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Are my index statistics wrong?  Why does NUM_ROWS equal zero?
 
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blog: connor-mcdonald.com Highlights from the April DBA Office Hours session. Office Hours is 100% free Q&A sessions held every month by Oracle experts to help you succeed with the Oracle suite of technologies. Music: Smells Like Summer - Del (Vlog Music No Copyrighted) Video Link: https://youtu.be/IrkMsqcOjGU
Views: 271 Connor McDonald
How can I speed up a query if an index cannot help?
 
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blog: connor-mcdonald.com Highlights from the April DBA Office Hours session. Office Hours is 100% free Q&A sessions held every month by Oracle experts to help you succeed with the Oracle suite of technologies. Music: Smells Like Summer - Del (Vlog Music No Copyrighted) Video Link: https://youtu.be/IrkMsqcOjGU
Views: 1195 Connor McDonald
skip_unusable_indexes is NOT skipping unusable indexes!
 
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blog: connor-mcdonald.com Highlights from the April DBA Office Hours session. Office Hours is 100% free Q&A sessions held every month by Oracle experts to help you succeed with the Oracle suite of technologies. Music: Smells Like Summer - Del (Vlog Music No Copyrighted) Video Link: https://youtu.be/IrkMsqcOjGU
Views: 295 Connor McDonald
Optimizer Statistics
 
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Optimizer Statistics watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
ADS1: Hash tables for indexing
 
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We discuss how a hash table can hold a k-mer index, as well as how to query it. Course page: https://www.coursera.org/course/ads1.
Views: 4822 Ben Langmead
SQL indexing in 9 minutes and a half
 
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CAPTIONS AVAILABLE - Full transcript (with some screenshots) available for a small fee at http://stores.lulu.com/konagora/. Proper indexing is one of the keys to database performance - yet a disturbingly high number of people have it more or less wrong. This presentation is based on material from a seminar.
Views: 61168 roughsealtd
Slow SQL Query? Get the Plan in Oracle SQL Developer!
 
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See how to get execution and explain plans, format and views those plans, use AutoTrace, and Real Time SQL Monitoring for your SQL queries in Oracle SQL Developer.
Views: 2303 Jeff Smith
Oracle SQL Tutorial 19 - ON DELETE (SET NULL and CASCADE)
 
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Welcome everyone! Something you need to consider when you are creating foreign keys is what happens if you delete the parent? As a reminder, the parent is the row that has the value you are referencing in the row that has a foreign key. Why is this something important to consider? It's important because foreign keys need to protect us from two primary things, unacceptable INSERT statements, and unacceptable DELETE statements. Let's see what happens when we try to insert incorrect data into the table with the foreign key: INSERT INTO projects VALUES (1, 'Update website homepage', 'CalebCurry') The response tells us plainly that there is no such user in the users table. So this works correctly. Deleting data on the other hand works a bit differently because the database does not know what you want to do with the child row when you delete the parent from the parent table. By default, we will get an error message that prevents the parent from being deleted, but there are some other options. How do we configure this? This is where the ON DELETE statement comes in. We add the keywords ON DELETE right after the foreign key and then we can give it the option of CASCADE or SET NULL. CASCADE means that if we delete the parent, we are also going to delete the child. In our situation what that means is that if somebody creates a project in our project table and then that persons account gets deleted, all of the projects he owns will also be deleted. CASCADE: CREATE TABLE projects( project_id NUMBER, Project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL, CONSTRAINT projects_pk PRIMARY KEY (project_id), CONSTRAINT projects_users_fk FOREIGN KEY (creator) REFERENCES users (username) ON DELETE CASCADE ) SET NULL will take the value in the child table and get rid of it. What you are left with is NULL. This means that we have an orphaned child. The first thought you might have is that it is a bad thing to have an orphaned child, but in databases that is not always so. In our application if we had it set to SET NULL, when a user account gets deleted the projects would remain in existence they would just lack a creator. This might be a good thing if you are concerned about the long term survival of a project, this might be the route you want to go. It ultimately depends on the application purpose. If you don't like CASCADE or SET NULL, you can leave the entire ON DELETE statement and just have Oracle throw an error when a parent is deleted. As for us, we are going to use ON DELETE CASCADE. We need to use this with extreme caution. If you are not careful, someday you will run a delete a row and that will cascade through you database deleting a bunch of stuff you didn't want to delete. Stuff happens, so make sure you back up your database every once in eternity. Now, in the last video we started with a database design that had three tables. We've only created two in this video. In the next video we are going to create the next one, which is a little special. Then we'll finish things up by adding some indexes. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me on Patreon! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 15253 Caleb Curry
Oracle Database Indexes: Myths, Tips and Tricks
 
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In this tutorial, OCM John Watson will - via demonstrations - debunk these myths: Myth #1: Oracle Database does not index NULL Myth #2: A search that includes wildcards can't use an index if the wildcard precedes the string. Myth #3: Oracle will not use a function-based index unless the FBI is coded in the predicate. Myth #4: Indexes always help. The more indexes the better. See http://skillbuilders.com/free-oracle-tutorials for gigabytes of free Oracle video tutorials.
Views: 16191 SkillBuilders
Oracle SQL Tutorial 12 - Intro to Constraints
 
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As I believe I've mentioned in an earlier video, a constraint is basically a rule we can put in our database that prevents someone from putting the wrong data in. It protects our relationships and data integrity. Because the goal of these constraints are to protect our data integrity, you may hear them called integrity constraints. There are many integrity constraints we are going to talk about: NOT NULL UNIQUE PRIMARY KEY FOREIGN KRY CHECK There is also the DEFAULT attribute. These are all keywords we can add to our columns that will change the way the database works with our data and also prevents incorrect data. NOT NULL is a constraint you can put on a column that prevents nulls. A null is the absence of a value. When we say null, we are saying that every single row has to have a value for this column. UNIQUE is a constraint that makes every row have a unique value for this column. Now note, this does not require values to be put it, and it will allow multiple rows to be null. Next, we are going to talk about primary keys. What qualifies a column as a candidate key? First, not a single row should have a null for that column. Second, every row must be unique. The primary key constraint is essentially a combination of the NOT NULL constraint and the UNIQUE constraint. The foreign key constraint sets the requirement that any value in this column for any row must match a row in another column. Check constraints allow us to be more strict with what data is allowed in our database. NOT NULL and UNIQUE give some level of restriction, but what if we want something more specific? For example, what if we only want values between 0 and 100? That is where check constraints come in. When using check constraints, you give a boolean expression. A boolean expression is something that can be evaluated to true or false. It will only insert the row if the value you try to put into the row makes the expression evaluate to true. So if you put in a value too great or small, the expression will be false and the data is not allowed to be entered. The default constraint is a value you can give a column, and if for any reason when the row is created in the table a value is not provided, the default value will be given. So for example, we could have a bank account table where the balance defaults to 0. How do you actually implement these constraints when you are creating a table? In the next video we are going to be adding these to our users table. Please be sure to subscribe! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me on Patreon: http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 20048 Caleb Curry
What is REVERSE INDEX? What does REVERSE INDEX mean? REVERSE INDEX meaning & explanation
 
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What is REVERSE INDEX? What does REVERSE INDEX mean? REVERSE INDEX meaning - REVERSE INDEX definition - REVERSE INDEX explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Database management systems provide multiple types of indexes to improve performance and data integrity across diverse applications. Index types include b-trees, bitmaps, and r-trees. In database management systems, a reverse key index strategy reverses the key value before entering it in the index. E.g., the value 24538 becomes 83542 in the index. Reversing the key value is particularly useful for indexing data such as sequence numbers, where each new key value is greater than the prior value, i.e., values monotonically increase. Reverse key indexes have become particularly important in high volume transaction processing systems because they reduce contention for index blocks. Reversed key indexes use b-tree structures, but preprocess key values before inserting them. Simplifying, b-trees place similar values on a single index block, e.g., storing 24538 on the same block as 24539. This makes them efficient both for looking up a specific value and for finding values within a range. However if the application inserts values in sequence, each insert must have access to the newest block in the index in order to add the new value. If many users attempt to insert at the same time, they all must write to that block and have to get in line, slowing down the application. This is particularly a problem in clustered databases, which may require the block to be copied from one computer's memory to another's to allow the next user to perform their insert. Reversing the key spreads similar new values across the entire index instead of concentrating them in any one leaf block. This means that 24538 appears on the same block as 14538 while 24539 goes to a different block, eliminating this cause of contention. (Since 14538 would have been created long before 24538, their inserts don't interfere with each other.) Reverse indexes are just as efficient as unreversed indexes for finding specific values, although they aren't helpful for range queries. Range queries are uncommon for artificial values such as sequence numbers. When searching the index, the query processor simply reverses the search target before looking it up. Typically, applications delete data that is older on average before deleting newer data. Thus, data with lower sequence numbers generally go before those with higher values. As time passes, in standard b-trees, index blocks for lower values end up containing few values, with a commensurate increase in unused space, referred to as "rot". Rot not only wastes space, but slows query speeds, because a smaller fraction of a rotten index's blocks fit in memory at any one time. In a b-tree, if 14538 gets deleted, its index space remains empty. In a reverse index, if 14538 goes before 24538 arrives, 24538 can reuse 14538's space.
Views: 772 The Audiopedia
Quickly Navigating Between Objects in Oracle SQL Developer
 
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A couple of tricks for navigating from an Oracle Database table to its related objects such as indexes and triggers, and back. Plus how to jump to an object from your PL/SQL code.
Views: 1745 Jeff Smith
Leaner, Faster Code with Advanced SQL Techniques
 
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Connor Mcdonald, Developer Advocate for SQL, Oracle Most SQL is so simple to write that we can hand off the job to an ORM tool or a similar mechanism. But by delving a little deeper into more-advanced SQL facilities, we can get performance benefits and write a lot less middle-tier code. This session highlights some SQL techniques for solving problems that would otherwise require a lot of complex coding. Learn how to become a more productive developer by expanding your knowledge of the SQL language.
Views: 4680 Oracle Developers
Real Time SQL Monitorin Demo in Oracle SQL Developer
 
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See how to watch a query execute in real time using this Oracle Database Tuning Pack feature in Oracle SQL Developer.
Views: 23887 Jeff Smith
SQLcl & SQL Developer Tips & Tricks
 
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Presenter: Jeff Smith, Oracle Corporation Fewer keystrokes, fewer clicks = more code, more productivity, more fun. This session concentrates on the power features that most users bypass when using Oracle SQL Developer and our new command line interface, SQLcl. Do you use all of the shortcuts available to you? After this talk, you'll know how to get what you want, as quickly as you want. We're rebuilding this session from scratch. That's right, in 2017, this talk will be BRAND NEW. So if it's been awhile since you've seen it, come back and get caught up. As always, our goal is for each attendee to pick up one to three techniques that will drastically impact their productivity and save them time when working with Oracle Database.
Views: 553 ODTUG
Quickly Tuning SQL with SQL Developer
 
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In this video, I show a few shortcuts I used to make quick tuning work of a problematic SQL statement in SQL Developer 4.1
Views: 10115 BPeaslandDBA
How to Debug a Oracle Procedure | Package with PL/SQL Developer
 
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This Video will show you the simple and efficient way to Debugging your Procedure | Package with PL/SQL Developer..
Views: 8453 Oracle PL/SQL World
Data Streaming for Microservices using Debezium (Gunnar Morling)
 
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Debezium (noun | de·be·zi·um | /dɪ:ˈbɪ:ziːəm/) - Secret Sauce for Change Data Capture Streaming changes from your datastore enables you to solve multiple challenges: synchronizing data between microservices, maintaining different read models in a CQRS-style architecture, updating caches and full-text indexes, and feeding operational data to your analytics tools. Join this session to learn what change data capture (CDC) is about and how it can be implemented using Debezium, an open-source CDC solution based on Apache Kafka. Find out how Debezium captures all the changes from datastores such as MySQL, PostgreSQL and MongoDB, how to react to the change events in near real-time, and how Debezium is designed to not compromise on data correctness and completeness also if things go wrong. In a live demo we'll show how to set up a change data stream out of your application's database, without any code changes needed. You'll see how to sink the change events into other databases and how to push data changes to your clients using WebSockets. Voxxed Days Microservices 2018: 2 days conference (+1 optional workshops day) only on Microservices. Follow us on : Website : https://voxxeddays.com/microservices (bit.ly/vxdmicro) Twitter : https://twitter.com/vxdmicroservice Linkedin : https://www.linkedin.com/in/voxxed-days-microservices-906115164 Keep in touch : https://t.co/pxf7cHZOpl #developers #conference #microservices
Views: 717 Devoxx
Oracle Apex 5.1 Custom Design Report According to print layout
 
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Objectives - Oracle Apex 5.1 Report (Custom and Printable Design) Step-1 Create report page (interactive or classic) Step-2 Create report query Step-2 Create report layout using bi publisher desktop and upload Step-2 Create button to run report window.open ('url', 'windowName','Width=800, height=600'); All this features are available in www.apex.oracle.com BI publisher desktop Download location https://www.dropbox.com/s/t5upiwyty95p75a/%23bipublisher_11.1.1.3_desktop.zip?dl=0 --- http://www.oracle.com/technetwork/middleware/bi-publisher/downloads/index.html Thanks.....
Views: 9576 Mostafiz Mitul
Streaming Database Changes with Debezium by Gunnar Morling
 
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"Debezium (noun | de·be·zi·um | /dɪ:ˈbɪ:ziːəm/) - secret ingredient for change data capture" Updating caches and full-text indexes, synchronizing data between microservices, maintaining different read models in a CRQS-style architecture, feeding operational data to your analytics tools -- just a few use cases which benefit so much from streaming the changes from your datastore. In this session, you’ll learn what change data capture (CDC) is about and how it can be implemented using Debezium, an open-source CDC solution based on Apache Kafka. Find out how Debezium captures all the changes from datastores such as MySQL, PostgreSQL and MongoDB, how to react to the change events in near real time, and how Debezium is designed to not compromise on data correctness and completeness also if things go wrong. Gunnar Morling is a software engineer and open-source enthusiast by heart. He’s leading the Debezium project, a tool for change data capture (CDC). As part of the Hibernate team, he contributes to Hibernate Search, OGM and Validator. Gunnar is the spec lead for Bean Validation 2.0 (JSR 380). In his spare time he leads the MapStruct project. Prior to joining Red Hat, he worked on a wide range of Java EE projects in the logistics and retail industries. He’s based in Hamburg, Germany.
Views: 3456 Devoxx
Database Indexing
 
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Created, Produced and directed by Joe Gibson. Some things in this video are wrong. You can blame Orion for them.
Views: 1696 Orion Taylor
How connect Oracle SQL Developer to a local Oracle database
 
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This video shows how to set up a local Oracle database and connect to it with SQL developer. LINKS: Oracle 11g database: http://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html Oracle SQL Developer: http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html
Views: 4528 MineIsPolo
AskTOM TV - SQL trace, SQL plus, SQL developer
 
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A video to help you understand the "thought process" behind answering AskTom questions. In this episode, we look at how we can use SQL trace to diagnose what autotrace privileges we need in SQL Developer 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: 1094 Connor McDonald
Oracle SQL Developer Tips : How to format code
 
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To get the complete FREE course on Oracle SQL Developer click here: https://www.udemy.com/oracle-sql-developer-tips-and-tricks/ In this video I show you how you can use and customize the code formatter in Oracle SQL Developer to format your code as you like. This is an excerpt of the *FREE* course " Oracle SQL Developer : Tips And Tricks" ( https://www.udemy.com/oracle-sql-developer-tips-and-tricks/ ) Want to learn SQL? Here is a discounted course for you: http://bit.ly/oracle-sql-course You can find additional Oracle SQL related articles and educational content in my blog here: http://standout-dev.com/
Views: 3611 Oracle SQL
Should you use OOP programming in 2018?
 
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Learn web development fast: https://shop.killervideostore.com/ More and more developers are debating the use of OO programming, given some of the issues you can have with object oriented code. But many of today's top programming languages are object oriented: Python Java PHP C++ C# Swift JavaScript ... And many more. The main problem is NOT object oriented programming, it's how some people use it. Some links: https://docs.python.org/3/tutorial/classes.html https://docs.oracle.com/javase/tutorial/java/concepts/index.html http://php.net/manual/en/language.oop5.basic.php Learn Python 3 fast: http://www.killervideostore.com/python/ Become an entrepreneur: https://goo.gl/kpVUD2 My Instagram: https://www.instagram.com/stefanmischook/?hl=en Thanks! Stef
Views: 33294 Stefan Mischook
Android App Development Tutorial Part #2 | Telugu Tech Tuts
 
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android application development in telugu part-2 Java: http://www.oracle.com/technetwork/java/javase/downloads/index.html Android Studio: https://developer.android.com/studio/index.html hafiztime hafiz telugu videos #telugutechtuts #hafiztime -~-~~-~~~-~~-~- Please watch: "ఈ మొబైల్స్ కొనకండి | మీ డబ్బులు కాపాడుకోండి" https://www.youtube.com/watch?v=m6IBjIZFxcY -~-~~-~~~-~~-~-
Views: 25859 Telugu TechTuts
Oracle SQL Developer for the DBA
 
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An overview of Oracle SQL Developer's database administration features.
Index Function Tutorial
 
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Lean how to combine multiple Excel tools to create a powerful spreadsheet. In this video you'll learn how to use the Index function, the conditional formatting by using a formula and you will create 2 different Form controls and link them to some cells.
Views: 295 Officeinstructor
Debugging PL/SQL with Oracle SQL Developer
 
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Quick 2 minute video showing how to open a PL/SQL program in Oracle SQL Developer and debug it, line by line.
Views: 34122 Jeff Smith
SQL Developer: Install and configure SQL Developer on windows | How to install SQL Developer
 
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How to install Oracle SQL Developer in Windows 7 Oracle 11g Express & SQL Developer Install How to Download and Install Oracle SqlDeveloper Install and Configure Oracle SQL Developer on Windows Follow me: https://www.facebook.com/munir.du https://twitter.com/munir_du https://www.linkedin.com/in/md-munir-hussain Contact me: [email protected] How to configure SQL Developer on windows ----------------------------------------------------------------------- Oracle SQL Developer is a free integrated development environment that simplifies the development and management of Oracle Database in both traditional and Cloud deployments. SQL Developer offers complete end-to-end development of your PL/SQL applications, a worksheet for running queries and scripts, a DBA console for managing the database, a reports interface, a complete data modeling solution, and a migration platform for moving your 3rd party databases to Oracle. SQL Developer supports Oracle Database 10g, 11g, and 12c More details: http://www.oracle.com/technetwork/developer-tools/sql-developer/what-is-sqldev-093866.html Requirements for SQL Developer: a. Oracle database 10g or 11g or 12c b. JDK8 or above To download and synchronize SQL Developer 4.1.3 on windows using the following steps: At first, Install JDK8 Download required (32/64 as per your system) JDK8 from: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Extract sqldeveloper-4.1.3.20.78-no-jre Download SQL Developer from: http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html Now, copy this folder named sqldeveloper Then copy to Oracle home directory Open this folder Create shortcut for SQL Developer: Right click on sqldeveloper.exe Then send to desktop(create shortcut) To configure: Run SQL Developer by double clicking You need to a connection: Click on green plus (+)sign for connection Enter following information: Connection name: your connection name like HR Username: hr (your username) Password: hr (your password) Click on Save Password check box Hostname: localhost (my database is install in this machine only, so my host name is localhost.) Port: 1521 (default port number) SID: xe (global database name or your ORACLE_SID) Click on Test button for testing and debugging above information Click on Save than Connect button for connection, if your test status is success. That’s it. Thanks for linking, commenting, sharing and watching more of our videos.
Views: 18668 Leen's Tech
how to create database ,table  with primary key and auto increment in phpmyadmin
 
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This video explain how to create database and table and primary and auto increment in phpmyadmin
Views: 53057 expert programming
ROWNUM - so simple yet so much confusion!
 
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ROWNUM just assigns a counter to the rows in your query result. So why did so many people get our simple quiz on rownum wrong ? blog: https://connor-mcdonald.com twitter: https://twitter.com/connor_mc_d Subscribe as new tech videos come every week!
Views: 590 Connor McDonald
Oracle SQL Tutorial 23 - Intro to Data Types
 
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Every column within a table has to be given what is known as a datatype. A data type is a fairly simple concept when you dissect the word. It is literally the type of data. Why do we use types, though? The biggest benefit is so that Oracle knows how to interpret and work with our data. It also makes the database better at rejecting incorrect data. If we had to concept of a data type, there would be a lot more work involved in forcing data to be of the right format. It would also be harder for us to get the database to treat the data in the correct way. In addition to this, a database can optimize storage and performance for a column if everything is of the same data type. Because of this, each column can only support one data type. There are numerous different data types in Oracle and it helps us if we categorize them. The first types of datatypes we should learn about are: String, Numeric, Temporal Now, there are few more categories we could make, but these are the main ones. We will worry about the other ones another day as I am only introducing the topic. A string data type is anything within quotes. Most databases use single quotes for string data. Inside of the quotes can be any number of characters. What is a character? Think of any letter, number, or symbol you can type. Some people call these letters, numbers, and symbols alphanumeric. Numeric data type includes only numbers. These data types are often used for data that you plan on using for mathematical calculations. Temporal data types are data types that are used for dates and times. Now, each data type is probably going to have some options you'll need to worry about, but one that comes up with every data type is storage. The reason we need to consider storage is because we may end up with millions of rows in a table and the difference between a few bytes for each row will make a huge difference when we look at the whole picture. When a data type gives you the option of size, you will want to a size that will be able to hold what you need, but nothing more. In the upcoming videos we are going to discuss the available data types in more detail. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 7247 Caleb Curry
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: 424 Oracle Developers
Last DBA Office Hours before OpenWorld
 
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We're heading into OpenWorld season with this month's DBA Office Hours. We preview OpenWorld and how to get the best out of it, as well as covering - issues with the MERGE command - flashback database - unusual blocking locks - when EXPLAIN PLAN drops table from view blog: https://connor-mcdonald.com twitter: https://twitter.com/connor_mc_d https://developer.oracle.com/ https://cloud.oracle.com/en_US/tryit
Views: 129 Oracle Developers
Oracle 18C New Feature Treat AS JSON Document
 
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Oracle 18C New Feature, TREAT AS JSON document
Views: 307 Siva Academy
PABUG Webinar: Oracle SQL Developer Tips & Tricks
 
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Pennsylvania Banner User Group (PABUG) Webinar - tips and tricks for Oracle SQL Developer with Product Manager Jeff Smith and Temple Assistant Director Helen Sanders
Views: 1843 Jeff Smith
KISS series on Partitioning: 03 Multi column range partitioning
 
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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 range partitioning on multiple columns Scripts: https://livesql.oracle.com/apex/livesql/file/content_ERYV6B909XK196IAKLBUQIJSN.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: 890 Connor McDonald
Java is still free!
 
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Is Java free? Must you pay Oracle before using Java? We have heard news of how Java is now paid for. Some people are getting it all wrong. You can still use Java for free. In this video, I would explain the situation and help you understand what situations would require you to pay for Java. #LemubitAcademy #LemubitTalk I highly recommend you go through these articles: https://blog.joda.org/2018/08/java-is-still-available-at-zero-cost.html https://docs.google.com/document/d/1nFGazvrCvHMZJgFstlbzoHjpAVwv5DEdnaBr_5pKuHo/edit#heading=h.p3qt2oh5eczi https://dzone.com/articles/java-annotated-monthly-september-2018?fromrel=true Check out for OpenJDK: https://adoptopenjdk.net/index.html Track: Fareoh - Under Water [NCS Release] Music provided by NoCopyrightSounds. Watch: https://youtu.be/xzyRoshFFaA Free Download / Stream: http://ncs.io/UnderWaterYO
Views: 24 lemuel Ogbunude
Why is my Oracle Database Slow? The SQL Developer Performance Dashboard
 
11:00
Oracle SQL Developer's product manager, Jeff Smith, takes you through the Instance Viewer: a performance dashboard for your Oracle Database. See expensive queries, wait event break downs, and more!
Views: 1256 Jeff Smith
Using Blockchain, IOT and OTM for efficient cold chain management by Sambit Tripathy (Transplanning)
 
27:32
​Presentation by Sambit Tripathy during the OTM User Conference Europe in Amsterdam on 23 March 2018. This is about use of Private Blockchain, IOT and OTM to monitor cold-chain shipments for regulatory compliance and quality control. The term temperature controlled logistics or cold chain refers to a temperature-sensitive supply chain in which the products being shipped must be maintained within a specified temperature range and that temperature needs to be monitored. By using IOT enabled communication with Blockchain technology, the companies can improve their ability to monitor the temperature condition from shipment origin until its delivered. By integrating this data with OTM, companies can monitor the supply chain near real time and take corrective actions if anything goes wrong. With more than 20 years of domain and technology experience in Supply Chain, Logistics, Transport and Finance industries, Sambit possesses a unique range of skills and experience delivering best technology management and leadership to a wide variety of organizations. He is a highly regarded Technology/strategic Advisor, Coach / Mentor, is recognized for his expertise in Transportation and Warehouse Management, Supply Chain, use of Artificial Intelligence for Supply Chain and Logistics Optimization and BlockChain technologies. He is a hands on expert for Oracle Logistics (Transportation & Warehouse), Oracle Advanced Planning (VCP), Oracle Supply Chain Solutions. Other than that he developed and managed multiple solutions and prototypes using Artificial Intelligence, Machine Learning and Blockchain for logistics and supply chain industries. Based out of Dallas, TX, Currently he is working as founder and chief engineer of Transplanning. He holds an undergrad in engineering from Utkal University, India and MBA from University of California, Davis. Presentation slides: https://otmsig.communities.oaug.org/index.php/calendar/icalrepeat.detail/2018/03/21/24/-/2018-otm-user-conference-europe#agenda More info: http://www.otmsig.com
Views: 318 OTMSIGchannel
What is a hybrid histogram?
 
14:29
Highlights from the DBA Office Hours session. Subscribe for more highlight videos coming soon! blog: https://connor-mcdonald.com
Views: 374 Connor McDonald
Oracle SQL Developer : Tips and Tricks
 
02:11
Get the complete *FREE* course: https://www.udemy.com/oracle-sql-developer-tips-and-tricks/ Oracle SQL Developer is currently the most popular tool among database developers and SQL learners, however, since it makes it so easy to start firing commands and querying a database, many people don't feel the need to investigate its features, and end up using only what is obvious, visible, and enabled by default. If you are one of them, this course will help you get out of that group and start using SQL Developer more smartly. Want to learn SQL? Here is a discounted course for you: https://www.udemy.com/oracle-sql-from-scratch/?couponCode=YOUTUBE-FRIENDS-12 You can find additional Oracle SQL related articles and educational content in my blog here: http://standout-dev.com/
Views: 1686 Oracle SQL
C* Keys: Partitioning, Clustering, & CrossFit (Adam Hutson, DataScale) | Cassandra Summit 2016
 
34:05
Slides: https://www.slideshare.net/DataStax/c-keys-partitioning-clustering-crossfit-adam-hutson-datascale-cassandra-summit-2016 | Primary and Clustering Keys should be one of the very first things you learn about when modeling Cassandra data. Most people coming from a relational background automatically think, ""Yeah, I know what a Primary Key is"", and gloss right over it. Because of this, there always seems to be a lot of confusion around the topic of Primary Keys in Cassandra. This presentation will demystify that confusion. I will cover what the different types of Keys are, how they can be used, what their purpose is, and how they affect your queries. For this presentation, I will be using CrossFit gym locations as my subject matter. I will explain the differences between Primary Keys, Compound Keys, Clustering Keys, & Composite Keys. I will also show how the data behind each type differs as stored on disk. Lastly, I will show what queries each type of key will support. About the Speaker Adam Hutson Data Architect, DataScale Adam is Data Architect for DataScale, Inc. He is a seasoned data professional with experience designing & developing large-scale, high-volume database systems. Adam previously spent four years as Senior Data Engineer for Expedia building a distributed Hotel Search using Cassandra 1.1 in AWS. Having worked with Cassandra since version 0.8, he was early to recognize the value Cassandra adds to Enterprise data storage. Adam is also a DataStax Certified Cassandra Developer.
Views: 3723 DataStax
Oracle full table scans, direct path reads, object level checkpoints, ORA 8103s (old videos)
 
02:19:18
As the name says, in this hacking session I'll demo how full table scans (and full segment scans) work and related stuff too, like direct path read checkpoints and ORA-8103 errors.  It's an old video from 2011 so not with the best recording resolution, but should still be fun. As direct path reads go, some things have changed and should be clarified, perhaps the best explanation is here: https://blogs.oracle.com/smartscan-deep-dive/when-bloggers-get-it-wrong-part-1 https://blogs.oracle.com/smartscan-deep-dive/when-bloggers-get-it-wrong-part-2
Views: 489 Tanel Poder
Creating Reports in SQL Developer
 
04:05
Enroll into the free course here: https://dbagenesis.com/p/oracle-sql-developer-for-absolute-beginners/
Views: 122 DBA Genesis
Why a Master Patient Index is Necessary for Healthcare IT from CDW
 
01:08
More and more healthcare organizations are using electronic health records. One wrong entry of data can cause a lot of work on your end. CDW Solutions Architect Phil Salm explains why a Master Patient Index can help ease your worries and save you time and money. Learn how to get the most out of your Healthcare IT setup and visit www.cdw.com/healthcare Follow CDW on: Twitter http://twitter.com/CDWCorp Facebook http://www.facebook.com/CDWCorporation LinkedIn http://www.linkedin.com/company/CDW Spiceworks http://community.spiceworks.com/pages/CDW YouTube http://www.youtube.com/CDW
Views: 3842 CDWPeopleWhoGetIT
Install SQL : Installing & Setting Oracle 11G || Oracle 11G error solution || Anstron Tech
 
08:54
Install SQL : Installing & Setting Oracle 11G || Oracle 11G error solution || Anstron Tech Hey guys! Welcome to Anstron Tech. Here in this video, we will see that how to install SQl Oracle 11 G and set it for work. We will solve an error also which is "Windows cannot find 'http://127.0.0.1:%HTTPPORT%/apex/f?p=4950'. Make sure you typed the name correctly and then try again'". Link :- Oracle 11G :- http://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html JDK 9.0.1 64bit:- http://www.oracle.com/technetwork/java/javase/downloads/jdk9-downloads-3848520.html JDK 8u152 32bit:- http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Please subscribe to our channel and like the video if you found this video useful. If you found something wrong in this video then let us know in the comments so we can improve our upcoming video. *We have used a background sound by NCS Sounds in this video. Checkout there channel. NCS ? Twitch http://twitch.tv/nocopyrightsounds ? Spotify http://bit.ly/SpotifyNCS ? SoundCloud http://soundcloud.com/nocopyrightsounds ? Facebook http://facebook.com/NoCopyrightSounds ? Twitter http://twitter.com/NCSounds ? Google+ http://google.com/+nocopyrightsounds ? Instagram http://instagram.com/nocopyrightsounds_ Electro-Light ? Facebook https://www.facebook.com/ElectroLight... ? Twitter https://twitter.com/ElectroLightEDM ? SoundCloud https://soundcloud.com/maskedacoustic Distrion ? SoundCloud https://soundcloud.com/distrion ? Facebook https://www.facebook.com/distrionmusic ? Twitter https://twitter.com/Distrionoficial NCS Playlists: http://bit.ly/NCSdrumstep http://bit.ly/MelodicDubstepNCS http://bit.ly/NCShouse http://bit.ly/NCSdubstep http://bit.ly/NCSdrumandbass http://bit.ly/NCStrap http://bit.ly/NCShardstyle Original Audio Link:- https://www.youtube.com/watch?v=A2Ayd...
Views: 393 Anstron Tech
Buffer Busy Waits - Oracle
 
12:33
Oracle buffer Busy wait explained
Views: 32165 Ritesh Raj Singh

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