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Partitioning in Oracle Explained with Real project Examples : Introduction
 
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This Video series will explain partitioning and its use cases referencing real project examples from different domain. It will explain what when and why of partitioning in a simple but elaborate manner. This is the 1st video which explains why partitioning is required and what are the advantages we gain from it. The following videos will explain when should we do it and how.
Views: 32507 Tech Coach
What is a PARTITION in Oracle? Why to use Partition And Types of Partitions
 
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Hi guys in my today scenario I'm going to explain with you What is a PARTITION in Oracle? #WhatisPARTITION Why to use Partition And Types of Partitions Oracle database Unbeatable,Unbreakable Platform..
Views: 23889 Oracle World
Partitioning in Oracle - Performance Basics
 
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This is the 2nd video from " Partitioning in Oracle " series, It explains how oracle stores and manages data. What is single Block IO and Multi Block IO ? Why full table scan is better than index access in few cases. The video is very elaborate, I have tried my level best to keep it as simple as possible
Views: 13003 Tech Coach
Oracle Partitioning
 
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Oracle Partitioning watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
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: 3403 TechLake
Oracle Tutorial || Oracle|Adv Sql | Partitioned Table 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.......
Oracle Database 12c: Partitioning Improvements with Tom Kyte
 
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Tom Kyte introduces the new partitioning improvements in Oracle Database 12c, followed by a demo of global index maintenance. For more information: "Asynchronous Global Index Maintenance for Dropping and Truncating Partitions" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=VLDBG14107 "Changes for Very Large Databases and Partitioning in Oracle Database 12c Release 1" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=VLDBG14100 "ALTER INDEX COALESCE Clause" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=SQLRF52782 "DBMS_PART.CLEANUP_GIDX Procedure" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=ARPLS74409
Views: 14149 OracleDBVision
Oracle Optimization course, PL/SQL Tutorial - Table Partitions (Lesson 3)
 
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Oracle optimization: create table partitions and Index-Organized Table. Other lessons, visit https://www.youtube.com/watch?v=9RlxvHMg9PI&list=PL99-DcFspRUoscBHdh39T8EHENfm2VcQ3
Replication vs Partitioning - Georgia Tech - Advanced Operating Systems
 
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Watch on Udacity: https://www.udacity.com/course/viewer#!/c-ud189/l-628828562/m-614258766 Check out the full Advanced Operating Systems course for free at: https://www.udacity.com/course/ud189 Georgia Tech online Master's program: https://www.udacity.com/georgia-tech
Views: 8133 Udacity
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: 7746 Tech Coach
Oracle Partition By clause, Oracle Analytic Functions tutorial
 
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More about analytic functions, visit https://www.youtube.com/watch?v=Ukekis8C-SI&list=PL99-DcFspRUoscBHdh39T8EHENfm2VcQ3&index=2 Oracle Analytic Functions and Over By Partition clause enable calculating cumulative and moving aggregates returning multiple rows for each group.
MSSQL - What is Table Partitioning Explained
 
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Link to Scripts in Demo - https://goo.gl/JCQLUm Link to Adventure Works DB - http://msftdbprodsamples.codeplex.com/releases/view/55330 Brief explanation of what is Table Partitioning in SQL Server 2014 and a short Demo
Views: 15850 CodeCowboyOrg
List partitioning in Oracle : Part 3
 
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This video explains list partitioning in detail with 2 real project examples. I recommend watching these 2 videos on partitioning prior to watching the current one. 1. https://www.youtube.com/watch?v=m3q4lrE671Y&t=25s 2. https://www.youtube.com/watch?v=OQ8LXbxLI5g&t=1312s
Views: 7118 Tech Coach
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
What is Oracle Partitioning and why to use it
 
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Oracle Partitioning
Views: 58 amit wadbude
AskTom TV - Reference Partitioning
 
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blog: https://connor-mcdonald.com Options for how to populate the data in reference partitioned tables efficiently.
Views: 266 Connor McDonald
Local Vs Global Partitioned Index in Oracle 11g
 
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The Video Explains the difference between Local Partitioned Indexes(Prefixed vs Non Prefixed Indexes). and Global Partitioned Index along with the challenges in maintaining Global partitioned Indexes when the underlying tables partitioned is dropped/truncated/Merged/Moved. Local Partitioned Index Shares the same boundaries as the table and are in the same number as table partitions they are widely used in DSS and DWH systems. While Global Partitioned Index are predominantly used in OLTP systems
Views: 8853 Tech Coach
Range Partitioning in Oracle
 
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In this video I have explained what is range partitioning along with it's 2 real project use cases. I have also explained interval Partitioning as an extension of Range partitioning If you have not watched my Initial Videos on partitioning I will recommended watching them before watching this video Apologies for the 10 second video glitch between 6 and 7 minutes :(
Views: 6197 Tech Coach
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: 3722 SkillBuilders
Table Partitioning in Oracle Sql | Oracle Sql Partitioning | Oracle Sql Partitioning Step by Step
 
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Table Partitioning in Oracle Sql | Oracle Sql Partitioning | Oracle Sql Partitioning Step by Step --------------------------------------------------------------------------------------------------------- oracle, partition, partitioning, sql, partitioning in oracle, hash, list, range, interval partition, reference partition, composite partition, index partition, performance, partition pruning, partition wise join, sql server, partition table, sql server table partitioning, table partitioning, sql server partitioning, sql server table partition, table partition, what is partition, partitioned table, advantages of partition, types of partitions, ,table partitioning in sql server 2012 step by step,table partitioning in sql server 2014 step by step,table partitioning in sql server 2016 step by step,partition table sql server 2012 example,sql server partition existing table,sql server partition table by month,table partitioning in sql server 2008 r2 step by step,sql server partitioning best practices,horizontal partitioning in sql server, sql tutorials for beginners, sql expert, sql expert tutorials, database, oracle, table, online training,insert into oracle,oracle insert into multiple rows,create table oracle,oracle 12c alter table add identity column,oracle create table default value sysdate,collections in oracle pl sql with examples,Oracle 12c, database, oracle database (software), sql, sql developer, sql tutorials, how to create database using dbca, how to create database in oracle,oracle cloud, database 12c, dba genesis,database services, database, create, 11g, dba, db, beginner, Please Subscribe My Channel Composite Range-Range Partitioning Composite range-range partitioning enables logical range partitioning along two dimensions; for example, partition by order_date and range subpartition by shipping_date. Composite Range-Hash Partitioning Composite range-hash partitioning partitions data using the range method, and within each partition, subpartitions it using the hash method. Composite range-hash partitioning provides the improved manageability of range partitioning and the data placement, striping, and parallelism advantages of hash partitioning. Composite Range-List Partitioning Composite range-list partitioning partitions data using the range method, and within each partition, subpartitions it using the list method. Composite range-list partitioning provides the manageability of range partitioning and the explicit control of list partitioning for the subpartitions. Composite List-Range Partitioning Composite list-range partitioning enables logical range subpartitioning within a given list partitioning strategy; for example, list partition by country_id and range subpartition by order_date. Composite List-Hash Partitioning Composite list-hash partitioning enables hash subpartitioning of a list-partitioned object; for example, to enable partition-wise joins. Composite List-List Partitioning Composite list-list partitioning enables logical list partitioning along two dimensions; for example, list partition by country_id and list subpartition by sales_channel. Composite Hash-Hash Partitioning Composite hash-hash partitioning enables hash partitioning along two dimensions. This technique is beneficial to enable partition-wise joins along two dimensions. Composite Hash-List Partitioning Composite hash-list partitioning enables hash partitioning along two dimensions. Composite Hash-Range Partitioning Composite hash-range partitioning enables hash partitioning along two dimensions.
Partitioning Enhancements in oracle 12c
 
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Oracle has made 4 significant enhancements in 12c. 1.Mixing Interval and Reference partitioning 2.DDL operations on multiple partitions 3.Global Index maintenance 4.Cascade Operations from parent to child, Truncate and drop This video explains the enhancements in detail with practical examples
Views: 2255 Tech Coach
sub partitioning in oracle  or composite partitioning in Oracle RANGE-LIST, RANGE-HASH
 
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sub partitioning in oracle or composite partitioning in Oracle 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: 859 TechLake
Composite Partitioning in Oracle
 
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This video is the 6th Video in the series partitioning in oracle. It explains the different composite partitioning approaches and in what scenario they should be used with real project use case explanations.
Views: 3565 Tech Coach
Reference partitioning in Oracle 11g
 
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The video explains Reference partitioning and its advantages in Oracle with real project example. It builds on the limitations of reference partitioning in oracle 11g (Interval partitioning) and scenarios where you should implement reference partitioning
Views: 2474 Tech Coach
01 Overview of table Partition in oracle
 
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Partitioning enhances the performance, manageability, and availability of a wide variety of applications and helps reduce the total cost of ownership for storing large amounts of data. Partitioning allows tables, indexes, and index-organized tables to be subdivided into smaller pieces, enabling these database objects to be managed and accessed at a finer level of granularity. Oracle provides a rich variety of partitioning strategies and extensions to address every business requirement. Moreover, since it is entirely transparent, partitioning can be applied to almost any application without the need for potentially expensive and time consuming application changes. Partitioning allows a table, index, or index-organized table to be subdivided into smaller pieces, where each piece of such a database object is called a partition. Each partition has its own name, and may optionally have its own storage characteristics. From the perspective of a database administrator, a partitioned object has multiple pieces that can be managed either collectively or individually. This gives the administrator considerable flexibility in managing partitioned objects. However, from the perspective of the application, a partitioned table is identical to a non-partitioned table; no modifications are necessary when accessing a partitioned table using SQL queries and DML statements. Partitioning Key ======================== Each row in a partitioned table is unambiguously assigned to a single partition. The partitioning key is comprised of one or more columns that determine the partition where each row will be stored. Oracle automatically directs insert, update, and delete operations to the appropriate partition through the use of the partitioning key. When to Partition a Table ========================== Here are some suggestions for when to partition a table: Tables greater than 2 GB should always be considered as candidates for partitioning. Tables containing historical data, in which new data is added into the newest partition. A typical example is a historical table where only the current month's data is updatable and the other 11 months are read only. When the contents of a table need to be distributed across different types of storage devices. When to Partition an Index ============================= Here are some suggestions for when to consider partitioning an index: Avoid rebuilding the entire index when data is removed. Perform maintenance on parts of the data without invalidating the entire index. Reduce the impact of index skew caused by an index on a column with a monotonically increasing value. Partitioned Index-Organized Tables =================================== Partitioned index-organized tables are very useful for providing improved performance, manageability, and availability for index-organized tables. For partitioning an index-organized table: ============================================ Partition columns must be a subset of the primary key columns Secondary indexes can be partitioned (both locally and globally) OVERFLOW data segments are always equi-partitioned with the table partitions See Also: Oracle Database Concepts for more information about index-organized tables System Partitioning System partitioning enables application-controlled partitioning without having the database controlling the data placement. The database simply provides the ability to break down a table into partitions without knowing what the individual partitions are going to be used for. All aspects of partitioning have to be controlled by the application. For example, an insertion into a system partitioned table without the explicit specification of a partition will fail. System partitioning provides the well-known benefits of partitioning (scalability, availability, and manageability), but the partitioning and actual data placement are controlled by the application. See Also: Oracle Database Data Cartridge Developer's Guide for more information about system partitioning Partitioning for Information Lifecycle Management Information Lifecycle Management (ILM) is concerned with managing data during its lifetime. Partitioning plays a key role in ILM because it enables groups of data (that is, partitions) to be distributed across different types of storage devices and managed individually.
Views: 7498 Md Arshad
Oracle Partitioning
 
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http://www.oracle.com/database/real-application-testing.html ... Uses real workloads—Replays real workloads, not synthetic or artificial loads Comprehensive—100% coverage for entire change lifecycle ... Scalable—Requires similar effort for small and large changes ... Predictable—Transfers exact resolution of changes from testing to production ... Cost efficient—Reduces testing effort by up to 80%...
Views: 21194 Claudio Lichtenthal
Oracle Partitioning - Introduction
 
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Oracle Partitioning - Introduction
Views: 1357 The Silent DBA
Table Partitioning in Oracle Sql|Hash Partitioning|Range Partitioning|List Partitioning|Partitioning
 
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Table Partitioning in Oracle Sql | Hash Partitioning | Range Partitioning | List Partitioning | Partitioning --------------------------------------------------------------------------------------------------------- hash partitioning,range partitioning,oracle hash partitioned index example,partition by range interval,when to use range partitioning,what is table partitioning,list partitioning,how to query partition table in oracle,partition, sql server, sql, partitioning in oracle, hash, performance, oracle, partitioning, list, range, interval partition, reference partition, composite partition, index partition, partition pruning, table partitioning, sql server table partition, table partition, hash partitioning, composite partitioning, sql server partitioning, sql server table partitioning, partition table, types of partitions, what is partition, advantages of partition, partition index, sql tutorials for beginners, sql expert, sql expert tutorials, database, oracle, table, online training,insert into oracle,oracle insert into multiple rows,create table oracle,oracle 12c alter table add identity column,oracle create table default value sysdate,collections in oracle pl sql with examples,Oracle 12c, database, oracle database (software), sql, sql developer, sql tutorials, how to create database using dbca, how to create database in oracle,oracle cloud, database 12c, dba genesis,database services, database, create, 11g, dba, db, beginner, Please Subscribe My Channel
Oracle Tutorial || Oracle|Adv Sql | Partitioned Table Part - 2 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......
automated oracle table partitioning
 
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oracle table partitioning example
INDEX PARTITIONING oracle
 
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index partioning in oracle
Views: 437 oracle dba tutorial
What is the RANGE PARTITION in Oracle ?
 
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Hi guys in my today scenario I'm going to explain with you What is the RANGE PARTITION in Oracle, Oracle database #RANGEPARTITIONUnbeatable,Unbreakable Platform..
Views: 7395 Oracle World
List Partitioning in Oracle
 
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Understanding and creating list partition
Views: 64 Koenig Solutions
What is Database Sharding?
 
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Sharding a database is a common scalability strategy used when designing server side systems. The server side system architecture uses concepts like sharding to make systems more scalable, reliable and performant. Sharding is horizontal partitioning of data according to a shard key. This shard key determines which database the entry to be persisted is sent to. Some common strategies for this are reverse proxies. Database interviews ask for concepts like sharding to make databases more performant and available. This makes horizontal partitioning a logical choice. Horizontal vs. Vertical partitioning: https://stackoverflow.com/questions/18302773/what-are-horizontal-and-vertical-partitions-in-database-and-what-is-the-differen Consistent Hashing: https://en.wikipedia.org/wiki/Consistent_hashing https://www.youtube.com/watch?v=zaRkONvyGr8 Sources: https://medium.com/@jeeyoungk/how-sharding-works-b4dec46b3f6 https://medium.com/@jeeyoungk/why-i-love-databases-1d4cc433685f https://www.quora.com/What-is-the-difference-between-consistent-hashing-and-sharding-in-a-distributed-system https://en.wikipedia.org/wiki/Partition_(database) Preparing for your System Design Interview? "Grokking the System Design Interview" Course: https://www.educative.io/collection/5668639101419520/5649050225344512?affiliate_id=4793322061168640 Want to ace your algorithm interviews? AlgoExpert Course for Interviews: http://www.algoexpert.io/gaurav #database #sharding #interview #scalability
Views: 139691 Gaurav Sen
How to use partitioning to improve performance of large tables
 
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In this video we cover in much more detail the improvement in performance that can be achieved by using partitioning. MS SQL server databases can scale well using this feature. We cover how partitioning a table gives similar performance as a single table with a clustered index, we then explore how adding NC index improve performance of the heap table as well as the partitioned table.
Views: 20421 Jayanth Kurup
Oracle 12C New Feature - Multi Column List Partitioning
 
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Oracle 12C New Feature - Multi Column List Partitioning
Views: 234 Siva Academy
Overview row movement option with Partitioned table
 
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Overview row movement option with Partitioned table, Oracle Database 11g
Views: 11634 Mahir M. Quluzade
Oracle Tutorial || Oracle|Adv Sql | Partitioned Table Part - 4 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......
ORACLE PARTITIONING
 
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Oracle Parallelism: https://www.youtube.com/watch?v=3FnrgZds78k Inmon Yaklaşımı: https://www.youtube.com/watch?v=KrGMn1PnhAc&feature=youtu.be Kimball Yaklaşımı: https://www.youtube.com/playlist?list=PL-9jYSKvKuK9XEW5JpwvjXl69L1KbB2xE
Views: 94 begum has
Sharding in Oracle Database
 
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Held in March 2018 Oracle Sharding is a scalability and availability feature for custom-designed OLTP applications that enables distribution and replication of data across a pool of Oracle databases that do not share hardware or software. The pool of databases is presented to the application as a single logical database. Applications elastically scale (data, transactions and users) to any level, on any platform, simply by adding additional databases (shards) to the pool. Scaling up to 1000 shards is supported. 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: 607 Oracle Developers
Manual Partitioning of HardDisk in Oracle Linux 7 in VirtualBox 5.2 for Beginners
 
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In this Video we are going to demonstrate how to do Manual Partition or Customized partitioning of Hard disk in Oracle Linux 7.5 Virtual Machine in VirtualBox 5.2 during Installation. After Installation we will verify whether Processor Cores and disk size are configured properly. This video will be useful for beginners who likes to do Manual partitioning with customized size to each directory in file system. This custom partitioned Virtual Machine can be used as Development Environment for Java,PHP,Python and Database installations etc. Here we are using 160 GB Virtual Hard Drive and allocating 16 GB RAM and Six Core Intel Xeon E5 Processor to the Oracle Linux VM.
Views: 263 java frm
Automatic List partitioning
 
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Oracle 12c New Feature - Automatic List partitioning
Views: 220 Siva Academy
Hints and Tips - Queries running whilst exchanging partitions - part 1
 
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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: 959 Connor McDonald
Compression Options for Oracle Database
 
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Held on August 9 2018 This session by Gregg Christman focuses on general questions and insights regarding Oracle Basic Compression, Oracle OLTP Table Compression and Oracle Advanced Row Compression. Here is a quick guide to the highlights: 2:25 Basic vs. Advanced Row Compression comparison 4:55 Should you expect the same compression ratio with Basic and Advanced Row Compression? 8:29 Should you compress all tables and partitions? 15:50 What is the overhead associated with Advanced Row Compression? 17:06 Do I need to change my application to use compression? 17:31 Who uses Advanced Row Compression? 18:35 Is there any ongoing administration with Advanced Row Compression 20:43 When does updated data get compressed? 26:30 What role does PCTFREE play in updates and compression? 28:44 Does Advanced Row Compression work with Oracle Encryption? 29:34 Does enabling compression online or offline make a difference? 31:38 What are the typical compression ratios with Basic and Advanced Row Compression? 32:56 Are there any suggested MOS notes related to compression? 34:12 Feedback about ACO from customers 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: 684 Oracle Developers
System Design - Sharding | Data Partitioning
 
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Sharding or Data Partitioning: - Sharding is a technique to break up a big database into many smaller parts - Horizontal scaling means adding more machines, which is cheaper & more feasible - Vertical scaling means improving servers - Partitioning Methods: - Horizontal partitioning: - In this we put different rows into different table(db), i.e. rows can be based on location with zip codes, this is also range based sharding - Problem is if range is not choosen carefully, it'll lead to unbalanced servers. - Vertical Partitioning: - In this we divide data to store tables related to a specfic feature to their own servers.i.e. In Instagram, we can have 1 for user profile, 1 for photos, 1 for friend list. - Problem is in case of additional growth, its necessary to further partition a feature specific DB across servers. - Directory based Partitioning: - In this, create a lookup service which knows your current partitioning scheme & get it from DB access code. - To find out a data entry, we query directory server that holds the mapping between each tuple key to its DB server. - This is good to perform tasks like adding servers to the DB pool or change our partitioning scheme without impacting application. - Partitioning Criteria: - Hash-based partitioning: - In this we apply a hash function to some key attribute of the entity we're storing, that gives partition number. - Make sure to ensure uniform allocation of data among servers - Problem is it effectively fixes total number of DB servers, since adding a new server means changing the hash function, which would require redistribution of data & downtime, the workaround is Consistent Hashing. - List Partitioning: - In this each partition (DB server) is assigned a list of values, i.e. APAC, EMEA, US region has respective partition. - Round-robin Partitioning: - One by one assign which ensure uniform data distribution - Composite partitioning: - Combining any of above partitioning schemas to devise a new scheme. i.e First list partitioning with hash partitioning in each. - Common problems with Sharding: - Joins & Denormalisation: - Performing joins on a database which is running on one server is straightforward, but if DB is partitioned & spread across multiple machines, it's not feasible to perform joins that span database shards. - These joins won't be performance efficient. - Workaround is to denormalise the DB so that queries that required joins can be performed on single table. - Referential integrity: - Trying to enforce data integrity constraint suh as foreign keys in a sharded DB can be extremely difficult. Most of RDMS do not support this. - Rebalancing: - When data distribution is not uniform. - When there is lot of load on a particular Shard. In this video, we're going to reveal Sharding used in System Design: - What is Sharding/ Data Partitioning - Sharding Methods - Sharding Criteria - Sharding Challenges ★☆★ SUBSCRIBE TO ME ON YOUTUBE: ★☆★ https://www.youtube.com/codingsimplified?sub_confirmation=1 what is sharding in mongodb, database sharding example sharding vs partitioning, sharding mysql, sharding techniques, consistent hashing sharding, sharding crypto, what are sharding criteria CHECK OUT CODING SIMPLIFIED https://www.youtube.com/codingsimplified I started my YouTube channel, Coding Simplified, during Dec of 2015. Since then, I've published over 200+ videos. My account is Partner Verified and I get my earnings direct deposited into my account every month. ★☆★ VIEW THE BLOG POST: ★☆★ http://codingsimplified.com ★☆★ SEND EMAIL At: ★☆★ Email: [email protected]
Views: 2845 Coding Simplified
Hash Partitioning - DataStage
 
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In hash partitioning method, Input records are grouped based on certain fields and the groups are randomly distributed across the processing nodes (or partitions). The fields which are used to partition the data are called as hash key fields. The hash partitioner will make sure that every record belonging to a certain hash key field values are available in the same processing node (or partition). This method of partitioning is particularly useful when we use remove duplicate stage, sort stage, or aggregator stage in DataStage jobs. The hash partitioning requires at least one column to be define as has key (primary key field). Also, it can have multiple secondary key columns. In the diagram, the column City in the input dataset has been chosen as the hash partition key. As you can see, the records with City values “Chennai” and “Pune” are sent to first partition (processing node 1) and the records with City values “Mumbai” and “Kolkata” are sent to the second partition (or processing node 2). You may observe that, Node 1 has a smaller number of records compared to that of node 2. Hence, Node 2 processor will have to do a lot more processing work than that of node 1. This is the disadvantage of hash partitioning method: - It creates uneven sized partitions.
Views: 326 Datastage Tutorial
KISS series on Partitioning: 04 How to create a hash partitioned table
 
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Welcome to the KISS video series on Partitioning, where we take a more developer-centric look at how partitioning can make our applications more successful. In this session, we look at hash partitioning Scripts: https://livesql.oracle.com/apex/livesql/file/content_EVAZG9P72HTQ4Q695NT8MOTXG.html blog: https://connor-mcdonald.com ========================================­­============== Copyright © 2017 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: 728 Connor McDonald
AskTOM Office Hours - partitioning for database administrators
 
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blog: https://connor-mcdonald.com AskTOM Office Hours DBA free webinar
Views: 741 Connor McDonald
An Introduction to Partitioning
 
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re you a Database Administrator or Developer who has not previously implemented partitioning within an OLTP database? Have you thought about it, want to implement it, or even been asked to? We're going to go over the concepts and implementation of partitioning for you! We'll cover: • Introduction to partitioning, core concepts, and benefits. • Overview of partitioning functions and schemes. • Considerations for selecting a partitioning column. • Creating a partitioned table. • Explanation of aligned and non-aligned indexes. • Manually switching a partition. • Manually merging a partition. • Manually splitting a partition. • Demo on partition implementation & maintenance, covering automatic sliding windows. A SQL Server DBA, originally from Swansea, Wales but is currently living in Dublin, Ireland, Andrew has been working with relational databases (in one form or another) for over 10 years and has been a SQL Server DBA for 6 of those.
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