL: Optimizer Hints Part-1
 
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In this tutorial, you'll learn...what are optimizer hints and how to use it.. SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
Views: 20449 radhikaravikumar
Oracle Hints Tutorial for improving performance with examples
 
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Oracle Hints Tutorial for improving performance with examples Oracle Hints Oracle Tutorial for beginners SQL Tutorial for beginners SQL Hints SQL Performance tuning
Views: 3881 TechLake
Hints
 
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Hints watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
[Oracle SQL Performance Tuning: 4/4] Basic Hints and their Usage
 
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This presentation explains how to use basic hints of Oracle. The series of SQL tuning videos presents performance tuning tips for developers. For presentation used in this video, please visit: https://drive.google.com/drive/folders/0B6EDqGZwjejmWng5VWM3ZEtaNzA?usp=sharing
Views: 10970 anilkumar ghorakavi
SQL: Optimizer Hints Part-2
 
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In this tutorial, you'll learn...what are optimizer hints and how to use it.. SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
Views: 11806 radhikaravikumar
Oracle Hints explained
 
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Oracle Hints
Views: 537 Telugu Blast News
Why Use Parallel Processing?
 
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This video compares the use of parallel and serial processing for the same SQL query. 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.
77/125 Oracle PLSQL: Design consideration  / NOCOPY Hint 1
 
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Calling by reference and calling by value Using NOCOPY hint تعلم اوراكل حتى الاحتراف
Views: 564 khaled alkhudari
78/125 Oracle PLSQL: Design consideration  / NOCOPY Hint 2
 
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Learn Oracle PLSQL EXAM 1Z0-144 ------------------------------------------------------ create or replace package nocopy_test is type number_t is table of varchar2(32767) index by binary_integer; procedure pass_by_vale(nums in out number_t); procedure pass_by_refernce(nums in out nocopy number_t); procedure init; end; ------------------------------------------------------------------------- create or replace package body nocopy_test is l_numbers number_t; c_array_size number:=1000000; c_it number:=20; procedure pass_by_vale(nums in out number_t) is indx pls_integer; begin indx:=nums.count; end; procedure pass_by_refernce(nums in out nocopy number_t) is indx pls_integer; begin indx:=nums.count; end; procedure init is begin l_numbers.delete; for i in 1..c_array_size loop l_numbers(i):='s'||i; end loop; dbms_output.put_line('start '||to_char(sysdate,'hh:mi:ss') ); for i in 1..1000 loop pass_by_vale(l_numbers); end loop; dbms_output.put_line('end '||to_char(sysdate,'hh:mi:ss') ); dbms_output.put_line('start '||to_char(sysdate,'hh:mi:ss')); for i in 1..1000 loop pass_by_refernce(l_numbers); end loop; dbms_output.put_line('end '||to_char(sysdate,'hh:mi:ss')); end; end; ----------------------------------------- begin nocopy_test.init; end;
Views: 495 khaled alkhudari
019-Oracle SQL 12c: Using Conversion Functions 1
 
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تعلم اوراكل حتى الاحتراف تعلم اوراكل من الصفر
Views: 4198 khaled alkhudari
Using the qb_name Hint in Oracle Database
 
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Oracle ACE Ric Van Dyke shares a tip on using the qb_name hint in Oracle Database, and on how naming query blocks can make debugging a lot easier.
Views: 137 ArchBeat Archive
Using Hint Parallel
 
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Cơ sở dữ liệu nâng cao
Views: 270 h2a
Static SQL Hint
 
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How to set a Hint for Static DB2 SQL.
Introduction to Basics of a Query Hint - SQL in Sixty Seconds #013
 
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This video explains the fundamentals of the SQL Server Query Hints. Visit http://bit.ly/KH9u8I for Script, Quiz and further learning.
Views: 8943 Pinal Dave
Hint DRIVING_SITE para otimizar SQL distribuído
 
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Aprenda a otimizar SQL distribuído utilizando o hint DRIVING_SITE
Views: 250 Fabio Prado
(오라클힌트교육,SQL튜닝)오라클힌트를 이용한 쿼리 튜닝, 중첩루프조인유도힌트, oracle hint/ordered/use nl_
 
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Hints for Join Orders(USE_NL) - USE_NL 힌트는 테이블을 조인 하는 경우 중첩 루프 조인(Nested Loop Join)이 일어나도록 하는 힌트 문장이다. 중첩 루프 조인은 중첩반복 이라고도 하는데 하나의 테이블(outer/driving table)에서 추출된 ROW를 가지고 일일이 다른 테이블(inner/probed table)을 반복해서 조회하여 찾아지는 레코드를 최종 데이터로 간주하는 방법 이다. - EMP 테이블과 DEPT 테이블을 조인하는 경우 DEPT 테이블이 건수가 작다면 우선 이 테이블을 외부 루프로 해서 하나씩 읽으면서 이에 대응하는 EMP 테이블의 데이터를 추출 하는 경우가 중첩 루프 조인에 해당 한다. 이때 EMP 테이블의 경우 대부분 조인 칼럼에 인덱스를 이용하는 것이 성능상 좋다. 즉 중첩 루프 조인은 테이블 중 적어도 하나의 조인 컬럼에 대해 인덱스(or Hash Index)가 존재할 때 연관되는 방식으로 이 중첩 루프 조인에서 테이블 중 하나의 테이블 또는 중간 결과 셋을 대상으로 FULL SCAN이 일어나게 된다.  보통 USE_NL 힌트 구문은 ORDERED 힌트 구문과 같이 사용되는데 USE_NL이 취하는 인자는 FROM절에서 두 번째 나오는 테이블(비드라이빙 테이블, inner/probed table)을 명시해 주어야 한다. 인수로 사용되지 않은 첫 번째 테이블이 드라이빙 테이블(outer table)이 된다. Hints for Join Orders(ORDERED)  힌트는 FROM 뒤에 기술되는 테이블의 순서대로 조인이 일어나도록 해주는 구문이며 대부분 단독으로는 사용되지 않고 USE_NL(중첩 루프 조인을 유도), USE_MERGE(머지 소트 조인을 유도), USE_HASH(HASH 조인을 유도)등과 같이 사용된다.  USE_NL/USE_MERGE/USE_HASH등의 인자로 사용되는 테이블은 FROM절에서 두 번째로 나타나는 테이블 이어야 하는데 FROM절에서 처음 나타나는 테이블이 드라이빙 테이블(OUTER/DRIVING TABLE)이 되고 나중에 나타나는 테이블이 PROBED TABLE(INNER TABLE)이 된다. 보통 드라이빙 테이블의 경우 데이터 건수가 적거나 조인 칼럼에 대해 인덱스가 없는 테이블이 주로 사용된다.  중첩 루프 조인(Nested Loop Join)이나 해시조인(Hash Join)의 경우 성능이 FROM절 뒤에 나타나는 테이블의 순서에 영향을 받지만 MERGE 조인은 영향을 받지 않는다. 머지 조인은 메모리에 올려서 정렬 시킨 후 병합하니까 실행 계획은 다르게 나올지 모르지만 성능에는 관계 없다.
Views: 209 이종철
Oracle SQL Tuning Training  Demo Video
 
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http://www.dbvidya.com/course/sql-tuning-advanced/ [email protected] +91 991 2323 000 Oracle Performance Tuning Online Training : http://www.dbvidya.com/course/performance-tuning-for-dba/ Oracle SQL Performance Tuning Training Online : http://www.dbvidya.com/course/sql-tuning-advanced/ Oracle Performance Tuning Videos Tutorial for DBA and Developers : http://www.dbvidya.com/oracle-performance-tuning-videos/ Oracle AWR Tutorial: http://www.dbvidya.com/course/oracle-awr/ Erwin Tool Online Training : http://www.dbvidya.com/course/erwin-tool/ ER Data Modeling Course : http://www.dbvidya.com/course/er-modeling/ Dimensional Modeling Training Online : http://www.dbvidya.com/course/dimensional-modeling/ Oracle Database Blogs : http://www.dbvidya.com/blog/
Views: 10725 DbVidya
Oracle Performance - Result Cache Exercises
 
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Oracle Performance - Result Cache Exercises
Views: 744 The Silent DBA
Use NOCOPY to Improve Performance
 
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The NOCOPY parameter hint tells the PL/SQL compiler to pass OUT and IN-OUT parameters "by reference" (meaning: do not copy in, nor copy out). The result is better performance and reduced PGA consumption. ====================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. 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 or merchantability, fitness for a particular purpose, and non-infringement.
SQL: Optimizer Hints Part-3
 
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In this tutorial, you'll learn...what are optimizer hints and how to use it.. SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
Views: 10605 radhikaravikumar
Hints and Tips - Self documenting SQL
 
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Good quality code stands alone, in that its purpose and function can be gleaned from the code itself without supporting documentation. This is not to say supporting commentary is not useful - its more a reflection on the quality that we aspire to get from the code itself. But can we apply that same principle to the SQL we write ? Yes, we can. ====================================================== Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. 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 or merchantability, fitness for a particular purpose, and non-infringement.
Views: 3033 Connor McDonald
PL/SQL Tutorial  4 :  PLSQL Procedures %Type, %ROWTYPE & NOCOPY
 
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PLSQL Tutorial For Beginners 4 : PLSQL Procedures %Type, %ROWTYPE & NOCOPY SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 1117 TechLake
04 05 NOCOPY hint
 
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Views: 1195 Chanon Hemtanon
ORACLE SQL  Optimizer Hints with example
 
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ORACLE SQL Optimizer Hints with example
Views: 85 Gees info
Oracle Parallelism Concepts
 
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Oracle Parallelism Concepts
Views: 2116 The Silent DBA
Oracle || Indexes Part-1 by dinesh
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS ,ADF,INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
[엑셈아카데미]SQL 튜닝의 시작 1회 - SQL튜닝의 개념
 
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[엑셈아카데미] SQL튜닝의시작1회. 김철환 책임컨설턴트의 Upgrade된 교육을 만나보세요. 세미나를 통해 보다 쉽게 SQL 튜닝의 원리를 이해하고 진정한 SQL 튜닝의 세계에 첫 걸음을 내딛으시길 바랍니다. ^^*
Views: 6298 엑셈TV
Oracle Parallel Execution Plans Deep Dive
 
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A presentation about understanding the essentials of Oracle Parallel Execution and how to read the corresponding execution plans
Views: 3118 Randolf Geist
Oracle Hints - FIRST_ROWS - Example
 
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Excerpt from "Oracle sql tuning-advanced" video tutorial training. www.dbvidya.com/course/sql-tuning-advanced/ [email protected] +91 991 2323 000 Oracle Performance Tuning Online Training : http://www.dbvidya.com/course/performance-tuning-for-dba/ Oracle SQL Performance Tuning Training Online : http://www.dbvidya.com/course/sql-tuning-advanced/ Oracle Performance Tuning Videos Tutorial for DBA and Developers : http://www.dbvidya.com/oracle-performance-tuning-videos/ Oracle AWR Tutorial: http://www.dbvidya.com/course/oracle-awr/ Erwin Tool Online Training : http://www.dbvidya.com/course/erwin-tool/ ER Data Modeling Course : http://www.dbvidya.com/course/er-modeling/ Dimensional Modeling Training Online : http://www.dbvidya.com/course/dimensional-modeling/ Oracle Database Blogs : http://www.dbvidya.com/blog/
Views: 222 DbVidya
Efficient Function Calls From SQL (Part 2) : The DETERMINISTIC Hint
 
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The second part of a mini-series of videos showing how you can improve the performance of function calls from SQL. In this episode, we take a look at the DETERMINISTIC hint. For more information see: https://oracle-base.com/articles/misc/efficient-function-calls-from-sql#deterministic-hint Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Dana Singleterry : Blog: https://blogs.oracle.com/dana/ Twitter: https://twitter.com/dsingleterry Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 2413 ORACLE-BASE.com
Oracle: Tune Your SQL Without Hints or Indexes! - Long Introduction
 
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"But I can’t change the queries that run in my database,” you say. Not a problem! This webinar we explore the underutilized art of rewriting a SQL query in order to make it run faster. I'll show you how to make your SQL query performance skyrocket simply by changing the SQL text. But even if you truly can't change the SQL, I'll also demonstrate how you can hurdle this issue too. This webinar will be presented by our most active OraPub SLACK member, Kaley Crum! To watch the full webinar go to www.oraoub.com/webinars
Views: 54 OraPub, Inc.
Oracle Database Hints Tuning Tips Presentation Video Oracle DB
 
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For a quick reference on oracle visit http://PocketORACLE.blogspot.com
Views: 5065 TheEzguide
OracleTutorial || onlinetraining|| pl/sql ||Parameters Part-1 by Basha
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS ,ADF,INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
SQL * Loader Tutorial 4 : SQL Loader Insert options INSERT, APPEND , REPLACE and TRUNCATE
 
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SQL * Loader Tutorial 4 : SQL Loader Insert options INSERT, APPEND , REPLACE and TRUNCATE SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL SQL Tutorial PL SQL Tutorial for beginners PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 705 TechLake
Oracle Explain Plans-Explain Plan Hints and Reading Plans
 
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Oracle Explain Plans-Explain Plan Hints and Reading Plans http://www.informit.com/promotions/webcast-understanding-oracle-explain-plans-140966 Watch an excerpt from trainer Dan Hotka on Explain Plan Hints and Reading Plans. The full video shows you how to work with Explain Plans, then goes into considerable detail about exactly how Oracle arrives at an Explain Plan. Dan has a thorough understanding of how the Cost-Based Optimizer works, and shares that knowledge in this presentation. You will gain valuable insights as to how Oracle processes SQL, and many tips on how to improve SQL performance. This presentation is a must-see for anyone doing SQL tuning. http://www.informit.com/promotions/webcast-understanding-oracle-explain-plans-140966
Views: 401 InformIT
Hints and Tips - SQL*Plus tricks
 
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It's been around forever... but that does not make it obsolete. Here's how you can get the most out of SQL*Plus ========================================­­============== Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. 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 or merchantability, fitness for a particular purpose, and non-infringement.
Views: 3377 Connor McDonald
Parallelism in SQL
 
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Parallelism in SQL watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
Using Parallel and Cardinal Hint
 
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This is a demo on using Parallel and Cardinal Hint to tune queries in ILM.
Views: 1324 Informatica Support
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: 18216 radhikaravikumar
SQL: Explain Plan for knowing the Query performance
 
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In this tutorial, you'll learn how to compare queries to know the better performance query..
Views: 99492 radhikaravikumar
How to Install Oracle SQL Developer
 
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Views: 187 T3SO Tutorials
Oracle SQL Tuning - How to Read Execution Plans (Explain Plan)
 
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In this free tutorial you will learn how to generate and read (interpret) an execution plan in Oracle Databases. See more FREE Oracle Tuning tutorials at http://skillbuilders.com/free-oracle-tutorials. Understanding what the Oracle Database does with your SQL is essential to tuning - and the execution plan is the key. Oracle Certified Master DBA John Watson will provide a brief introduction (4 minutes) - which includes John's tuning methodology, then demonstrate EXPLAIN PLAN, SQL*Plus AUTOTRACE and DBMS_XPLAN.DISPLAY_CURSOR. In the tutorial, John will teach you: - How to read an execution plan - Find the 1st step in the plan - Decipher the order of the steps in the plan - That EXPLAIN PLAN can be very misleading Prerequisites: To get the most from this tutorial, you should: 1 Know how to code SQL 2 Be familiar with SQL*Plus 3 Know - in very general terms - what an execution plan is. 4 Have a basic understanding of the Library Cache (this is where Oracle Database stores parsed SQL statements) 5 Have a basic understanding of the Cost Based Optimizer (this is the part of the database that parses your SQL, creates an execution plan. Hopefully the correct - most efficient - plan).
Views: 66296 SkillBuilders
11g Nested Loop
 
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#Oracle #NestedLoop 11g Enhancement
Views: 864 Hemant K Chitale
Webinar: Ten (Other) Top Tips for Improving PL/SQL Performance
 
01:08:03
Bulk processing (FORALL and BULK COLLECT), along with the function result cache, are the "big ticket" items when it comes to performance optimization with PL/SQL. But there's still more we can do to tweak our code for even better response times for our users. This third webast in the series starts with the automatic compiler optimization, showcases the extraordinary speediness of PGA data manipulation (a.k.a., package variables), and demonstrates the effect of the simple NOCOPY hint. We finish up with an introduction to pipelined table functions and some thoughts on optimizing your algorithms.
Views: 10692 ODTUG
Hints and Tips - Synthesizing rows inside Oracle
 
06:55
You've already got a gazillion rows inside your Oracle Database table. So why would you want to generate even more rows ? Well, it’s a common need as you'll see in this quick tip, which more to the point shows you how to do it easily and efficiently with SQL ====================================================== Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. 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 or merchantability, fitness for a particular purpose, and non-infringement.
Views: 1962 Connor McDonald