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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: 9346 TechLake
BITMAP  and  BITMAP JOIN INDEX IN ORACLE explained
 
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The video explains BITMAP and BITMAP JOIN INDEX IN ORACLE and when you should create them on a column. BITMAP INDEXES should be dealt with carefully as they can lead to serious performance issues if the table is updated by multiple processes in parallel. Indexing Basics :https://www.youtube.com/watch?v=0X9bbtwTnuE&t=1095s Star and snowflake Schema :https://www.youtube.com/watch?v=Qq4yhhAk9fc&t=17s
Views: 5730 Tech Coach
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: 4306 TechLake
Create Cluster in Oracle/ عربي
 
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Cluster in oracle Database Create Cluster in oracle
Views: 4234 khaled alkhudari
Oracle Performance - Indexes
 
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Oracle Performance - Indexes
Views: 285 The Silent DBA
3 Dense and Sparse Indexing
 
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***Correction: Index records contain search key value and a pointer to the actual record on the disk.
Views: 3898 DGate Academy
Oracle SQL Programming - Sequences, Indexes & Synonyms
 
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Sequences are used to serialized fields, although in Oracle 12G the IDENTITY feature can be used (similar to other database systems). Indexes help us organize physical data in a way to increase efficiency; 3 types of indexes are explained in this video (Bitmap, B-Tree and Table). Finally, this video discusses synonyms, which allow the aliasing of object names in Oracle.
Views: 67 Brian Green
PL/SQL Oracle tutorial - Cursors - PL/SQL basics (Lesson 2)
 
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PL/SQL Oracle tutorial for beginners: CREATE CURSOR, OPEN and CLOSE CURSOR
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 parallelism
 
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Views: 169 Fatma Aksu
Hash Partitioning in Oracle
 
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The Video explains Hash partitioning in oracle and how it focuses on equal data distribution. It explains how hash partitioning uses partition joins to improve performance in VLDB by MPP.
Views: 7108 Tech Coach
How to Move Object from one Table Space to Another Table Space? | How to Rebuild the Index ?
 
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This Video will teach you How to Move Object one Table Space to Another | How to Rebuild the Index ? move table from one tablespace to another in oracle 11g oracle move schema to another tablespace oracle how to move objects to another tablespace oracle 11g move schema to another tablespace alter table move tablespace oracle 8i oracle move table script oracle move cluster to new tablespace oracle move table example rebuild index oracle script alter index rebuild online parallel oracle rebuild all indexes oracle index rebuild online vs offline oracle rebuild partitioned index index rebuild oracle best practice index rebuild script in oracle 11g
Views: 1139 Oracle PL/SQL World
Oracle Performance Tuning - Loading Data - 03 Using manual parallelism and changing initrans
 
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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: 892 itversity
When to use Oracle Database Bitmap Indexes Lesson 1
 
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This tutorial will identify some use cases for Oracle bitmap indexes, including some of the more advanced capabilities. See all lessons, free, at http://www.skillbuilders.com/when-to-use-oracle-bitmap-indexes. Indexing your Oracle Database for best performance? There are cases, depending on data structures and queries, where b-tree indexes are not useful (e.g. scan access paths perform inadequately). In these cases, bitmap indexes may be a better solution. Bitmap indexes are a powerful tool, but they need to be used with care. Inappropriate use may cause problems worse than those they solve. The tutorial covers somewhat more advanced cases such as using bitmap join indexes to denormalize a snowflake schema, and to enable star transformations in queries that join fact tables to several dimension tables. This training will benefit any Oracle DBA administering a Data Warehouse or VLDB and "power" developers working in same. Instructor: Oracle Certified Master DBA John Watson, SkillBuilders
Views: 675 SkillBuilders
[ORCLS01E02 ] Creating Oracle Database Objects Part 1
 
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Creating Oracle Database Creating Oracle table Primary key
Views: 285 joey de jesus
Using Parallel GROUP BY
 
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This video shows you the behavior of the GROUP BY clause when run in serial and in parallel. 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.
Oracle - Global is Local
 
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Views: 84 IFBTA
What is a Partition in Oracle and Type of Partitions , Range Partition
 
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What is Partition in Oracle and Type of Partitions Range Partition 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: 2941 TechLake
Oracle Virtual Column
 
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Oracle Virtual Column https://easy-learning-tech.blogspot.in/2018/05/virtual-column-in-oracle.html
Views: 145 Siva Academy
Stop Rebuilding Global Indexes! Oracle 12c Global Index Maintenance
 
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Stop rebuilding Global Indexes! Stop worrying about invalidating Global Indexes! Oracle 11g gave us "UPDATE GLOBAL INDEXES". 12c provides a huge improvement: orphaned_entries! In this tutorial, Oracle Certified Master John Watson demonstrates how 11g and 12c handle Global Index maintenance with orphaned entries and overnight maintenance job PMO_DEFERRED_GIDX_MAINT_JOB.
Views: 2612 SkillBuilders
Why Has an Index Broken My Query?
 
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Sometimes Oracle can give unexpected exceptions. This often happens when working with dates stored as strings. In this video, Chris investigates why adding an index to a varchar storing dates could cause a query to fail. He explains why this happens. Then he shows workaround to avoid this. You can download the scripts in this video from LiveSQL at: https://livesql.oracle.com/apex/livesql/file/content_CVN82PZQWQSUFYMOVKG0VI19T.html ============================ The Magic of SQL with Chris Saxon 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: 2996 The Magic of SQL
DBMS - Sparse vs. Dense Index
 
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DBMS - Sparse vs. Dense Index Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
Tracing Parallel Execution
 
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This video shows how to trace parallel executions. 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.
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
PL/SQL Collections
 
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Held on August 7 2018 Collections are PL/SQL's version of arrays and there are three types: associative arrays, nested tables, varrays. They are used in many performance features of PL/SQL, such as bulk processing, as well as table functions. Steven Feuerstein uses them all the time and thinks you should, too. He kicked off this Office Hours with some of his favorite collections features/usages, and then he and Chris Saxon answered questions on measuring PGA, executing DML in parallel, and more. 2:30 Steven's favorite collection things 3:20 First a little quiz! 7:56 Banish row-by-row SQL processing 14:06 String-indexed collections 17:19 Nested collections 20:42 Table functions 26:18 Q&A 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/ Oracle Developers portal: https://developer.oracle.com/ Sign up for an Oracle Cloud trial: https://cloud.oracle.com/en_US/tryit music: bensound.com
Views: 2205 Oracle Developers
Oracle Data Export and Import using DataPump expdp and impdp
 
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Oracle Data Export and Import using DataPump expdp and impdp
Views: 185744 Abbasi Asif
Parallel Execution Skew in less than four minutes
 
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Learn what I've published about the topic "Parallel Execution Skew" in this four minutes summary
Views: 639 Randolf Geist
How to Convert a Non-Partitioned Table to Partitioned using Oracle Database 12c R2
 
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Oracle Database 12c Release 2 New Feature! Learn how to convert a non-partitioned table to a partitioned table - Online! This new method - using ALTER TABLE MODIFY - is much simpler than DBMS_REDEFINITION. In this free tutorial from SkillBuilders and Oracle Certified Master DBA John Watson you'll see a demonstration of converting the table and the impact on the underlying table and indexes. See all our free Oracle Database Tutorials at http://www.skillbuilders.com/free-oracle-tutorials.
Views: 3579 SkillBuilders
Real-World Performance - 8 - Set Based Parallel Processing
 
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Check out the entire series on the Oracle Learning Library at http://www.oracle.com/goto/oll/rwp In this video, listen and watch Andrew Holdsworth, Vice President of Oracle Database Real-World Performance at Oracle Corporation, as he demonstrates how set based parallel processing affects performance. Copyright © 2014 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.
Oracle SQL Developer - Comparing SQL Execution Plans
 
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This is a short video about a feature in SQL Developer which alllow any DBA or developer to compare different execution plans of a SQL Statement. My Blog: https://navneetupnejadba.wordpress.com/ Slideshare: https://www.slideshare.net/navneetupneja1/sql-developer-powerful-free-tool-for-developers-and-dbas
Views: 284 Navneet Upneja
Oracle Database - Wait Event - Sequential Read Vs Scattered Read
 
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In this video you will learn about what is Sequential read and how is it different from Scattered read in an Oracle Database. The entire course can be purchased at https://www.udemy.com/oracle-database-troubleshooting-and-tuning Use Coupon Code - YOUTUBETT Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 1836 Ramkumar Swaminathan
Access Paths
 
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Access Paths watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
Oracle Star Transformation
 
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Oracle Star Transformation
Views: 246 The Silent DBA
Explaining the Explain Plan: Interpreting Execution Plans for SQL Statements
 
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Presenter: Maria Colgan, Oracle Corporation The execution plan for a SQL statement can often seem complicated and hard to understand. Determining if the execution plan you are looking at is the best plan you could get or attempting to improve a poorly performing execution plan can be a daunting task, even for the most experienced DBA or developer. This session examines the different aspects of an execution plan, from selectivity to parallel execution, and explains what information you should be gleaming from the plan and how it affects the execution. It offers insight into what caused the Optimizer to make the decision it did as well as a set of corrective measures that can be used to improve each aspect of the plan.
Views: 5649 ODTUG
SQL Server DBA Interview Questions and Answers | What is Link Server in SQL Server
 
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In this video you will learn how to answer this SQL Server DBA interview Questions "What is link Server? Can link server be created for Oracle from SQL Server?" The video also shows you how to create link server in SQL server for Oracle. Complete list of SQL Server DBA Interview Questions by Tech Brothers http://sqlage.blogspot.com/search/label/SQL%20SERVER%20DBA%20INTERVIEW%20QUESTIONS
Views: 22526 TechBrothersIT
Automatic List partitioning
 
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Oracle 12c New Feature - Automatic List partitioning
Views: 160 Siva Academy
Oracle SQL Programming - Sequences, Indexes & Synonyms (Practical Demonstration)
 
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Sequences are used to serialized fields, although in Oracle 12G the IDENTITY feature can be used (similar to other database systems). Indexes help us organize physical data in a way to increase efficiency; 3 types of indexes are explained in this video (Bitmap, B-Tree and Table). Finally, this video discusses synonyms, which allow the aliasing of object names in Oracle.
Views: 49 Brian Green
Optimizing SQL Performance
 
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Held on July 12 2018 In July's session we mainly looked at performance. Highlights include: 1:30 How does the database process subqueries? 5:20 Performance: comparing insert ... select to create tmp table, insert select from tmp; DDL in PL/SQL; dynamic SQL problems 12:45 18c private temporary tables; tables specific to a session; DDL you can rollback across! 21:00 Improving update performance: things to watch for; insert vs. update; "join-update" - create a view instead; create table as select "update" 34:05 Analytic function performance: first_value non-determinism; min keep vs first_value; computing function in a subquery; indexes for analytic functions 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/ Oracle Developers portal: https://developer.oracle.com/ Sign up for an Oracle Cloud trial: https://cloud.oracle.com/en_US/tryit music: bensound.com
Views: 647 Oracle Developers
Parallel SQL
 
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Joel Bernstein from Alfresco broke his Lucene/Solr Revolution presentation into two parts. During the first half he talks about everything that SQL can do with Solr. The second half is an in-depth look at how SQL works. Later in the presentation he talks about Streaming Expressions which solves two problems that the streaming API has. Presented at Lucene/Solr Revolution. Learn more: https://activate-conf.com/
Views: 743 Lucidworks
CMU Advanced Database Systems - 19 Parallel Hash Join Algorithms (Spring 2018)
 
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Slides PDF: http://15721.courses.cs.cmu.edu/spring2018/slides/19-hashjoins.pdf Reading List: http://15721.courses.cs.cmu.edu/spring2018/schedule.html#apr-04-2018 Andy Pavlo (http://www.cs.cmu.edu/~pavlo/) 15-721 Advanced Database Systems (Spring 2018) Carnegie Mellon University
Views: 1104 CMU Database Group
1Z0-595 – Oracle Exam Spatial 11g Test Essentials Questions
 
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For more information on Oracle 1Z0-595 Practice Test Questions Please Visit: https://www.Pass-Guaranteed.com/1Z0-595.htm What am I going to be tested for? This 1Z0-595 certification exam covers topics such as: Describe test data validation and correction routines in 1Z0-595 Oracle Spatial, Use export and import utilities to move spatial data between exam databases, Move spatial data between 1Z0-595 databases by using transportable tablespaces, Create 1Z0-595 indexes, set index parameters, and create indexes in parallel, Describe index test metadata and find index size. Which are some of the topics of the 1Z0-595 Essentials exam? 1Z0-595 Test Topic 1: Loading and Validating Spatial Data Questions (Exam Coverage 18%) 1Z0-595 Test Topic 2: Indexing Spatial Data Questions (Exam Coverage 17%) 1Z0-595 Test Topic 3: Performing Spatial Queries Questions (Exam Coverage 20%) 1Z0-595 Test Topic 4: Performing Spatial Processing Questions (Exam Coverage 20%) 1Z0-595 Test Topic 5: Oracle Web Services Questions (Exam Coverage 15%) 1Z0-595 Test Topic 6: Workspace Manager Questions (Exam Coverage 10%) Who can attend to the Oracle Spatial 11g Essentials test? Candidates must have a basic understanding of: Describe the 1Z0-595 data types, data test models, coordinate systems, indexing structure, query exam model, and types of spatial queries, Describe the Oracle Spatial schema and how spatial data is represented in the 1Z0-595 database, Explain the differences between spatial operators and spatial test functions. Can you give me some in-depth information on the 1Z0-595 exam topics? • Explain spatial metadata test structures and views • Perform 1Z0-595 transactional inserts • Write Oracle queries finding correlations between two spatial layers • Write queries combining spatial and non-spatial exam criteria • Describe the functions for conversion from/to OGC exam formats • Generate GML documents from spatial test objects • Modify geometries using 1Z0-595 PL/SQL • Use the Java API to work with 1Z0-595 geometries What’s the 1Z0-595 passing score and duration? The duration of this exam is 120 minutes (76 questions) and the minimum passing score is 62%.
Views: 467 Orsan Stubell
Oracle SQL Tuning - Data Warehouse Star Transformations, Even with Standard Edition!
 
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Joining large tables in a Data Warehouse will often generate star transformations in the execution plan. So, what is a star transformation? And, what if you don't have Enterprise Edition - so you can't build Bitmap Indexes? In this free tutorial, Oracle Master John Watson will demonstrate star transformations in EE and how to make them work even without bitmap indexes - Standard Edition can save you thousands in licensing fees! This is Part 3 of a 5 Part series. View all video tutorials at SkillBuilders.com/EqualSQL.
Views: 4602 SkillBuilders
Real-World Performance - 1 - Cursors and Connection Intro
 
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Check out the entire series on the Oracle Learning Library at http://www.oracle.com/goto/oll/rwp In this video, listen and watch Andrew Holdsworth, Vice President of Oracle Database Real-World Performance at Oracle Corporation, as he explains and introduces a demonstration application, that simulates the mistakes of a poor database and application configuration, and the specific parts of the system that create a sub-optimal configuration. The goal is to step beyond Moore's Law, and create orders of magnitude changes. Copyright © 2014 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.
Hints and Tips - Queries running whilst exchanging partitions - part 2
 
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Even when you rip out a partition from a table, queries can still execute successfully. ========================================­­­­============== 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: 1044 Connor McDonald
What is partition and why use it? Creating a Partition, Partitioning method
 
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What is partition and why use it? Creating a Partition, Partitioning method - ETIT 427 - ADBA - IP University Syllabus For Students of B.Tech, B.E, MCA, BCA, B.Sc., M.Sc., Courses - As Per IP University Syllabus and Other Engineering Courses
Robert Haas talks about the importance of Parallel Query development in Postgres
 
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EnterpriseDB Vice President Robert Haas, who is also a Major Contributor to the PostgreSQL Community, talks about the importance of Parallel Query development in Postgres from Postgres Vision 2017. Visit www.EDBPostgres.com for information on EDB Postgres. To attend Postgres Vision 2018, visit www.PostgresVision.com for information.
Views: 259 EnterpriseDB
Oracle Tuning Tutorial - Long Full Table Scans Part 5 of 5
 
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See all 5 tutorials, free, at SkillBuilders.com/OracleTuningFullTableScans. In summary, serial full table scans were always indirect before 11.2, parallel scans always direct before 11.2. These are the two critical parameters. That hidden parameter _serial_direct_read, remember, defaults to auto so your application may start behaving very differently as you upgrade from 11.2.01 or 11.2.02. Parallel_degree_policy, that defaults to manual. But again, it becomes an option when you go to 11.2 to enable the automatic facility which allows not only automatic tuning to the degree of parallelism but also enables the ability to make indirect reads when doing a full table scan.
Views: 1624 SkillBuilders
Oracle Performance Tuning Training Video Tutorial information.
 
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http://www.dbvidya.com/blended-training/ [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: 417 DbVidya
Oracle Data Integrator ODI Loadplans with examples
 
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Oracle Data Integrator ODI Loadplans with examples, What is Load Plan in ODI and how to use load plan in odi. ODI Tutorial for Beginners. Oracle Data Integrator Tutorial ODI 11g Tutorial ODI 12c Tutorial
Views: 19641 TechLake

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