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Read Consistency -  Introduction - DBArch Video 24
 
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In this video you will understand how Oracle Database implements Concurrency and Consistency when Multiple users access the data. . 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: 4259 Ramkumar Swaminathan
Will huge Consistent Reads floods BUFFER CACHE?
 
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Video Blog on Oracle Real Time Activity regarding CACHE chains in BUFFER CACHE on Consistent Read operations. Looking for Oracle DBA training? WhatsApp/Contact: +919951696808 More training options at www.orskl.com/training
Views: 1999 OrSkl Academy
[ODI_3D] 2. What is Oracle LRU algorithm(Consistent Reads case)_KOR
 
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[ODI_3D] 2. What is Oracle LRU algorithm(Consistent Reads case)_KOR version
Views: 172 엑셈TV
[ODI_3D] 1. What is Oracle LRU algorithm(Single Block Read case)_KOR
 
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[ODI_3D] 1. What is Oracle LRU algorithm(Single Block Read case)_KOR DBMS 버퍼 관리의 두가지 흐름
Views: 187 엑셈TV
04 03 Contention and Latch Waits
 
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ORACLE
Views: 300 oracle ocm
Replication and Consistency in Cassandra (Chris Bradford, DataStax) | C* Summit 2016
 
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Slides: https://www.slideshare.net/DataStax/replication-and-consistency-in-cassandra-what-does-it-all-mean-christopher-bradford-datastax-c-summit-2016 | Many users set the replication strategy on their keyspaces to NetworkTopologyStrategy and move on with modeling their data or developing the next big application. But what does that replication strategy really mean? Let's explore replication and consistency in Cassandra. How are replicas chosen? Where does node topology (location in a cluster) come into play? What can I expect when nodes are down I'm querying with a Consistency Level of local quorum? If a rack goes down can I still respond to quorum queries? These questions may be simple to test, but have nuances that should be understood. This talk will dive into these topics in a visual and technical manner. Seasoned Cassandra veterans and new users alike stand to gain knowledge about these critical Cassandra components. About the Speaker Christopher Bradford Solutions Architect, DataStax High performance drives Christopher Bradford. He has worked across various industries including the federal government, higher education, social news syndication, low latency HD video delivery and usability research. Chris combines application engineering principles and systems administration experience to design and implement performant systems. He has architected applications and systems to create highly available, fault tolerant, distributed services in a myriad environments.
Views: 3354 DataStax
Ways of generating EXECUTION PLAN in Oracle Database
 
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Learn how to generate execution plan in oracle database in many ways
Views: 3436 OrSkl Academy
Understanding And Resolving Oracle CBC Wait/Latch Contention - Introduction
 
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Understanding And Resolving Oracle CBC Wait/Latch Contention When a server process needs to access a buffer it must access the cache buffer chain (CBC) structure to determine if the buffer is already in the buffer cache. With just the right workload mix, performance can be a problem. Learning about the relevant Oracle internals and how to diagnose and solve CBC performance problems is what this seminar is all about. For more information go to www.orapub.com
Views: 990 OraPub, Inc.
Interesting fact on reading data from GV$ views in RAC
 
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How data is fetched from GV$ views in oracle RAC
Views: 851 OrSkl Academy
Why are Kernel parameters critical for Oracle Database
 
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Learn more about Kernel parameters with a case study. It's awesome to see how SHMMAX parameter effects a process on UNIX. Liked it? Subscribe to our channel now !!! Look at the complete blog at www.orskl.com Need training on Oracle DBA? WhatsApp to +919951696808 Training content is at www.orskl.com
Views: 4830 OrSkl Academy
Is LBA mandatory for SCAN listener in Oracle RAC?
 
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Load Balancing Advisory is a feature that helps SCAN LISTENER to balance load across the instances in Oracle RAC 11gR2. This video will help you deep dive into concepts and facts on the same. Look at the blog of this video at: www.orskl.com In need of Oracle DBA training: www.orskl.com/training WhatsApp for traning at : +919951696808
Views: 4049 OrSkl Academy
Can a data block accommodate rows of distinct tables?
 
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With a case study let us find the answer if Oracle Database BLOCK can accommodate rows from multiple tables. Really very important when dealing with tuning an Oracle database at storage level. Need Oracle DBA training? Then visit www.orskl.com or whatsapp +919951696808 FInd more interesting blogs at www.orskl.com/blog
Views: 843 OrSkl Academy
1 technique to be safe and not sorry as Oracle DBA
 
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As an Oracle DBA, be safe with your data - scripts, docs, white papers and other references
Views: 2138 OrSkl Academy
Can you really flush Oracle SHARED POOL
 
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This video will explain what happens in reality when you issue ALTER SYSTEM FLUSH SHARED_POOL. A step by step case study will give you the answers by the end of this video session. Oracle DBA training: Need some training on Performance tuning? - Whatsapp +919951696808 Look for more contents on training at: www.orskl.com/training
Views: 2869 OrSkl Academy
3 values you should know when tuning the SQL statement
 
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Are you tuning an SQL statement, these 3 values might help you tune better
Views: 2776 OrSkl Academy
How Oracle database does instance recovery after failures
 
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A real time activity to demonstrate how Oracle database performs automatic instance recovery after a failure. This video blog will take a real example to prove the concepts in reality. Need DBA training? Whatsapp : +919951696808 More blogs at https://www.orskl.com
Views: 1911 OrSkl Academy
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.
Can you flashback table into SYSTEM tablespace?
 
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Flashback feature in Oracle database is well known to roll back the table to a specific timestamp (depends on undo retention) or to restore dropped table and many more. We must have used this flashback feature so far on application schema objects and found working without any issues. As an Oracle DBA did you configure any tools (might be monitoring, RMAN catalog or any) with objects created in SYSTEM tablespace? If so, you probably would see some problems later when you need to use Flashback on these objects though they are not Oracle supplied objects. Let us go through a case study which will clearly explain you the functionality of Flashback table. Did you like the video? Subscribe now, Like it and share it. Looking for Oracle DBA training or services? redirect to www.orskl.com WhatsApp to +919951696808
Views: 1575 OrSkl Academy
What exactly is PLAN TABLE in Oracle Database #Performance #Tuning
 
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Running an EXPLAIN PLAN to generate EXECUTION PLAN in oracle database is possible with PLAN_TABLE. But this video will give you much more insights of what is this PLAN_TABLE. Learn how is PLAN_TABLE called as global temporary table. Need Oracle database training? WhatsApp to +919951696808 visit www.orskl.com/training
Views: 3063 OrSkl Academy
Denormalization is normal with the Firebase Database - The Firebase Database For SQL Developers #6
 
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Check out our old but still good blog post: https://goo.gl/DoU2t4 Welcome to the sixth video in the Firebase Database for SQL Developers series! Coming from a SQL background you likely know plenty about normalization. But come prepared to learn all about denormalization! Denormalization is the process of duplicating data in order to reduce or simplify querying. While it may be strange coming from a SQL background, it's a common practice in NoSQL databases that will make reads more performant and your life much easier. Watch more videos from this series: https://goo.gl/ZDcO0a Subscribe to the Firebase Channel: https://goo.gl/9giPHG
Views: 36769 Firebase
Understanding And Resolving Oracle Free Buffer Wait Contention - Seminar Intro
 
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This is the introduction to my video seminar, Understanding And Resolving Oracle Free Buffer Wait Contention. Free buffer waits is one of the most feared of all Oracle wait events. It requires just the right workload mix and configuration to appear. When it does appear, it affects the entire application. As Oracle DBAs, our job is to regain control of the situation and restore application performance. But it is complicated and making the wrong move can make the situation even worse! So, how do you quickly improve performance with a clear understanding of the situation? That's the focus of this seminar. This seminar is designed to take you on a journey. The journey starts with Craig clearly explaining what a free buffer wait is. Then he delves into Oracle's buffer cache, focusing on the least recently used (LRU) lists and the associated algorithms. Craig even role plays as an Oracle foreground process and an Oracle buffer header, locking the details into your brain. Now the details brought together making the cause and effect clear so the presented solutions make perfect sense! Taking it further, two solutions are implemented and the results analyzed. Join Oracle ACE Director Craig Shallahamer as he take you on an unforgettable journey into the Oracle buffer cache zeroing in on understanding and resolving Oracle free buffer waits. For details go to http://www.orapub.com/video-seminar-understanding-eliminating-oracle-free-buffer-waits For more information about OraPub go to www.orapub.com
Views: 1229 OraPub, Inc.
New SQL ID Does not mean hard parsing or new execution plan
 
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Not that new SQL ID lets oracle database generate a new execution plan
Views: 1511 OrSkl Academy
Oracle DBA - Dataguard Realtime
 
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Understand Redo/Archive shipping at Network and process level in Dataguard. Find us @ facebook : https://www.facebook.com/orsklacademy For training on Oracle DBA please visit - www.orskl.com
Views: 17463 OrSkl Academy
Oracle Code Boston: Keynotes: Grand Ballroom A/B
 
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https://developer.oracle.com/code/boston-april-2018
Views: 442 Oracle Developers
SQLAlchemy: Connecting to a database
 
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Learn how to connect to your database: https://www.datacamp.com/courses/introduction-to-relational-databases-in-python In the python world, there are several great tools that we can use when working with databases. One of those is SQLAlchemy that we will be using throughout this course. SQLAlchemy will allow us to generate SQL queries by writing Python code. You should still consider learning how to write queries in SQL as well. SQLAlchemy has two main components. The part we will be focusing on is often referred to as "core" part of SQLAlchemy. It's really focused around the relational model of the database. Additionally, there is the Object Relational Model or ORM part of SQLAlchemy that is really focused around data models and classes that you as a programmer create. There are many different types of databases, and each database type has its own quirks and unique capabilities. You'll commonly find SQLite, PostgreSQL, MySQL, Microsoft SQL Server, and Oracle when working with data. SQLAlchemy provides a way to operate across all of these database types in a consistent manner. To connect to a database, we need a way to talk to it, and an engine provides that common interface. To create an engine, we import the create_engine function from sqlalchemy; we then use the create_engine function and supply it a connection string that provides the details needed to connect to a database. Finally once we have an engine, we are ready to make a connection using the connect method on the engine. It's worth noting that SQLAlchemy won't actually make the connection until we give it some work to execute. So to review, an engine is the common interface to the database, which requires a connection string to provide the details used to find and connect to the database. Before we go any further, let's talk a bit more about connection strings. In their simplest form, they tell us what kind of database we are talking to and how we should access it. In this example, you can see that we are using the sqlite database driver and the database file named census_nyc.sqlite which is in the current directory. Now that we have an engine and a connection, we need to know what tables are in the database. We'll start again by importing the create_engine function and creating an engine to our database. Finally, We can use the table_names method of the engine which returns a list of tables. Once we know what table we want to work on, we need a way to access that table with python. To do that we are going to use a handy process called reflection, which reads the database and builds a Table object that we can use in our code. We already have created our engine, so we begin by importing the MetaData and Table objects needed for reflection. The MetaData object is a catalog that stores database information such as tables so we don't have to keep looking them up. To reflect the table, we initialize a MetaData object. Next, we use the SQLAlchemy Table object and provide the table name we got earlier from the table_names method. We also supply our metadata instance, and then instruct it to autoload the table using the engine. Finally, we can use the function repr to view the details of our table that we stored as census. This allows us to see the names of the columns, such as 'state' and 'sex', along with their types, such as VARCHAR and INTEGER. This process of reflection may seem a bit of an overhead, but it will make understanding your databases and extracting information from them far easier downstream. Now it's your turn to practice writing connection strings, connecting to databases and reflecting tables. Then we'll be back here writing our first SQL queries.
Views: 34108 DataCamp
Why should we configure limits.conf for Oracle database
 
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Real time example - As Oracle DBA, you must have installed Oracle database software on UNIX platforms. But why did you configure limits.conf file ? This blog will help you understand with a real time example. Want Oracle DBA training? check www.orskl.com/training Whatsapp: +919951696808
Views: 1562 OrSkl Academy
ORACLE DBA Startup Stages
 
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The Startup 'nomount' Stage When you issue the startup command, the first thing the database will do is enter the nomount stage. During the nomount stage, Oracle first opens and reads the initialization parameter file 'init.ora' to see how the database is configured. For example, the sizes of all of the memory areas in Oracle are defined within the parameter file. After the parameter file is accessed, the memory areas associated with the database instance are allocated. Also, during the nomount stage, the Oracle background processes are started. Together, we call these processes and the associated allocated memory the Oracle instance. Once the instance has started successfully, the database is considered to be in the nomount stage. If you issue the startup command, then Oracle will automatically move onto the next stage of the startup, the mount stage. Starting the Oracle Instance 'Nomount Stage' There are some types of Oracle recovery operations that require the database to be in nomount stage. When this is the case, you need to issue a special startup command: startup nomount, as seen in this example: startup nomount The Mount Stage When the startup command enters the mount stage, it opens and reads the control file. The control file is a binary file that tracks important database information, such as the location of the database datafiles. In the mount stage, Oracle determines the location of the datafiles, but does not yet open them. Once the datafile locations have been identified, the database is ready to be opened. Mounting the Database Some forms of recovery require that the database be opened in mount stage. To put the database in mount stage, use the startup mount command as seen here: startup mount If you have already started the database instance with the startup nomount command, you might change it from the nomount to mount startup stage using the alter database command: alter database mount; The Open Oracle startup Stage The last startup step for an Oracle database is the open stage. When Oracle opens the database, it accesses all of the datafiles associated with the database. Once it has accessed the database datafiles, Oracle makes sure that all of the database datafiles are consistent. Opening the Oracle Database To open the database, you can just use the startup command as seen in this example startup If the database is mounted, you can open it with the alter database open command as seen in this example: alter database open;
Views: 551 Oracle DBA Training
Database Architecture & Scaling Strategies, in the Cloud & on the Rack
 
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In this webinar, Robbie Mihayli, VP of Engineering at Clustrix explores how to set up a SQL RDBMS architecture that scales out and is both elastic and consistent, while simultaneously delivering fault tolerance and ACID compliance. He also covers how data gets distributed in this architecture, how the query processor works, how rebalancing happens and other architectural elements. Examples cited include cloud deployments and e-commerce use-cases. In this webinar, you will learn: 1. Five RDBMS scaling strategies along with their trade offs 2. The importance of having no single point of failure for OLTP (fault tolerance) 3. The vagaries of the cloud and how it impacts using an RDBMS in the cloud Who should watch? 1. People interested in high performance, real-time database solutions 2. Companies who have MySQL in their infrastructure and are concerned that their growth will soon overwhelm MySQL’s single-box design 3. DBA’s who implement ‘read slaves’, ‘multiple-masters’ and ‘sharding’ for MySQL databases and want to learn about better ways to scale
Views: 1269 Clustrix
Optimizer Adaptive Features in Oracle 12C
 
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Die Optimizer Adaptive Features wurden mit Oracle 12.1 neu eingeführt und umfassen u.a. adaptive Pläne, SQL Plan Direktiven und sowie diverse „Re-Optimization“ Techniken. Ausgehend von den bisher gemachten Erfahrungen wurden in Version 12.2 diverse Anpassungen bzw. Verbesserungen gemacht. Diese Änderungen stehen im Mittelpunkt des Vortrages.
Views: 210 DBMasters
Pisces December'18| Divine Love awakening|Monthly Love Intuitive Tarot Reading
 
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You have more control over the outcomes you await. Open your heart to the love that is coming your way.Enormous potentials are gathering around you! Connecting with your higher self welcomes your soulmate💛❤💛 A life full of surprises and a few tips for cleansing that amazing energy of yours! Sing along! December 2018. Great changes are on their way, arriving shortly, but, are you making the space to receive them? Abundance Awaits You, It's Time You Believe It Too! The Beautiful Silver Lining! *For Personal Reading, [email protected] *If you like my videos and would like to support this channel, the link for Paypal:- https://www.paypal.me/gypsianmoon Beautiful Messages and Reaffirmations for whats to come in the Month of December 2018. An intuitive reading, by Gypsianmoon, for whats ahead in the near future. As we channel in the energies, the Universal energies step in to deliver beautiful messages of strength, career, love, power, awareness, happiness, financial growth and abundance. This a Monthly Love Tarot & Intuitive Reading, where Gypsian moon reads the spreads intuitively which are reaffirmed with the tarot meaning. This is a purely general reading, hence, they resonate on your behalf or from the other's- twinflames, soulmates, lovers, love interest- side of the story. Hope this does help in some way of lighting an aspect which the Guardian wish for you to know, do take what Resonates & let go of that which doesn't. This is a reading set for December, but as our lives are different and so are our timelines. For some it may all manifest in October, while for some the process will start from hereon, and for some its a reading for November and beyond! Everyday we live, everyday we create, just like adding a new page to our biography. These weekly readings are here to guide you through, to give a preview into what's to come and what's in the future. YOU ARE HERE BECAUSE THERE'S A MESSAGE THE UNIVERSE WANTS YOU TO HEAR, The Choice Is Yours :) Decks used: The Sacred India Tarot The Romance Angels Oracle Cards The Mystical Wisdom Card Deck Energy Oracle Deck Keepers of The Light Oracle cards Your world is expanding! Guided Meditation to Attract & Remain in Abundance|Powerful Affirmations 11:11 https://youtu.be/4F6H4kkKyeI NEW, Pisces, Scorpio & Cancer| Love December'18|Pick a card|Stepping Up|Monthly Intuitive Tarot Reading https://youtu.be/spnZ58wtt6Y PISCES November Mid Month LOVE|Mirroring Growth, deepening Love & Ascension| Intuitive Tarot Reading https://youtu.be/1SVSosUkR0o Pisces November|They too are mirroring you|Trust|Monthly Love & General Intuitive Tarot Reading 2018 https://youtu.be/DVU510QmS_g PISCES MID MONTH, 2nd Half Oct'18|Door to Romance opens up|Love Bi-weekly Intuitive Tarot Reading https://youtu.be/WKLA-KX4woo PISCES first half of October|Trust yourself first, love|Biweekly General Intuitive Tarot Reading https://youtu.be/RWVTkKS7PYM NEW: Pisces October Monthly Love Reading:- https://youtu.be/blMjYWirDVw FULL MOON in Aries for PISCES, 24th Sept into October https://youtu.be/0Wkj_jMIyMs 2nd Half of September, Mid monthly reading for PISCES:- https://youtu.be/91hM6qIF4Qg PISCES September Monthly LOVE Intuitive Tarot Reading:- https://youtu.be/vEY1oEuK7sM SUBSCRIBE! Like, Comment & Share! THANKS For WATCHING!! INSTAGRAM: http://www.instagram.com/gypsianmoon FACEBOOK: http://www.facebook.com/gypsianmoon #pisces #intuitivereading #december
Views: 311 Gypsian Moon
Violin Memory: a clean-sheet flash architecture
 
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Violin Memory's flash arrays deliver exceptionally consistent - and low - latency in TPC-C benchmarks. This StorageMojo video white paper explores the clean-sheet architecture that uses erase and write hiding so reads are never delayed and hardware-based vRAID for high performance.
Views: 5213 StorageMojo
What is CQRS+Event Sourcing and Why Should Java Developers Care?
 
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Abstract: CQRS (Command Query Responsibility Segregation) is a design pattern that originates in DDD (Domain-Driven Design) and emphasizes strictly separating reads from updates in the application model. Event Sourcing is a closely related technique that stores state as a series of events as opposed to only keeping track of the latest data. While these concepts are important on their own right, they are especially important for microservices development. In this heavily demo driven session we explore CQRS and Event Sourcing in detail using the Axon Java framework. At the end of the session you should have a good idea if CQRS and Event Sourcing are for you and why Axon helps in implementing these concepts. Bio: Reza Rahman is Senior Vice President at AxonIQ. He has been an official Java technologist at Oracle. He is the author of the popular book EJB 3 in Action. Reza has long been a frequent speaker at Java User Groups and conferences worldwide including JavaOne and Devoxx. He has been the lead for the Java EE track at JavaOne as well as a JavaOne Rock Star Speaker award recipient. Reza is an avid contributor to industry journals like JavaLobby/DZone and TheServerSide. He has been a member of the Java EE, EJB and JMS expert groups over the years. Reza implemented the EJB container for the Resin open source Java EE application server. He helps lead the Philadelphia Java User Group.
Read Uncommitted DBMS Isolation Level - (Explained By Example)
 
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In this video, we explain the first method of database isolation to tackle the read problems encountered as a result of transaction concurrency. Read uncommitted, despite offering no isolation at all, is considered one of an isolation levels databases implement. We illustrate this isolating level using instagram as example. - [x] Database ACID - Atomicity https://goo.gl/ER9PPj - [x] Database ACID - Consistency https://goo.gl/VpLAeN - [x] Database ACID - Dirty read https://goo.gl/88wf6y - [x] Database ACID - Phantom read https://goo.gl/rnyzuA - [x] Database ACID - Non repeatable read https://goo.gl/8kgEjN - [x] Database ACID - Read uncommitted https://goo.gl/4igWUq - [x] Database ACID - Read committed https://goo.gl/twgAKL - [x] Database ACID - Repeatable read https://goo.gl/vDcP6M
Views: 138 IGeometry
►Pack Giveaway #2 [25 Card Packs]◄
 
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►Email: [email protected] ►I’m a sexy description! Please read me◄ ►We apologise for not being consistent lately. But we try our best to improve! ►Subscribe: https://www.youtube.com/channel/UCVEuP-9Ho-0NDRCiwwuuArQ?sub_confirmation=1 ► Show it your friends & share ►If you have any request, please let us know in the comment section! ♥ THANKS FOR WATCHING! ♥ PS: Here is a Code for a free pack for the first who reads the description♥ You can enter the code here: https://eu.battle.net/account/management/claim-code.html The Code: MW6H-MH94-TFFFF-46CJ-LBDS PPS: We got asked many times: Here are our Battle.net details: Hones#21346 -- For Europe (EU) Jarrison#21439 -- For America (NA)
Views: 421 Jarrison Hones
Database 12c:  Pre-upgrade 11g Information Tool
 
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Oracle Database 12c: Pre-upgrade 11g Information Tool
Views: 87 Ora Tube
A Dramatic(ish) Reading of Stones To Abbigale - Chapter 1
 
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A Dramatic(ish) Reading of Stones To Abbigale by Onision. This time it's a proper dramatic reading where I keep a consistent voice and everything!
Views: 13 Broke Adventurer
Iceberg: a fast table format for S3
 
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Netflix’s Big Data Platform team manages data warehouse in Amazon S3 with over 60 petabytes of data and writes hundreds of terabytes of data every day. With a data warehouse at this scale, it is a constant challenge to keep improving performance. This talk will focus on Iceberg, a new table metadata format that is designed for managing huge tables backed by S3 storage. Iceberg decreases job planning time from minutes to under a second, while also isolating reads from writes to guarantee jobs always use consistent table snapshots. In this session, you'll learn: • Some background about big data at Netflix • Why Iceberg is needed and the drawbacks of the current tables used by Spark and Hive • How Iceberg maintains table metadata to make queries fast and reliable • The benefits of Iceberg's design and how it is changing the way Netflix manages its data warehouse • How you can get started using Iceberg
Views: 677 DataWorks Summit
Tarot Reading - Cancer Dec 31-Jan 7
 
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*I use the "Rider Tarot" deck & "Work Your Light " oracle cards by Rebecca Campbell *Readings will not apply to all, please view other videos that may resonate with your rising, venus, mars, or moon sign
Views: 30 Kristina Reads
Couchbase: Simple, Fast, Elastic NoSQL Database
 
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Couchbase is a privately held company funded by Accel Partners, Ignition Partners, Mayfield Fund and North Bridge Venture Partners. It's the simple, fast, elastic NoSQL database technology for interactive web applications. Couchbase is the NoSQL database market share leader, with production deployments at AOL, Deutsche Post, NTT Docomo, Salesforce.com, Turner Broadcasting Systems, Zynga and hundreds of other organizations worldwide. Couchbase products enable a more flexible, scalable, high-performance, and cost-effective approach to data management than relational database solutions and are particularly well suited for web applications deployed on virtualized or cloud infrastructures, and mobile applications requiring real-time data synchronization between devices and the cloud. "NoSQL really started a few years ago when people started having increased problems with relational databases and technologies like MySQL and the proprietary technologies from the big guys," explains Bob Wiederhold, CEO of Couchbase. "A lot of application developers were starting to look for something different. They wanted something that provided them a much more flexible data model, something with much higher performance and something that would scale a lot more easily to deal with the huge amount of data." Couchbase Server makes it easy to optimally match resources to the changing needs of an application by automatically distributing data and I/O across commodity servers or virtual machines. It scales out and supports live cluster topology changes while continuing to service data operations. Its managed object caching technology delivers consistent, sub-millisecond random reads, while sustaining high-throughput writes. As a document-oriented database, Couchbase Server accommodates changing data management requirements without the burden of schema management. Getting started with Couchbase Server is easy. Linux, Windows and OSX packages can be installed and configured in minutes. Couchbase Website: http://www.couchbase.com/ Couchbase on Twitter: https://twitter.com/couchbase Couchbase on Facebook: https://www.facebook.com/pages/Couchbase/159035930813922 Couchbase on CrunchBase: http://www.crunchbase.com/company/couchbase
Views: 10314 Rackspace Studios, SFO
12-03-isolation-levels.mp4
 
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Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/Blw9/ Help us caption & translate this video! http://amara.org/v/Blw9/
Views: 5605 Stanford Dbclass
Oracle Tuning Mistakes and Solutions
 
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Oracle 12c Multi-Threaded Database (parameter threaded_execution=true) provides an fantastic performance improvement by reducing the number of background processes. In this free tutorial, Oracle Certified Master John Watson of SkillBuilders demonstrates how to enable this feature and the resulting performance benefit - in John's demo, a doubling of performance! See all free Oracle 12c tutorials at http://www.skillbuilders.com/free-oracle-tutorials.
Views: 3726 SkillBuilders
What is DENORMALIZATION? What does DENORMALIZATION mean? DENORMALIZATION meaning & explanation
 
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What is DENORMALIZATION? What does DENORMALIZATION mean? DENORMALIZATION meaning - DENORMALIZATION pronunciation - DENORMALIZATION definition - DENORMALIZATION explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In computing, denormalization is the process of trying to improve the read performance of a database, at the expense of losing some write performance, by adding redundant copies of data or by grouping data. It is often motivated by performance or scalability in relational database software needing to carry out very large numbers of read operations. A normalized design will often store different but related pieces of information in separate logical tables (called relations). If these relations are stored physically as separate disk files, completing a database query that draws information from several relations (a join operation) can be slow. If many relations are joined, it may be prohibitively slow. There are two strategies for dealing with this. The preferred method is to keep the logical design normalized, but allow the database management system (DBMS) to store additional redundant information on disk to optimise query response. In this case it is the DBMS software's responsibility to ensure that any redundant copies are kept consistent. This method is often implemented in SQL as indexed views (Microsoft SQL Server) or materialised views (Oracle, PostgreSQL). A view represents information in a format convenient for querying, and the index ensures that queries against the view are optimised. The more common approach is to denormalize the logical data design. With care this can achieve a similar improvement in query response, but at a cost—it is now the database designer's responsibility to ensure that the denormalized database does not become inconsistent. This is done by creating rules in the database called constraints, that specify how the redundant copies of information must be kept synchronised. It is the increase in logical complexity of the database design and the added complexity of the additional constraints that make this approach hazardous. Moreover, constraints introduce a trade-off, speeding up reads (SELECT in SQL) while slowing down writes (INSERT, UPDATE, and DELETE). This means a denormalized database under heavy write load may actually offer worse performance than its functionally equivalent normalized counterpart. A denormalized data model is not the same as a data model that has not been normalized, and denormalization should only take place after a satisfactory level of normalization has taken place and that any required constraints and/or rules have been created to deal with the inherent anomalies in the design. For example, all the relations are in third normal form and any relations with join and multi-valued dependencies are handled appropriately.
Views: 7690 The Audiopedia
What is Hadoop?: SQL Comparison
 
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This video points out three things that make Hadoop different from SQL. While a great many differences exist, this hopefully provides a little more context to bring mere mortals up to speed. There are some details about Hadoop that I purposely left out to simplify this video. http://www.intricity.com To Talk with a Specialist go to: http://www.intricity.com/intricity101/
Views: 368703 Intricity101
16  exp oem
 
01:07:26
Please go to https://4techbees.wordpress.com/ to get docs on oracle training and to view my blog posts.
Views: 214 mohan k
IX MOSCOW BEACH RUGBY TOURNAMENT WETT CUP 2015
 
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IX MOSCOW BEACH RUGBY TOURNAMENT WETT CUP 2015
Views: 131 7MasterX
Aries ~ Mid Month March TuneUp ~ Change is still coming, let your worries fall aside and enjoy!
 
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kellylunt.com/workwithme/ for a private session! After the 16th price goes up to $597 as a monthly package and includes daily support
Views: 2309 Kelly Lunt
Medium Reading on Brin Safe
 
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We have had several talented Mediums that have 'read' the Brin safe located at Terrell Paranormal and featured on the Terrell Ghost Walk. It is one of the largest haunted items we have ever worked with and there are consistent and proven facts that Mediums and our research has uncovered. Is this the reason why the Brin Building is so haunted? We aren't sure but feel pretty positive that the safe has something to do with it. Please come and take a look for yourself. Bring your digital cameras and see if you can have an experience yourself. TerrellGhostWalk.Com or TerrellParanormal.Com #terrellghosts
Views: 128 Terrell Ghosts
Sagittarius *Redefining Success* December 2018 Tarot Read
 
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*99* Happy Birthday, Sag! Thank you for sharing your energy with me! January 2019 looks like a lot of consistent, productive work! [email protected] *Private Readings are Delivered in 3-5 business days 3 Questions = $22 : -Ask 1-3 Questions & Receive a *WRITTEN E-MAIL RESPONSE with PICTURES OF SPREAD(S)* https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=TTV76UJFAGD2U 30min Read = $44 https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=9Z9W65VH55UG8 60min Read = $77 https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=BEQEZ6B6JCTDE 90min Read = $99 https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=CYAG4M37FF5ZW ~*Rushed Private Readings*~ -Delivered in 24-48 Hours 30mins, Rushed = $55 https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=ERXXU68C8X5BU 60mins, Rushed = $99 https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=7898V5KASGNDQ 90mins, Rushed = $131 https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=MJ3WQ5Y768EGW *Feel free to send questions &/or astro info to [email protected] when placing order!* Tarot Decks: Deviant Moon Tarot by Patrick Valenza; Radiant Rider-Wait; Dreams of Gaia Tarot by Ravynne Phelan; SpirtSong Tarot by Paulina Cassidy [[--Legal Disclaimer: These readings are for entertainment purposes only. The future can & does change & shift, as a result of free will. Lunarticks Tarot can accept no liability or responsibility for any action a client chooses to take. --]] Thank you for seeking your tarot fix here! Music: https://www.youtube.com/playlist?list=PLAFjIfL96JiOAsAL3Mmr62-atG7ox1fi6 All Donations are so very Appreciated; Thank You! : https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=F697W2GYQ5W2E
Views: 83 LunarTicks Tarot

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