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Parallelism in SQL
 
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Parallelism in SQL watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
SQL Server Performance Tuning  Controlling Parallelism
 
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Parallelism seems like it should be one of those things that the query engine takes care of for us, but it does require some care and tending from time to time. The default server configurations are no longer adequate for controlling parallelism, and DBAs need to know how to tweak the settings to make it run optimally. When parallelism goes awry, it can cause severe performance problems. Sometimes only for a specific query, sometimes it can hurt performance server-wide. To add a little complexity to the mix, parallelism can also be controlled by query hints and Resource Governor. Understanding how these three options for setting the Max Degree of Parallelism interact and who wins when they conflict is critical in being able to understand how to control it. Robert is a SQL Server Certified Master, MVP, and experienced DBA, evangelist, speaker, writer, and trainer. He has worked with SQL Server for 15+ years. He recently worked for Outerwall, Idera Software, and Microsoft. He served as PM for the SQL Server Certified Master Program at Microsoft Learning, and as a production DBA at Microsoft. He currently works as a principal database architect at DB Best Technologies. Robert is co-founder and co-leader of the PASS Security Virtual Chapter.
Views: 2972 DBAFundamentals
SQL Server DBA Tutorial 142-How to Configure Maximum Number of Concurrent Connections in SQL Server
 
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In this video you will learn how to configure Maximum number of concurrent connections in SQL Server using SQL Server Management studio as well as using T-SQL Script. Video also explains step by step process of going through advance options of SQL Server, what is default number of concurrent connection SQL Server allows and pre-requisites of concurrent connection settings to take effect in SQL Server. Blog post link for the video with scripts http://sqlage.blogspot.com/2015/03/how-to-configure-maximum-number-of.html Visit our website to check out SQL Server DBA Tutorial Step by Step http://www.techbrothersit.com/2014/12/sql-server-dba-tutorial.html
Views: 4429 TechBrothersIT
Oracle DB Vs MySQL for Enterprise DataBase Deployments
 
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Oracle DB is big, and expensive, but it brings a lot to the "table" when compared with MySQL. MySQL has limited ability to audit. MySQL's security is unsophisticated. There are no groups or roles, no ability to deny a privilege (you can only grant privileges). A user who logs in with the same username and password from different network addresses may be treated as a completely separate user. There is no built-in encryption comparable to Oracle. MySQL's Authentication is built-in. There is no LDAP, Active Directory, or other external authentication capability. MySQL has no MPP (massively parallel processing ) support. Unlike Oracle MySQL has no fractional-second storage type for times, dates, or intervals. There is no RAC (Real Application Cluster) support in My SQL, and no failover or server promotion either. These are strong features in Oracle MySQL's number of joins per query is limited to 61. Oracle's limit is much larger. MySQL Replication is asynchronous and has many limitations and edge cases. For example, it is single-threaded, so a powerful slave can find it hard to replicate fast enough to keep up with a less powerful master.
Views: 20314 Biz of Tech
Oracle External Tables
 
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Oracle External Tables
Views: 248 The Silent DBA
BITMAP  and  BITMAP JOIN INDEX IN ORACLE explained
 
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The video explains BITMAP and BITMAP JOIN INDEX IN ORACLE and when you should create them on a column. BITMAP INDEXES should be dealt with carefully as they can lead to serious performance issues if the table is updated by multiple processes in parallel. Indexing Basics :https://www.youtube.com/watch?v=0X9bbtwTnuE&t=1095s Star and snowflake Schema :https://www.youtube.com/watch?v=Qq4yhhAk9fc&t=17s
Views: 2996 Tech Coach
Sql Server Degree of Parallelism and Parallel Query Plans
 
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Hey DBA guys! Ever wondered what goes behind when SQL Server chooses a parallel query plan or otherwise? Here's a slideshow explaining that! Happy reading! Got some feedback? Mail me at [email protected] ! Enjoy!
Views: 703 SQL Server DBA
What is DEGREE OF PARALLELISM? What does DEGREE OF PARALLELISM mean? DEGREE OF PARALLELISM meaning
 
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What is DEGREE OF PARALLELISM? What does DEGREE OF PARALLELISM mean? DEGREE OF PARALLELISM meaning - DEGREE OF PARALLELISM definition - DEGREE OF PARALLELISM 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 The degree of parallelism (DOP) is a metric which indicates how many operations can be or are being simultaneously executed by a computer. It is especially useful for describing the performance of parallel programs and multi-processor systems. A program running on a parallel computer may utilize different numbers of processors at different times. For each time period, the number of processors used to execute a program is defined as the degree of parallelism. The plot of the DOP as a function of time for a given program is called the parallelism profile.
Views: 357 The Audiopedia
Real-World Performance - 3 - Connection Pools and Hard Parse
 
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Check out the entire series on the Oracle Learning Library at http://www.oracle.com/goto/oll/rwp In this video, listen and watch Andrew Holdsworth, Vice President of Oracle Database Real-World Performance at Oracle Corporation, as he demonstrates how connections and hard parsing contribute to transaction throughput and simulates the mistakes of a poor configuration creating sub-optimal performance. Copyright © 2014 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.
Oracle Performance Tuning - Loading Data - 03 Using manual parallelism and changing initrans
 
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Connect with me or follow me at https://www.linkedin.com/in/durga0gadiraju https://www.facebook.com/itversity https://github.com/dgadiraju https://www.youtube.com/c/TechnologyMentor https://twitter.com/itversity
Views: 814 itversity
Oracle Soulmate - Rappelz Epic 9.5 - Serv. Mephisto with music
 
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All about Parallelism
 
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Kiran Kumar Vallapinni
Views: 210 TeradataPARTNERS
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: 1604 TechLake
introduction to sql - Single-Row Functions
 
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Course Description – sql1 COURSE DESCRIPTION: The Oracle server extends the data modeling capabilities to support an object relational database model that brings object-oriented programming, complex data types, complex business objects, and full compatibility with the relational world. It includes several features for improved performance and functionality of online transactionprocessing (OLTP) applications, such as better sharing of run-time data structures, larger buffer caches, and deferrable constraints. Data warehouse applications will benefit from enhancements such as parallel execution of insert, update, and delete operations; partitioning; and parallel-aware query optimization. COURSE OBJECTIVES: in this course List the capabilities of SQL SELECT statements Execute a basic SELECT statement Differentiate between SQL statements and iSQL*Plus commands Limit the rows retrieved by a query Sort the rows retrieved by a query WHO SHOULD ATTEND?   COURSE OUTLINE: In this lesson, you should have learned howtheOracleserverusesconstraints to prevent invalid data entry into tables. You also learned how to implement the constraints in DDL statements.   Writing Basic SQL SELECT Statements Restricting and Sorting Data Single-Row Functions Displaying Data from Multiple Tables Aggregating Data Using Group Functions Subqueries Producing Readable Output with iSQL*Plus Manipulating Data Creating and Managing Tables Including Constraints
Oracle RAC DBA Online Training
 
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Oracle RAC DBA Online Training Cheyat Training provides the best online training on Oracle RAC DBA Online Training with experienced trainers who work for multiple projects in MNC’s, Cheyat tops the list of training institutes which provide quality online training on Oracle RAC DBA. Your investment of time and effort in learning the concepts and in gaining hands-on experience will give you maximum benefit at Cheyat. We provide Server access for 3 months. So that our students have additional advantage of knowing the in-and-out of all of the aspects of Oracle RAC DBA. Course Content : http://cheyat.com/oracle/oracle-rac-dba-online-training-tutorials.html For more info Contact us : [email protected] Thanks & Regards, Jilani Shaik +91-91009-98433/34(India) +1-224-676-9882(USA)
Views: 928 Cheyat Technologies
Creative Oracle Redo Maneuvers - Seminar Intro
 
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Creative Oracle Redo Maneuvers teaches you how to push Oracle redo throughput to the absolute limit! There are a number of unusual and powerful maneuvers Oracle DBAs can do to reduce commit times, reduce log file sync and log file parallel write wait times. In a nutshell, improve performance when the system is bogged down with redo related issues. This seminar goes deep. Memory architecture and redo processing is explored through creative experimentation, statistical analysis and operating system tracing Oracle processes. It's a fascinating journey that every Oracle DBAs should take. Join Oracle ACE Director Craig Shallahamer as he explores how Oracle's redo processing actually works and how you can use this knowledge to maximize Oracle performance and increase your value as an Oracle DBA. What you are watching in the seminar Introduction. For details go to http://www.orapub.com/video-seminar-creative-redo-maneuvers What You Will Learn - How Oracle redo processing and flow works - The key memory structures and how to fit together - What is the log file sync wait event and why it is feared - How multiple Oracle 12c LGWRs work together - How to creatively use Oracle's "commit write" facility - Creatively using Oracle's ability to change OS process priorities Modules 1. Memory and process redo related architectures 2. Things Change... Always 3. Drilling Into Oracle 12c Multiple LGWRs 4. Breaking The Rules With The "Commit Write" Facility 5. Understanding When Commit Write Shines 6. Changing LGWR OS Priority. Yes! For more information on OraPub, go to www.orapub.com
Views: 503 OraPub, Inc.
SQL Case When Queries SQL Server / Oracle / Sybase
 
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SQL Server Management Studio - Case when statements, great for altering cells from a data warehouse when you do not have the actual ability to physically update the cells. Get SQL Server 2008R2 Express with All Reporting and BI Tools Free from Microsoft - The only thing different in Express is a 4Gig Ram limit on processing and no Database Engine Tuning Advisor! http://www.microsoft.com/download/en/details.aspx?id=25174
PGA Tuning and Sort Area
 
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PGA Tuning and Sort Area watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjab, Tutorials Point India Private Limited
SQL Tutorial 12 Advanced Subqueries returning multiple columns
 
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SQL Tutorial on Advanced Subqueries returning multiple columns Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko : https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1
Views: 53040 Telusko
How and When to Use SQL Server FILESTREAM Datatypes Part 1
 
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Learn more about LogicalRead: http://bit.ly/logicalread5 In part 1 of this two-part series, you'll learn about how and when to use the SQL Server FILESTREAM datatype so that you can more easily store and manage unstructured data–or BLOBs. Connect with SolarWinds: thwack Community: http://thwack.solarwinds.com/ Facebook: https://www.facebook.com/SolarWinds Twitter: https://twitter.com/solarwinds Google+: https://plus.google.com/+solarwinds/ LinkedIn: http://www.linkedin.com/company/solarwinds Instagram: http://instagram.com/solarwindsinc/ Vine: https://vine.co/SolarWinds Flickr: http://www.flickr.com/photos/solarwinds_inc/
Views: 7694 solarwindsinc
Oracle Database 12c Architecture Overview
 
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This video provides an overview of the Oracle Database 12c Architecture. Copyright © 2013 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.
Parallel Executions of Tasks in SSIS - SQL Server Integration Services (SSIS) Tutorial
 
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In this SQL Server Integration Services(SSIS) Interview question video, you will learn the answer of question "What is parallel execution in SSIS, and how many Data Flow Tasks can apackage run in parallel?" I totally forgo to mention if Hypder-threading is enable then it will be number of logical processors +2 , those many executable can run in parallel. Complete list of SSIS Interview Questions by Tech Brothers http://sqlage.blogspot.com/search/label/SSIS%20INTERVIEW%20QUESTIONS
Views: 11993 TechBrothersIT
Connect to Oracle database with SQL Developer for MAC OSX.
 
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This video contains a total demonstration of how to connect to oracle 12c release 1 on Oracle linux server 6.4 64 bit from MAC OSX Mountain Lion 7.0 using SQL Developer 4.0.3.16.84. Tutorial contains 2 way of connecting 1. Connecting using oracle service name. 2. Connecting using saved xml configuration file. SQL Developer for MAC OSx link : http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html
Views: 58145 Subhroneel Ganguly
SQL Server 2016 - MAXDOP por banco de dados | Paralelismo por banco de dados
 
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Nesse video vamos apresentar uma das novas features do SQL SERVER 2016: o MAXDOP por banco de dados! Até o SQL Server 2014 a configuração "Max Degree of Parallelism" (MAXDoP) era uma configuração que influenciava o comportamento de paralelismo de todos os bancos de uma instância; agora, o DBA poderá configurar o grau máximo de paralelismo por banco de dados usando o novo comando: ALTER DATABASE SCOPED CONFIGURATION SET MAXDOP = [X] ; (Onde "X" é o número máximo de CPUs que você deseja utilizar em requisições paralelas) Assista o video com uma demo prática e direta. Deixe sua dúvida ou sugestão nos comentários :) Referências adicionais: https://blogs.msdn.microsoft.com/saponsqlserver/2015/04/29/max-degree-of-parallelism-maxdop/ "Therefore the general recommendation for SQL Server Instances running SAP application workloads is to set the max degree of parallelism option to 1(...)" http://scn.sap.com/docs/DOC-1006 Abraçoooo do Sr. SQuiLo!
Views: 654 Esquilo Sequelado
Oracle Sql Group By Clause
 
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This is video for oracle sql group by clause, you can learn easily with this video.. You can get knowledge about group by, having clause with real time examples.
Views: 4303 manmeet singh
PL/SQL tutorial 74: PL/SQL Bulk Collect Clause with FETCH-INTO statement of an explicit cursor
 
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RebellionRider.com presents a PL/SQL tutorial on how to use PL/SQL Bulk Collect with Fetch-Into statement of an explicit cursor in Oracle Database. Watch and learn how to enhance query performance with Bulk Collect in Oracle Database by Manish Sharma. ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/bulk-collect-3 Previous Tutorial ► Introduction to Bulk Collect: https://youtu.be/HPVzFBluM_Q ► Explicit Cursor: https://youtu.be/3q7dW_d2KVc ► Simple Loop: https://youtu.be/AFx6QYcY1CU ► The script on GIT: https://github.com/RebellionRider/pl-sql-tut-74.git ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ For E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 8072 Manish Sharma
SQL Best Practices in less than 20 minutes 2/3
 
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CAPTIONS AVAILABLE - View on www.konagora.com where Youtube is blocked. Full transcript (with some screenshots) available for a small fee at http://stores.lulu.com/konagora/. Video transcription of a presentation that was given before several groups of IT managers in a big international bank.
Views: 64665 roughsealtd
Harness the Power and Performance of GlassFish: Tuning for High Availability
 
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Oracle GlassFish Server, the reference implementation of the Java EE specification, is highly regarded for being a fast, lightweight application server. Tune it improperly, however, and performance gains quickly evaporate. Attend this session to understand, step-by-step, how to tune your GlassFish environment for maximum performance and availability. Learn how to address key performance challenges such as load (number of concurrent sessions), scalability (both vertical and horizontal, including centralized cluster provisioning and management), and safety margins to ensure high availability. The session also presents detailed best practices for server, JVM, and operating system tuning as well as critical monitoring and testing strategies. Copyright © 2013 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.
Creating a large table with random data for performance testing   Part 61
 
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In this video we will discuss about inserting large amount of random data into sql server tables for performance testing. In our next video, we will be using these tables, for performance testing of queries that uses subqueries and joins. Text version of the video http://csharp-video-tutorials.blogspot.com/2013/01/creating-large-table-with-random-data.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-61-creating-large-table-with.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 74314 kudvenkat
Heinz Kabutz on the Impending Parallel Streams Bottleneck
 
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JCrete organiser Heinz Kabutz talks all things Java, the things that even Oracle presenters don't fully understand, and why popularity might be a bad thing for parallel streams.
Views: 493 Voxxed
Rappelz 9.2 duo circus templar and oracle
 
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Rappelz 9.2 server undine
Views: 1262 Caio Pedro
NMap 101: Timing Options Part 1, Haktip 100
 
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Shannon Morse covers several options you can use in NMap to change the timing of your port scans. There are occasions where slowing down or speeding up your scan can help you receive better detailed outputs from NMap. For example, if you're on a slow connection, you may want to slow down your scan to give you more accurate results. There are several options you can add to your command to make this happen, so lets go through some of the important ones. First off I should probably mention how NMap looks at times. It automatically puts time into a millisecond format, so for example, if you type 100, that would be 100 milliseconds. Pretty fast! If you type 100s, that would be 100 seconds. 1m would be 1 minute. 1h would be one hour. 1000 milliseconds is the same as 1 second, so if my command included 1000, I could also type 1s instead. There are also timing templates you can add to your NMap command. If I typed my command out as: nmap -T0 10.73.31.45, this would force nmap to go very slowly. I can add a parameter up to -T5 (0-5) to make it go extremely fast. NMap will send out a scan with several parallel port scans at one time. You can control this, with the --max-parallelism or --min-parallelism option. If I type: nmap --max-parallelism 4 10.73.31.45, the maximum number of ports that nmap will scan at any given time will be 4. Alternatively, using --min-parallelism 100 will tell NMap it can scan no less than 100 ports at the same time which may result in less accuracy. Let's move on to host group sizes. These commands will tell NMap how many hosts to scan at the same time on a network. So if I typed: nmap --min-hostgroup 10 10.73.31.1/24, it would scan a minimum of 10 hosts at the same time, which can speed up a scan. You can also use --max-hostgroup 10 10.73.31.1/24 to set the maximum number of hosts to scan. Here's another fun one: use this command to change the RTT Timeout value (which is the default round-trip time in milliseconds before NMap has a timeout). Use the command: nmap --initial-rtt-timeout 6000 10.73.31.45. Remember 6000 would be 6 seconds. You can also set the --max-rtt-timeout 350 10.73.31.45. The default in NMap is an RTT timeout at 10 seconds, which you can set lower to make a faster scan, or higher to keep NMap from giving up on a scan. Lastly is the maximum retries NMap will try before it gives up. Use the command: nmap --max-retries 3 10.73.31.45. And that's it for today! We know plenty of timing options now! Next week we will cover the rest of the timing options. Send me a comment below or email us at [email protected] And be sure to check out our sister show, Hak5 for more great stuff just like this. I'll be there, reminding you to trust your technolust. -~-~~-~~~-~~-~- Please watch: "Bash Bunny Primer - Hak5 2225" https://www.youtube.com/watch?v=8j6hrjSrJaM -~-~~-~~~-~~-~-
Views: 8908 Hak5
How to enable partitioning in Informatica Data quality 10.0
 
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Agenda of this video includes: Introduction to partitioning What is maximum parallelism and where it is set. What is suggested parallelism and where it is set. What is the trade off of setting improper partitioning options
Views: 2230 Informatica Support
[Rappelz épic 8.2] Void Mage ~ Max damage & others
 
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Voici la vidéo qui conclue l'épic 8.2 pour moi, un max max damage (il me manque juste les buff oracle) Enjoy~
Views: 3035 Pandorra
Oracle Fusion Cloud Creation of Facility Schedule Inventory Workday Calendar
 
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For Oracle Fusion Cloud procurement and SCM training's contact. M R U Technologies Sarath Kumar +91-7893918485
Views: 209 MRU Technologies
introduction to sql - Manipulating Data
 
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Course Description – sql1 COURSE DESCRIPTION: The Oracle server extends the data modeling capabilities to support an object relational database model that brings object-oriented programming, complex data types, complex business objects, and full compatibility with the relational world. It includes several features for improved performance and functionality of online transactionprocessing (OLTP) applications, such as better sharing of run-time data structures, larger buffer caches, and deferrable constraints. Data warehouse applications will benefit from enhancements such as parallel execution of insert, update, and delete operations; partitioning; and parallel-aware query optimization. COURSE OBJECTIVES: in this course List the capabilities of SQL SELECT statements Execute a basic SELECT statement Differentiate between SQL statements and iSQL*Plus commands Limit the rows retrieved by a query Sort the rows retrieved by a query WHO SHOULD ATTEND?   COURSE OUTLINE: In this lesson, you should have learned howtheOracleserverusesconstraints to prevent invalid data entry into tables. You also learned how to implement the constraints in DDL statements.   Writing Basic SQL SELECT Statements Restricting and Sorting Data Single-Row Functions Displaying Data from Multiple Tables Aggregating Data Using Group Functions Subqueries Producing Readable Output with iSQL*Plus Manipulating Data Creating and Managing Tables Including Constraints
String Functions in SQL Server part-I || ASCII, CHAR,CHARINDEX,CONCAT Function in SQL Server
 
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This video will provide you the details of each string functions in SQL Server 2014. I'll be walking through each and every kinds of build in function which are available in SQL Server in my next videos. ******************************************************************************************** ASCII (Transact-SQL) Returns the ASCII code value of the leftmost character of a character expression.  Syntax -- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse ASCII ( character_expression )  Arguments character_expression Is an expression of the type char or varchar.  Return Types int ******************************************************************************************** CHAR (Transact-SQL) Converts an int ASCII code to a character.  Syntax -- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse CHAR ( integer_expression )  Arguments integer_expression Is an integer from 0 through 255. NULL is returned if the integer expression is not in this range.  Return Types char(1) ******************************************************************************************** CHARINDEX (Transact-SQL) Searches an expression for another expression and returns its starting position if found.  Syntax -- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse CHARINDEX ( expressionToFind , expressionToSearch [ , start_location ] )  Arguments expressionToFind Is a character expression that contains the sequence to be found. expressionToFind is limited to 8000 characters. expressionToSearch Is a character expression to be searched. start_location Is an integer or bigint expression at which the search starts. If start_location is not specified, is a negative number, or is 0, the search starts at the beginning of expressionToSearch.  Return Types bigint if expressionToSearch is of the varchar(max), nvarchar(max), or varbinary(max) data types; otherwise, int. ******************************************************************************************** CONCAT (Transact-SQL) Returns a string that is the result of concatenating two or more string values.  Syntax -- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse CONCAT ( string_value1, string_value2 [, string_valueN ] )  Arguments string_value A string value to concatenate to the other values.  Return Types String, the length and type of which depend on the input.
Views: 156 Softtech forum
Fast Parallel Data Loading with the Bulk API - Doug Merrett live from the UK
 
51:05
Can you load 20 million records into Salesforce in under an hour? If not, this webinar is for you. You want to load tons of data into Salesforce. No problem, right? Just use the Bulk API and turn on parallel loading. Think again. Unless you carefully plan the big data loads that you want to break up into parallel operations to achieve maximum throughput, those loads can turn out more like slow, serial loads. In this webinar, Doug will teach you how to realize awesome throughput in your parallel data loads on the Salesforce1 Platform. After learning from the webinar's demos and code samples, you'll be able to apply your new deep knowledge of platform internals to measure load performance, recognize problems that slow your loads down, and work around these roadblocks.
Views: 1424 Salesforce Developers
Oracle Pl/sql Cursors (Implicit, Explicit, Open-Fetch-Close, FOR LOOP cursors, Cursor Attributes)
 
21:53
This video is to understand the concept of Oracle PL/SQL Cursors (implicit and explicit ). The video includes tutorial on how to work with Oracle PL/SQL Cursor in everyday programming.
Views: 3894 Kishan Mashru
SQL Server DBA Tutorial 137-How to Find out SQL Server Configuration Changes in last Hour
 
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This video explain how to find out SQL Server Configuration Changes in last hour, how to find out who and what changed in SQL Server Configurations. It shows multiple ways of looking at the SQL Server configuration changes history, what is default trace in SQL Server, how to enable and disable default trace in SQL Server, best practices to define SQL Server Configuration changes history retention period, location of default trace in SQL Server, how to read default trace event selection using T-SQL Script, how to open default trace in SQL Server Profiler and resolution to the error " Failed to open the trace, Access denied" Blog post link for the video http://sqlage.blogspot.com/2015/03/how-to-find-out-sql-server.html Visit our website to check out SQL Server DBA Tutorial Step by Step http://www.techbrothersit.com/2014/12/sql-server-dba-tutorial.html
Views: 3143 TechBrothersIT
Query Execution
 
11:37
Тема Доклада: Исполнительное ядро (Execution Engine) SQL Server Структура доклада: • Архитектура и прохождение запросов (connection, session, task, workers, thread) • Упрощение (simplification), алгебраизация (algebraization), оптимизация • Компиляция • Исполнение Докладчик: Александр Каленик Alexander Kalenik is Microsoft CIS technology lead, Senior Premier Field Engineer for areas of SQL Server and Windows Cluster. He is working for Microsoft almost 9 year. He has a big experience in SQL Server from 1991. He is author of books about SQL Server and author of 2 blogs on TechNet for areas SQL Server and Windows Cluster. Alexander is PHD in area of Computer Science.
How to increase Java heap size (Make Java faster)
 
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*READ* Increasing Java heap size can increase the performance of Java by allocating more RAM to run with Java, making it faster. -Xmx480M Replace 480 with the amount of RAM (In megabytes!) you want to allocate to Java. DO NOT USE ALLOCATE ALL OF YOUR RAM TO JAVA! Follow me on twitter! @Tubbsmcfat
Views: 87468 AaronTech
inroduction to sql - Restricting and Sorting Data
 
02:23
Course Description – sql1 COURSE DESCRIPTION: The Oracle server extends the data modeling capabilities to support an object relational database model that brings object-oriented programming, complex data types, complex business objects, and full compatibility with the relational world. It includes several features for improved performance and functionality of online transactionprocessing (OLTP) applications, such as better sharing of run-time data structures, larger buffer caches, and deferrable constraints. Data warehouse applications will benefit from enhancements such as parallel execution of insert, update, and delete operations; partitioning; and parallel-aware query optimization. COURSE OBJECTIVES: in this course List the capabilities of SQL SELECT statements Execute a basic SELECT statement Differentiate between SQL statements and iSQL*Plus commands Limit the rows retrieved by a query Sort the rows retrieved by a query WHO SHOULD ATTEND?   COURSE OUTLINE: In this lesson, you should have learned howtheOracleserverusesconstraints to prevent invalid data entry into tables. You also learned how to implement the constraints in DDL statements.   Writing Basic SQL SELECT Statements Restricting and Sorting Data Single-Row Functions Displaying Data from Multiple Tables Aggregating Data Using Group Functions Subqueries Producing Readable Output with iSQL*Plus Manipulating Data Creating and Managing Tables Including Constraints
Part 5: Partition creation, ASM RPM installation & ASM DISK creation & grid software Installation
 
22:03
Real Application Clusters Oracle Real Application Clusters (RAC) is a database clustering solution that allows more than one instance to mount and open an Oracle database. RAC can only be used on special clustered systems with shared disk storage and a private network interconnect. A normal Oracle installation consists of a single Oracle instance that accesses a database on the same computer system. In contrast, RAC allows multiple instances on different computer systems (nodes in a cluster) to access the same database files simultaneously. Communication between instances is managed by the Distributed Lock Manager (DLM). To address the possibility of two or more instances attempting to modify the same information simultaneously, Oracle uses up to ten additional background processes, named LCK0 through LCK9, to lock the resources in use by these instances. RAC is available with Oracle Enterprise Edition, and under certain conditions, with Standard Edition as well. These restrictions (for Standard Edition) include: • Must use Oracle Clusterware (no third-party clusterware allowed); • Must use ASM to store database files; and • Can only use a max of 4 CPU sockets in the cluster (either 2 nodes with 2 CPUs each, or 4 nodes with 1 CPU each). • RAC was previously called Oracle Parallel Server (OPS). Oracle re-branded OPS as RAC when they released Oracle 9i. Benefits Running Oracle in RAC mode can benefit you in the following ways: • High availability - If some nodes fail, the remainder of the nodes will still be available for processing requests. Failover support is available from Oracle 8 with Oracle's Transparent Application Failover (TAF) technology and from Oracle 10g, server side load balancing. • Speedup (increased transaction response time) - RAC normally adds some overhead. However, for some DSS applications one can achieve increased performance by running operations in parallel (mainly for DSS applications). • Scale-up (increased transaction volume) - RAC can be used to provide increased application scalability (mainly used for OLTP applications).
Views: 561 OnLinE ReSoUrCe

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