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Table Shrinking in Oracle Database
 
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1.Shrink the Table: Shrinking is started from 10g. In this method I’m using user u1 and table name sm1. Now I’m deleting some rows in sm1 COUNT ---------- 1048576 Table sm1 has 1048576 rows. [email protected]: delete from sm1 where deptno=10; 262144 rows deleted. I deleted above number of rows. Rows COUNT ---------- 786432 And I’m giving commit [email protected]: commit; Commit complete. So now we have 786432 rows in sm1 table. Now see the following command [email protected]: select OWNER,TABLESPACE_NAME,SEGMENT_NAME,SEGMENT_TYPE,BYTES/1024/1024||' mb'"space",BLOCKS,EXTENTS from dba_segments where tablespace_name like 'U%TS'; OWNER TABLESPACE_NAME SEGMENT_NAME SEGMENT_TYPE space BLOCKS EXTENTS ----- --------------- ------------- ------------- ------ ---------- ---------- U1 U1TS SM1 TABLE 29 mb 3712 44 After I deleted some rows in sm1 table still above result showing same values, so now our duty is shrink this table. This is done by following 2 ways, i By using COMPACT key word: In this method shrinking is done in two phases. In the first phase all fragmented space are just defragmented, but still the High Water Mark is persist with last used block only. That mean used free blocks are not de allocated and HWM is not updated here. Issue the following command before use shrink command. [email protected] alter table sm1 enable row movement; Table altered. There is particular use with above command, when we shrink the table all rows are moves to contiguous blocks, so here row movement should be done. By default the row movement is disabled for any table, so above command enabled the row movement. Then execute shrink command now. [email protected]: alter table sm1 shrink space compact; Table altered. Now see the space of table by using below command. [email protected]: select OWNER,TABLESPACE_NAME,SEGMENT_NAME,SEGMENT_TYPE,BYTES/1024/1024||' mb'"space",BLOCKS,EXTENTS from dba_segments where tablespace_name like 'U%TS'; OWNER TABLESPACE_NAME SEGMENT_NAME SEGMENT_TYPE space BLOCKS EXTENTS ----- --------------- ------------- ------------- ------ ---------- ---------- U1 U1TS SM1 TABLE 29 mb 3712 44 So here seems nothing happened with above shrink command, but internally the fragmented space is defragmented. But the high water mark is not updated, used free blocks are also not de allocated. For de allocating the used blocks we have to execute below command. This is the second phase. [email protected]: alter table sm1 shrink space; Table altered. Now see the space by using below command. [email protected]: select OWNER,TABLESPACE_NAME,SEGMENT_NAME,SEGMENT_TYPE,BYTES/1024/1024||' mb'"space",BLOCKS,EXTENTS from dba_segments where tablespace_name like 'U%TS'; OWNER TABLESPACE_NAME SEGMENT_NAME SEGMENT_TYPE space BLOCKS EXTENTS ----- --------------- ------------- ------------- ---------- ---------- ---------- U1 U1TS SM1 TABLE 20.8125 mb 2664 36 So now the space of sm1 table is reduced. Note: Actually the alter table sm1 shrink space command will complete these two phases of the shrinking of table at a time. But here we done shrink process in two phases because when we use alter table sm1 shrink space command the table locked temporarily some time period, during this period users unable to access the table. So if we use alter table sm1 shrink space compact command the table is not locked but space is defragmented. When we not in business hours issue the second phase shrink command then users are won’t get any problem. ii Because of above method the table dependent objects are goes to invalid state, to overcome this problem we have to use below command. [email protected]: alter table sm1 shrink space cascade; Table altered. The above command also shrinks the space of all dependent objects. We also do this in two phases like above two phases. See the below command. [email protected]: alter table sm1 shrink space compact cascade; Table altered. And then [email protected]: alter table sm1 shrink space cascade; Table altered. Transporting tablespace to different platform by Using RMAN : https://www.youtube.com/watch?v=CN401PUKK4A Oracle EBS apps Upgrade from 12 2 to 12 2 5 (start CD 51) : https://www.youtube.com/watch?v=zeO4goqR70Y Transport tablespace by using RMAN.: https://www.youtube.com/watch?v=YG6kWX7Par8
Views: 6765 BhagyaRaj Katta
How to Convert a Non-Partitioned Table to Partitioned using Oracle Database 12c R2
 
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Oracle Database 12c Release 2 New Feature! Learn how to convert a non-partitioned table to a partitioned table - Online! This new method - using ALTER TABLE MODIFY - is much simpler than DBMS_REDEFINITION. In this free tutorial from SkillBuilders and Oracle Certified Master DBA John Watson you'll see a demonstration of converting the table and the impact on the underlying table and indexes. See all our free Oracle Database Tutorials at http://www.skillbuilders.com/free-oracle-tutorials.
Views: 3135 SkillBuilders
SQL with Oracle 10g XE - Using ALTER TABLE to Modify Table Columns
 
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In this video I use the ALTER TABLE command to modify an existing field column. The command will allow you to change the data types, whether the field can be null, or even the primary key. When using the ALTER TABLE command you would use the keyword MODIFY to make changes to an existing column. Be careful when changing a data type of the null field as existing data may cause an error if not in compliance with the new change. The code I used to alter the Books table is : ALTER TABLE BOOKS MODIFY ISBN_10 VARCHAR(13); This video is part of a series of videos with the purpose of learning the SQL language. For more information visit Lecture Snippets at http://lecturesnippets.com.
Views: 15723 Lecture Snippets
How to Shrink table in Oracle..
 
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this video will help how to reclaim space from the table.
Views: 1734 oracdb
exchange Partition , Move partition in oracle
 
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exchange Partition , Move partition in oracle Possible operations with partitions 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 Add Drop Rename Split Move ( Moving from Tablespace to tablespace) Exchange (Table to Table(non Partitioned table)) not partitioned only exchanging data (p)
Views: 1159 TechLake
Database Oracle Compress
 
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Ini merupakan cara kompresing database oracle, video ini dibuat oleh Rony Ihsan, salah satu senior Technical Advisor Database.
Reclaiming free space from innodb tables
 
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Reclaiming free space from innodb tables
Views: 138 Ask Guru
SQL Server Tutorial 20:  Table, Index and Row Compression
 
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How to use table, index and row compresson with SSMS or T-SQL. For more info, or a copy of the scripts used in this tutorial, please email me at [email protected]
Views: 2981 Johnny Deluca
SQL READ ONLY TABLE.
 
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In this video i'll show what is read only table in SQL.
Views: 332 RANJIT
How to table create in oracle
 
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Design Tables Before Creating Them. Consider Your Options for the Type of Table to Create. Specify the Location of Each Table. Consider Parallelizing Table Creation. Consider Using NOLOGGING When Creating Tables. Consider Using Table Compression. Consider Encrypting Columns That Contain Sensitive Data. https://youtu.be/0lwvKpmztJY
Views: 61 Future Exam
Oracle Database 12c: Partitioning Improvements with Tom Kyte
 
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Tom Kyte introduces the new partitioning improvements in Oracle Database 12c, followed by a demo of global index maintenance. For more information: "Asynchronous Global Index Maintenance for Dropping and Truncating Partitions" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=VLDBG14107 "Changes for Very Large Databases and Partitioning in Oracle Database 12c Release 1" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=VLDBG14100 "ALTER INDEX COALESCE Clause" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=SQLRF52782 "DBMS_PART.CLEANUP_GIDX Procedure" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=ARPLS74409
Views: 13259 OracleDBVision
Backup Full - Oracle
 
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Esse vídeo tem com objetivo mostrar como fazer um backup full do banco de dados oracle usando o Oracle Recovery Manager-RMAN. run{ allocate channel c1 device type disk; allocate channel c2 device type disk; allocate channel c3 device type disk; sql 'alter system switch logfile'; sql 'alter system switch logfile'; sql 'alter system switch logfile'; sql 'alter system checkpoint'; backup as compressed backupset full database tag 'Full_Banco' format '/home/oracle/backup/Full_banco-%T-%I-%d-%s.bkp'; backup current controlfile tag 'CTF_FULL' format '/home/oracle/backup/CTF_FULL-%T-%I-%d-%s.bkp'; backup as compressed backupset spfile tag 'SPF_FULL' format '/home/oracle/backup/SPF_FULL-%T-%I-%d-%s.bkp'; backup as compressed backupset archivelog all delete all input tag 'ARCH_FULL' format '/home/oracle/backup/ARCH_FULL-%T-%I-%d-%s.bkp'; }
Views: 1385 Target Database
TSQL Sparse Columns
 
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Description
Views: 221 Ted on MSSQL
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
Let's Learn Teradata Lesson 39: Columnar Tables!
 
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Explore Teradata with Tera-Tom of Coffing Data Warehousing! In this lesson, learn more about Columnar Tables!
Part 2 SQLServer Partitioned Table
 
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Arabic Series for SQL Server create Database Partitioned Table
Views: 2518 amosaEgy
Read-Only Tables in Oracle
 
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Here's a quick video showing how to create Read-Only tables in Oracle. For more information see: https://oracle-base.com/articles/11g/read-only-tables-11gr1 Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by David Peake Blog: http://dpeake.blogspot.com/ Twitter: https://twitter.com/orcl_dpeake Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 855 ORACLE-BASE.com
Manage Oracle Tablespaces with Oracle Enterprise Manager 12C
 
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Video tutorials on how Manage Oracle Tablespaces using Oracle Enterprise Manager 12C For more Database Administration articles and scripts go to www.aodba.com More Articles, Scripts and How-To Papers on http://www.aodba.com
Views: 7027 AO DBA
Apache Hive - 01 Partition an existing data set according to one or more partition keys
 
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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/itversityin https://twitter.com/itversity
Views: 3323 itversity
CA Datacom® Presspack: Data Compression Options
 
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In this video you will learn about data compression options using ‘what if’ report analysis in CA Datacom® /DB, featuring compression with CA Datacom Presspack for z/OS systems. Music adapted from “Ourobouros” Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0. http://creativecommons.org/licenses/by/3.0/
Views: 51 Educate
Partitioning Basics: Treating your tables like Lego
 
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Do you have tables and indexes that have grown really large? Are you moving around a lot more data than you used to? Are your windows for jobs and maintenance getting tighter? If you answered yes to any of these questions, partitioning may be for you! With partitioning, you can break a table or index down into smaller more manageable chunks. It can help you perform maintenance on just part of a table or index. You can even move data in and out of tables with quick and easy metadata only operations. We’ll go over basic partitioning concepts such as horizontal vs. vertical partitioning, and techniques like partitioned views and full blown table partitioning. We’ll look at how partitioning affects things under the hood. Finally you'll see some cool demos/tricks around index maintenance and data movement. At the end of this session you’ll have a firm understanding of how partitioning works and know how to make decisions on how and when to implement. You'll learn… • The components of table partitioning and how they fit together • How to make your index maintenance partition aware • How Partition elimination can help your queries • How to split different parts of tables over different storage tiers • How to manage partitions. We'll demo this by implementing the sliding window technique. Brandon Leach is a senior DBA with SurveyMonkey in Palo Alto, CA. He is a frequent speaker at events such as SQLSaturdays, user groups, and more recently the PASS Summit. When not working or at events he can be found spending time with his family and tinkering in his home lab.
Views: 1440 DBAFundamentals
How to implement VPD in Oracle Database (Part 1)
 
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How to implement VPD (Virtual Private Database) in Oracle Database(9i,10g,11g,12c) Enterprise Edition. PART 1 Video links: Part 1 https://youtu.be/JVvtvh3cN1I Part 2 https://youtu.be/xLcin_Wgbvs Part 3 https://youtu.be/mE1cSbmEwnQ This is Part of Oracle Advance Security. Please view my earlier videos on how to create a database , if you are not having a database. 1)First we will create the users needed for our environment a)Owner of the schema which will have the objects or tables b)security admin user c)non owner user1 & user2 which will have limited access as per data in the rows (here user1 will have access to data with HR and user2 with FINANCE) Object owner creation: -------------- CREATE USER schemaowner IDENTIFIED BY schemaowner DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp; GRANT connect, resource TO schemaowner; alter user schemaowner quota unlimited on users; security admin user creation: -------------- CREATE USER SEC_ADM IDENTIFIED BY sec_adm default tablespace users temporary tablespace TEMP; GRANT CONNECT, RESOURCE TO sec_adm; alter user sec_adm quota unlimited on users; garnts for the sec_adm user: ------------- GRANT CREATE SESSION,CREATE ANY CONTEXT,CREATE PROCEDURE,CREATE TRIGGER, ADMINISTER DATABASE TRIGGER TO SEC_ADM; GRANT EXECUTE ON DBMS_SESSION TO SEC_ADM; GRANT EXECUTE ON DBMS_RLS TO SEC_ADM; create user with restricted access on table: ----------------------- CREATE USER user1 IDENTIFIED BY user1 DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp; GRANT connect, resource TO user1; CREATE USER user2 IDENTIFIED BY user2 DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp; GRANT connect, resource TO user2; Now we will log in as schemaowner and create one tables : ------------------- CONN schemaowner/schemaowner This table is the table which contains the secure as well as un-restricted data CREATE TABLE user_data (column1 VARCHAR2(50) NOT NULL, user_id VARCHAR2(30) NOT NULL); Now to access this table from other schema we need to give the select and insert privs to: GRANT SELECT, INSERT ON user_data TO sec_adm,user1, user2;
Views: 839 OracleDBA
Oracle SQL Tutorial 22 - Why Primary Keys Shouldn't Change
 
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In the last video I mentioned that with our database design it is important to make sure that nobody tries to update a user's username. What happens if they do? Nothing horrible, Oracle will just throw an error. That's not such a big deal, but if you are hoping to make some kind of application that allows someone to change their username, this is not the best set up. Why? If you look at the projects table, we have a foreign key that references the username. Let's assume for a moment that Oracle allows you to do anything with your data. That means that if a user updates their username, there will be projects created by users that don't exist. Or a user could change their name to the previous owner. To fix this problem, we would need something such as an ON UPDATE CASCADE command for our foreign key. That would mean that if the user updated their username, the columns that reference that username would also update to the new value. This exists in some database management systems, but this does not exist in Oracle at the time of this video. How do we get around this problem? I'm sure we could conjure up something to allow us to update the username, but the easiest solution is to reference the user_id instead of the username. That way, when the username is updated, nothing changes inside of the foreign key. As a general rule, primary keys should never change. Foreign keys CAN change, but they should not change because a primary key changed. So, if we did happen to use a username as a column, it would be frowned upon if the username had to change because the column it references changes. However, it would be acceptable to change the foreign key if we needed to point to a new entity in the users table. Even if a username is never intended to change, these complications bother a lot of people. You can mitigate these problems by only referencing surrogate keys in foreign keys. This has the downside though that when you retrieve the data, you are going to have to do more work to make the data readable. For example, we had a table that was called project_users. It is essentially a table that says what users are part of what projects. We could have the foreign keys reference the project's name and the user's username. Then when you could say SELECT * FROM project_users. The data would be completely readable without doing anything. If you switch to only referencing surrogate primary keys, you will have a bunch of random numbers that don't mean anything and will have to be joined with other tables…which is really super frustrating when later you have to join a thousand tables to read anything. Which side do you prefer? Pick a side. Choose wisely. I'll see you all in the next video ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HELP 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: 5637 Caleb Curry
MariaDB TX 3.0, the OSS Alternative to Closed Databases like Oracle, MSSQL & DB2
 
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MariaDB TX 3.0, the OSS Alternative to Closed Databases like Oracle, MSSQL & DB2 by Rasmus Johansson, VP of Engineering, MariaDB • Funny pre-event tech-trivia: https://youtu.be/rgBpE9dwBjs We have a reason to celebrate! You finally have an open-source alternative to proprietary databases like Oracle, IBM DB2 and MS SQL Server! In the past, features like temporal tables and queries, purpose-built storage engines, data masking and obfuscation with instant, invisible or compressed columns required the use of a proprietary database, but now MariaDB TX 3.0 delivers these in an enterprise open source database. This presentation introduces the latest features available in MariaDB TX 3.0, why they were developed, how you can use them and what they mean for your business. You will learn about: • Oracle compatibility, including sequences and stored procedures • Temporal tables and queries, as well as deployment strategies • The use of different storage engines for different tables • Protecting personal data with masking and obfuscation • Adding columns without ever needing to rebuild tables As part of our celebration, we will be pouring Salmiakki Koskenkorva, a licorice-flavored black vodka that is a favorite of Finland! ••• Rasmus Johansson, VP of Engineering, MariaDB ••• Rasmus manages MariaDB Server development. He joined Monty Program Ab in 2010 where he served as the COO of the company. Monty Program became MariaDB Corporation after merging with SkySQL in 2013. Previously, Rasmus worked for Microsoft where he focused on SQL Server and before that he worked for CGI and Icon Medialab. He started his career as a developer and still enjoys being part of engineering. He is based in Helsinki, Finland.
SQL Server Tutorial 21: Understanding Page Compression
 
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How to compress a page using SSMS, or T-SQL. For more info, or a copy of the scripts used in this tutorial, please email me at [email protected]
Views: 1648 Johnny Deluca
Oracle Database tutorial 67: How to create Tablespace using SQL Developer By RebellionRider
 
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Learn (The easiest way)how to create tablespace in oracle database using Oracle SQL Developer GUI: SQL Developer trips and tricks tutorial ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/tablespace-using-sql-developer Previous Tutorial ► How to make SYS user Connection: http://bit.ly/how-to-create-new-connection-in-sql-developer ► Permanent tablespace https://youtu.be/vkwKZIssvfc ► Temporary Tablespace https://youtu.be/Hc_OXitKgWM ► Undo Tablespace https://youtu.be/HlSrHX7ffbI ------------------------------------------------------------------------- ►►►Let's Get Free Uber Cab◄◄◄ Use Referral Code UberRebellionRider and get $20 free for your first ride. ------------------------------------------------------------------------- ►►►Help Me In Getting A Job◄◄◄ ►Help Me In Getting A Good Job By Connecting With Me on My LinkedIn and Endorsing My Skills. All My Contact Info is Down Below. You Can Also Refer Me To Your Company Thanks ------------------------------------------------------------------------- Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=kb4rc1 -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! -------------------------------------------------------------------------- Amazon Wishlist: http://bit.ly/wishlist-amazon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at for E-mail address please check 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: 31050 Manish Sharma
SQL 2008 Series: SQL Partitions / partitioning
 
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http://www.creativecommit.com This demo gives a brief overview of SQL partitions/partitioning/partition functions/partition schemes.
Views: 15259 creativecommIT
How to Create Partition table in SQL Server
 
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how to create partition table in sql server lite
Views: 1130 SOKREY HOUSAN
Checkpoint Revalidate
 
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The REVALIDATE option regenerates the table headers for a partitioned table or uncompressed join index and optionally verifies and corrects the row partitioning for a table (but not for a join index) if you specify the WITH DELETE or WITH INSERT null partition handling options. You can specify the REVALIDATE option for unpartitioned tables and join indexes without also specifying PRIMARY INDEX. This makes revalidation applicable whether or not the table or join index has a primary index. You must specify the REVALIDATE option without also specifying PRIMARY INDEX for NoPI tables and column‑partitioned tables and join indexes. Otherwise, Teradata Database aborts the request and returns an error to the requestor. The REVALIDATE option also provides the ability to revalidate some data dictionary columns. REVALIDATE requests do not verify the column partitioning of a column‑partitioned table or join index. If partitioning errors are detected for a table (but not a join index), an ALTER TABLE REVALIDATE request corrects them. REVALIDATE also revalidates the following Data Dictionary table columns. wave web technology was established in 2012, and has a dynamic team of professional web developers, web designers, SEO experts and customer support . website : www.wavewebtech.com https://www.facebook.com/wavewebtechnologies https://twitter.com/wavewebtechnolo https://plus.google.com/collections/
Views: 6 vikas verma
Oracle SQL Programming - Searching and Sorting (SELECT)
 
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A practical demonstration of searching and sorting records using Oracle. Includes the use of various WHERE clause operators that can be used with the SELECT keyword, and the use of the ORDER BY clause.
Views: 114 Brian Green
TablePartitioning.mp4
 
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Partition Tables Sql Server 2008
Views: 3092 Muhammad Shalaby
SQL Server tutorial 68: Altering Triggers
 
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How to alter an existing trigger in SQL Server 2012. For more info, or a copy of any of the scripts used in any of my tutorials, please email me at [email protected]
Views: 521 Johnny Deluca
How to minimize the size of fact tables in SQL Server
 
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Fact tables often grow large, so it's important to keep them as space-efficient as possible. In this video, Microsoft Certified IT Professional Jon Seigel explains three techniques to help keep your fact table sizes at their minimum. Read more about Data Compression: http://technet.microsoft.com/en-us/library/cc280449.aspx Read more about SPARSE columns: http://technet.microsoft.com/en-us/library/cc280604.aspx Visit my channel for more database administration videos: https://www.youtube.com/voluntarydba Subscribe to get notified about my latest videos: https://www.youtube.com/voluntarydba?sub_confirmation=1 Read additional content on my blog: http://voluntarydba.com Follow on Twitter: https://twitter.com/voluntarydba Like on Facebook: https://facebook.com/voluntarydba
Views: 2455 Voluntary DBA
Ask Tom Office Hours: Database Security - Key Features
 
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Held on March 8 2018 The database is at the heart of every application; it is critical to every enterprise that their data be secure. In this session, Russ Lowenthal , Director of Product Management for Oracle Security Products, reviews critical features in Oracle Database 12c (12.2 = 18c) and answers questions about Audit Vault, Key Vault, Row Level Security, Security Assessment Tool, Wallets and Native Network Encryption. 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: 220 Oracle Developers
Trailer for SQL 2012 Developer tutorial: Partitions
 
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Trailer for SQL 2012 Developer tutorial: Partitions with Expert Instructor -- Frank Tillinghast. Get full course details @ http://bit.ly/12bB9bP In this course we'll explore partitioning, and specifically how it's implemented using SQL Server 2012. Partitioning is a way to manage large amounts of data, and while certainly not a new concept, SQL Server has made improvements over the years that make your job as a database architect and developer easier. We'll start off by discussing the evolution of partitioning in SQL Server. You'll learn about partition keys, schemas and functions and how they affect tables, indexes, and the organization of your data. Once you have an understanding of the basics, we'll move on to discuss methods for querying partitions. As time goes on, it may be necessary to make adjustments to your partitions. Next you'll learn how to merge or split partitions, switch out partitions, and make modifications to partition schemes. The course then concludes with some tips on how performance tuning.
Views: 318 LearnNowOnline
Mssql2008 Partitioning
 
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- The subject of this video is partitioning in MSSQL 2008. - Language is Turkish.
Views: 37 SertifikaTV
Apache Hive - Create Hive External Table
 
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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/itversityin https://twitter.com/itversity
Views: 8927 itversity
Microsoft SQL Server Table Partitioning
 
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Denny Cherry talks about SQL Server Table Partitioning features which can improve query performance and reduce downtime when loading and pruning data. Denny is an independent consultant with over a decade of experience working with platforms such as Microsoft SQL Server, Hyper-V, vSphere and Enterprise Storage solutions. Denny's specialties include system architecture, performance tuning, replication, and troubleshooting. He is a Microsoft Certified Master as well a Microsoft MVP, and is the principal consultant at Denny Cherry & Associates. "At SQL Saturday Silicon Valley I was talking about table partitioning and how to implement it and why do you want to implement it. It is technology that a lot of people aren't familiar with because it is an enterprise only feature so they really do not get exposed to it until they actually land at that big shop that really needs it and even once they get in to those larger shops they may not necessarily really know when to apply it and when isn't a good time to apply it and what some of the best practices are around implementing it so it is one of the things that is used for really, really large datasets so doing it wrong is really expensive because fixing it is even more expensive because we are usually talking about moving 100s of billions of [rows] may be trillions of [rows] and I mean it just takes forever to move that amount of information so having a good foundation to start on when you are doing your research is really important so that is kind of what I covered in this session today and I did some quick demos on how to actually do it, how to move data, how to truncate data quickly in a partition table and stuff like that. There is a lot of really good information on Google that you can use to learn about table partitioning. One of the nice things about partitioning is because so many few people are using it there is not a lot of bad information out there. There are a lot of videos available from PASS and from Vconference.com and various other websites that are going to give you a lot of really good information and of course you get a lot of SQL Saturday where you will find somebody talking about table partitioning in some way so you can get some good information from them as well."
Views: 1297 DesignMind
How to Add a Datafile to eHealth
 
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A short walk through of adding a datafile to a tablespace in eHealth.
Views: 179 Educate
Making changes to an Existent Table in SQL Server 2008 By Vamsi
 
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Making changes to an Existent Table in SQL Server 2008
Views: 1085 MyDream MyLife
Let's Learn Netezza! Lesson 29: Cluster Based Tables (CBT)
 
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Explore Netezza with Tom Coffing of Coffing Data Warehousing! In this lesson, learn about Cluster Based Tables in your Netezza System!
Top 25 My Sql Interview Question And Answers For Freshers
 
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What is MySQL? A:MySQL is an open source DBMS which is built, supported and distributed by MySQL AB What are the technical features of MySQL? A:MySQL database software is a client or server system which includes Multithreaded SQL server supporting various client programs and libraries Why MySQL is used? A:MySQL database server is reliable, fast and very easy to use. This software can be downloaded as freeware and can be downloaded from the internet. What are Heap tables? A:HEAP tables are present in memory and they are used for high speed storage on temporary basis. What is the default port for MySQL Server? A:The default port for MySQL server is 3306. What are the advantages of MySQL when compared with Oracle? A:MySQL is open source software which is available at any time and has no cost involved. MySQL is portable GUI with command prompt. Administration is supported using MySQL Query Browser Differentiate between FLOAT and DOUBLE? A:Floating point numbers are stored in FLOAT with eight place accuracy and it has four bytes. Floating point numbers are stored in DOUBLE with accuracy of 18 places and it has eight bytes. Differentiate CHAR_LENGTH and LENGTH? A:CHAR_LENGTH is character count whereas the LENGTH is byte count. The numbers are same for Latin characters but they are different for Unicode and other encodings. How to represent ENUMs and SETs internally? A:ENUMs and SETs are used to represent powers of two because of storage optimizations. What is the usage of ENUMs in MySQL? A:ENUM is a string object used to specify set of predefined values and that can be used during table creation. Define REGEXP? A:REGEXP is a pattern match in which matches pattern anywhere in the search value. Difference between CHAR and VARCHAR? A:When CHAR values are stored then they are right padded using spaces to specific length. Trailing spaces are removed when CHAR values are retrieved. Give string types available for column? A:The string types are: SET BLOB ENUM CHAR TEXT VARCHAR How to get current MySQL version? A:SELECT VERSION (); is used to get the current version of MySQL. What storage engines are used in MySQL? A:Storage mechanism Locking levels Indexing Capabilities and functions. What are the drivers in MySQL? A:PHP Driver JDBC Driver ODBC Driver C WRAPPER PYTHON Driver PERL Driver RUBY Driver CAP11PHP Driver Ado.net5.mxj What does a TIMESTAMP do on UPDATE CURRENT_TIMESTAMP data type? A:TIMESTAMP column is updated with Zero when the table is created. UPDATE CURRENT_TIMESTAMP modifier updates the timestamp field to current time whenever there is a change in other fields of the table. What is the difference between primary key and candidate key? A:Primary Key is also a candidate key. By common convention, candidate key can be designated as primary and which can be used for any foreign key references. How do you login to MySql using Unix shell? A:We can lo What does myisamchk do? A:It compress the MyISAM tables, which reduces their disk or memory usage. How do you control the max size of a HEAP table? A:Maximum size of Heal table can be controlled by MySQL config variable called max_heap_table_size. What is the difference between MyISAM Static and MyISAM Dynamic? A:In MyISAM static all the fields will have fixed width. The Dynamic MyISAM table will have fields like TEXT, BLOB, etc. to accommodate the data types with various lengths. What are federated tables? A:Federated tables which allow access to the tables located on other databases on other servers. What, if a table has one column defined as TIMESTAMP? A:Timestamp field gets the current timestamp whenever the row gets altered. What happens when the column is set to AUTO INCREMENT and if you reach maximum value in the table? A:It stops incrementing. Any further inserts are going to produce an error, since the key has been used already.
Views: 19528 Latestoffcampus
SQL Snacks - Table Partitioning 101
 
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Ayman El-Ghazali www.TheSQLPro.com @TheSQLPro SQL Snacks -Table Partitioning 101 Original Blog Post: http://thesqlpro.com/2014/04/08/sql-snacks-video-sql-server-table-partitioning-101/
Views: 3041 Ayman El-Ghazali
Understanding Data Compression in SQL Server Sample Lecture
 
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https://www.udemy.com/understanding-data-compression-in-sql-server Use coupon code YOU50TUBE at the above link for a 50% discount! This is a sample lecture from my online training course "Understanding Data Compression in SQL Server."
Views: 1649 Shaun Stuart
AskTOM Office Hours: Get the Most Out of Your Database In-Memory Implementation
 
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Held on June 13 2018 Explore and get the best out of Oracle Database In-Memory Implementations with Markus Kissling, Product Manager for Database In-Memory in EMEA, based in Germany. The session began with an overview about Database In-Memory, the breakthrough with the Dual Format Architecture, allowing you to simply flip a switch to active, populate the tables, partitions, sub-partitions, materialized views into the column store when altering this segments with inmemory subclause and you’re done. We explored how to find the candidates for In-Memory with our advisors. We also went deep on the following topics: 9:00 What are Analytic Queries and how do they have to look to get the most out of things like In-Memory Aggregation? 21:50 The Dual Format Architecture 22:30 Apply the latest Proactive Bundle Patches to get the latest innovations, in addition to fixes. 24:50 Think about proper preparation and unset some Database Parameters (e.g. deactive dynamic sampling). 28:30 A short demo demonstrating how easy it is to use Database In-Memory. 47:20 Key resources on our blog http://blogs.oracle.com/in-memory. 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: 152 Oracle Developers
Order by, Aggregate, Group by Functions on HIVE tables - Big data - Hadoop Tutorial - Session 17
 
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In this video you will learn about Order by, Aggregate, Group by Functions on HIVE tables.
Views: 801 Trending Courses
CMU Advanced Database Systems - 21 Vectorized Query Execution Part I (Spring 2018)
 
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Slides PDF: https://15721.courses.cs.cmu.edu/spring2018/slides/21-vectorization1.pdf Reading List: http://15721.courses.cs.cmu.edu/spring2018/schedule.html#apr-18-2018 Andy Pavlo (http://www.cs.cmu.edu/~pavlo/) 15-721 Advanced Database Systems (Spring 2018) Carnegie Mellon University
Views: 474 CMU Database Group
04 06  Unicode Basics
 
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Views: 11 bumbum

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