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Oracle DBA - Extents and Segments
 
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http://oracledbazerotopro.com This tutorial explains Oracle Extents and Segments.
Views: 25221 HandsonERP
Space Management in Extents and Segments - DBArch Video 31 / DBPerf Video 13
 
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In this video you will understand about the following - Dictionary managed Vs Locally Managed Tablespaces - Manual Vs Automatic Segment Space Management - PCTFREE and PCTUSED - Row Migration and Row Chaining . Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 9602 Ramkumar Swaminathan
Define Segment, Extent, Block (Hindi) | Prof. Jayesh Umre
 
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Solution to the question submitted by students. Define Segment, Extent and Block? (RGPV Dec 2014,Dec 2010, Dec 2009) Sol. Block: A database block is the smallest unit of storage in Oracle. Oracle manages the storage space in the datafiles of its database in these units. The size of block is a specific number of bytes of storage within a given tablespace. The default block size is specified by the Oracle initialization parameter that is DB_BLOCK_SIZE. Extent: An extent is the next level of logical grouping in the database. An extent consist of one or more database blocks. When we enlarge a database object, the spece added to the object is allocated as an extent. Segment: Segment is a group of extents that form a database object that oracle treats as a unit, such as table. There are four types of segments- Data segment – It is a storage part. Index segment – Its hold all of its data. Temporary segment – It’s a temporary work space. Undo segment – to do transaction undo
Views: 2301 Study Everyday
Relationships of Physical and Logical Storage structures in an Oracle Database - DBArch Video 22
 
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In this video you will understand the Relationships between the Physical files and Logical Components - Tablespace, Segments, Extents and Oracle Blocks in an Oracle Database . Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 15890 Ramkumar Swaminathan
Oracle DBA - Blocks
 
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http://oracledbazerotopro.com This tutorial explains Operating System Blocks and Database Blocks.
Views: 35268 HandsonERP
Structure of Data Blocks - DBArch Video 29
 
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In this video you will understand about the contents of a Data Block. You will learn about Block Header, Transaction slots, Row Directory and space for Data / rows. . Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 5491 Ramkumar Swaminathan
What are Data Blocks - DBArch Video 28
 
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In this video you will learn about an Oracle Database block, what are the possible sizes and how it impacts the tables. Also you will learn about setting up multiple block sizes and how to configure the Buffer Cache for a database with multiple block sizes . Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 4013 Ramkumar Swaminathan
WHAT IS THE DIFFERENCE BETWEEN A DATA BLOCK, AN EXTENT AND A SEGMENT
 
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WHAT IS THE DIFFERENCE BETWEEN A DATA BLOCK, AN EXTENT AND A SEGMENT?
Views: 917 OCP Technology
Oracle DBA - Rollback Segment
 
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http://oracledbazerotopro.com This tutorial explains rollback segments and undo segments.
Views: 22319 HandsonERP
Oracle Database Tutorial 63 : Introduction to Tablespace In Oracle Database
 
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Introduction to tablespace in oracle database consist Brief intro of tablepsace, type of tablespace, Big and small file tablespace, intro of Data files in oracle By manish sharma RebellionRider ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/tablespace-introduction-rebellionrider Previous Tutorial ► Indexes https://youtu.be/F5NrQYD4a9g ------------------------------------------------------------------------- ►►►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: 37292 Manish Sharma
Managing Database Structure -Tablespaces and Datafiles part 1st
 
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Hi friends in this video i am going to explain you how to create alter tablespace and datafile in oracle. #ManagingDatabaseStructure #TablespacesandDatafiles Oracle database Unbeatable,Unbreakable Platform..
Views: 11721 Oracle World
7  datafiles extents segment
 
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Please go to https://4techbees.wordpress.com/ to get docs on oracle training and to view my blog posts.
Views: 329 mohan k
Oracle DBA - Data Segment
 
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http://oracledbazerotopro.com This tutorial explains Data Segment.
Views: 14813 HandsonERP
Oracle DBA - Oracle Logical Storage Structures
 
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http://oracledbazerotopro.com This tutorial explains the breakdown of Oracle Logical Storage Structures.
Views: 30156 HandsonERP
dba interview questions & answer in oracle | Ten Minute Code
 
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Top Oracle DBA Interview Questions & Answer 1. Oracle DBA Characteristics Criteria Result Main storage structures Logical and Physical Architecture Grid architecture ACID Compliance Fully compliant Data stored as Data blocks, extents, segments and table spaces 2. What is Oracle? Oracle is a company. Oracle is also a database server, which manages data in a very structured way. It allows users to store and retrieve related data in a multi user environment so that many users can concurrently access the same data. All this is accomplished while delivering high performance. A database server also prevents unauthorized access and provides efficient solutions for failure recovery. A standby database is a database replica created by taking a backup of a primary database. 3. What is a Oracle Database? Oracle provides software to create and manage the Oracle database. The database consists of physical and logical structures in which system, user, and control information is stored. The software that manages the database is called the Oracle database server. Collectively, the software that runs oracle and the physical database are called the Oracle database system. A database buffer cache stores the data in memory for quicker access. The redo logs track and store all the changes made to the database. A Data Guard ensures data protection and high availability of data and control file records the physical structure of the database. Click on the above link to read more and to become a Oracle DBA. 4. What are the roles of DBA? DBA has the authority to create new users, remove existing users or modify any of the environment variables or privileges assigned to other users. • Manage database storage • Administer users and security • Manage schema objects • Monitor and manage database performance • Perform backup and recovery • Schedule and automate jobs 5. What are different Oracle database objects? • TABLES • VIEWS • INDEXES • SYNONYMS • SEQUENCES • TABLESPACES 6. What are the benefits of ORDBMS? The objects as such can be stored in the database. The language of the DBMS can be integrated with an object- oriented programming language. The language may even be exactly the same as that used in the application, which does not force the programmer to have two representations of his objects. 7. What is an Oracle index? An index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table. 8. What are the Common Oracle DBA Tasks? As an Oracle DBA, you can expect to be involved in the following tasks: • Installing Oracle software • Creating Oracle databases • Performing upgrades of the database and software to new release levels • Starting up and shutting down the database • Managing the database’s storage structures • Managing users and security • Managing schema objects, such as tables, indexes, and views • Making database backups and performing recovery when necessary • Proactively monitoring the database’s health and taking preventive or corrective action as required • Monitoring and tuning performance In a small to midsize database environment, you might be the sole person performing these tasks. In large enterprise environments, the job is often divided among several DBAs, each with their own area of specialty, such as the database security administrator or database tuning expert. 9. List out the Tools for Administering the Database? The following are some of the products, tools, and utilities you can use in achieving your goals as a database administrator. -Oracle Universal Installer (OUI) The Oracle Universal Installer installs your Oracle software and options. It can automatically launch the Database Configuration Assistant to install a database. -Database Configuration Assistant (DBCA) The Database Configuration Assistant creates a database from templates that are Oracle supplied, or you can create your own. It enables you to copy a preconfigured seed database, thus saving the time and effort of customizing and generating a database from scratch. -Database Upgrade Assistant This tool guides you through the upgrade of your existing database to a new Oracle release. -Oracle Net Manager This tool guides you through your Oracle Net network configuration. -Oracle Enterprise Manager The primary tool for managing your database is Oracle Enterprise Manager, a web-based interface. After you have installed the Oracle software, created or upgraded a database, and configured the network, you can use Oracle Enterprise Manager as the single interface for managing your database. In addition, Oracle Enterprise Manager also provides an interface for performance advisors and an interface for Oracle utilities such as SQL*Loader and Recovery Manager.
Views: 433 abdulquium
What are the different types of Tablespaces in an Oracle Database - DBArch Video 23
 
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In this video you will understand about the different types of tablespaces and their use/purpose. . Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 13777 Ramkumar Swaminathan
Oracle DBA - Temporary Segment
 
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http://oracledbazerotopro.com This tutorial explains temporary segments.
Views: 10695 HandsonERP
Reorganizing Tables in Oracle
 
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The clip explains why reorganizing of tables may or may not be required and how to do it. Text version is here: https://uhesse.com/2010/08/23/reorganizing-tables-in-oracle-is-it-worth-the-effort/
SCPT 47: Oracle Storage Parameters: PCTFREE and PCTUSED
 
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Oracle DBA Tutorials For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=6 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 22720 Oresoft LWC
5 Tablespace Extent Block Management
 
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Oracle DBA Block Management in tablespace.
Views: 2387 NewTechnology
WHAT IS AN UNDO TABLESPACE - Oracle database Administration
 
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Learn how easy it is to make $100k and above by becoming an Oracle Database Administrator. Website: https://newayitsolutions.com Subscribe: https://newayitsolutions.com/page Enroll: https://newayitsolutions.com/enroll Youtube: newayitsolutions ------------------------------------------------------------------------------------------------------------------------------------------------------------- Follow on Facebook: https://www.facebook.com/newayitsolutions/ Follow on Twitter: https://twitter.com/Theoracledbaguy Follow on Instagram: https://www.instagram.com/oracledbatrainer/ Financing Available: https://newayitsolutions.com/loan-application School Locations: Atlanta, Maryland, Virginia ------------------------------------------------------------------------------------------------------------------------------------------------------------- Office Contact: 1-866-569-0205 Mobile Contact: 240-244-9935
Views: 4012 NewayITSolutions LLC
File Operations - 02 Storage of tables - tablespaces, segments, files, extents, blocks
 
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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: 1820 itversity
Oracle Administration Tutorial - Understanding Tablespaces and Datafiles (Theory).mp4
 
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Oracle Administration Tutorial - Understanding Tablespaces and Datafiles
Views: 46508 maurice ford
Extent Management
 
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Extent Management With storage parameter
Views: 512 Sainora Annanagar
Oracle DBA - Segment Types
 
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http://oracledbazerotopro.com This tutorial talks about segment types.
Views: 10951 HandsonERP
Oracle 10g Physical & Logical Structure
 
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Oracle 10g Physical & Logical Structure. Tablespaces, segments, extents and datablocks concepts
Views: 1831 ITLecture
Oracle DBA - Index Segment
 
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http://oracledbazerotopro.com This tutorial explains index segment.
Views: 20510 HandsonERP
Oracle DBA - Tablespaces
 
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http://oracledbazerotopro.com This tutorial explains Oracle Tablespaces.
Views: 82406 HandsonERP
قواعد البيانات 10 (Oracle Datafiles (Oracle DBA 11g Tutorial
 
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Oracle DBA 11g Tutorial Oracle Data Files Overview of Tablespaces and Overview of Datafiles database block,extents,segments
Views: 178 Ahmed Ybat
Oracle Database Instance Memory Structures - DBArch Video 4
 
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Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 30993 Ramkumar Swaminathan
SEGMENT SPACE MANAGEMENT
 
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SEGMENT SPACE MANAGEMENT/SPACE PARAMETER
Views: 697 Sainora Annanagar
Oracle Architecture
 
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This video describes the best architecture of the oracle after trying more than times to Oracle structure I decided to produce an animated video let's start first with the database structure on the left side you have the client here on the right side you have to serve a two-year the server side is divided in three main structures to memory the logical structure and the physical structure so let's use SQL Plus application to provide you every step up a transaction will be using Scott sample schema it is important to note that the whole string is an alias and not a database name district will be compared to this alias inside of a file called pianist named doc or this file is similar to a DNS and with up pain all the necessary detail to reach a database server locally a user process will be allocated and will validate the connection through a listener the listener will be in charge to allocate a server process the user processes da link to the server process let's now execute our first transaction for this example we will execute an update first to state that will be validated we call this step the parsing this server process sense back to confirmation of the parsing that statement with be written into their share pool and the redo log buffer an execution plan will also be created it to the fair share Paul that database book they choose fought the transaction will be read and copy into the database buffer cache only that feel implicated in that transaction will be held it to a - segment till the transaction is completed we call those copies the before image a copy of this block will be duplicated with the updated feel this copy is called me after image a confirmation will be sent to to use a process the commit statement will complete the transaction and will be written into to redo log buffer to commit statement triggers the log writer process and we'll send all statement for the current transaction into the redo log file the before image into undo segment could be then deleted went that threshold up to undo retention parameters reach alaskan from Asian will be sent to the user process went to current law kiss Paul it generates a switch lock triggering at the same time the archiver process and to log sequence number the archiver will generate and archive the file with the content of the current loc a switch up with them trigger a checkpoint process that will incriminate the checkpoint number by applying this last number into each data file header the checkpoint process with finally trigger the database writer process enright the last image from that database buffer cache into thirty people
Views: 21433 Ezylearning
pct free, oracle storage,dba videos from cpisolution.com
 
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understand pct free...what is pct used etc...used in dictionary managed tabelsapce and when segment management is manual..in locally managed tablespace.. oracle dba block and storage
How to Shrink table in Oracle..
 
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this video will help how to reclaim space from the table.
Views: 1928 oracdb
Oracle Tablespace Management
 
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How to Create and Manage tablespace watch this video
Views: 5302 COMBINATIONS FOR ALL
Oracle DBA - Logical Database Structure
 
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http://oracledbazerotopro.com This tutorial explains Logical Database Structure.
Views: 47121 HandsonERP
Pack Rows Tightly setting PCTFREE correctly - With Demo - DBPerf Video 14
 
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In this video you will understanding about setting PCTFREE correctly and its impact in I/O and Memory / SGA utilization. At the end there is a demo to show you the same. Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 1753 Ramkumar Swaminathan
oracle performance tuning 1
 
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oracle performance tuning
Views: 45551 kshptank
Oracle Database and Instance Components - DBArch Video 3
 
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In this video you will learn about the Relationship between and Oracle Instance and an Oracle Database. You will know about the various components of an Instance ( SGA and Background Processes) and the various files of the Database and how they interact. Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 38735 Ramkumar Swaminathan
Simplified DBA-014- Database Architecture Physical and Logical   Explained
 
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A database storage structure could be divided into logical and physical structure. Physical structure consists of files on physical disks while logical structure resides in the database. Both can be managed separately. Each database is logically divided into two or more tablespaces. One or more data files are explicitly created for each tablespace to physically store the data. A database is divided into logical storage units called tablespaces, which group related logical structures or datafiles together. For example, tablespaces commonly group all of an application’s segments to simplify some administrative operations. At the finest level of granularity, an Oracle database’s data is stored in data blocks. One data block corresponds to a specific number of bytes of physical space on the disk. A data block size is specified for each tablespace when it is created. A database uses and allocates free database space in Oracle data blocks. When you create a table, a segment is created with the same name in the tablespace. This segment has one or more Extents of equal size. Each Extent has Oracle Data Blocks as per tablespace definition. A data block could be of size 8K, 16K, 32K, 64K etc.
How to find block sizes of all Oracle Database files
 
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Block size of control files and redo log files are not same as default block size of your oracle database. Understand the level of control we got to alter these block sizes from one of my real time activity. Many more interesting blogs at : www.orskl.com/blog Looking for Oracle DBA training: www.orskl.com/training WhatsApp: +919951696808
Views: 3380 OrSkl Academy
Shrink Space
 
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#Oracle #ShrinkSpace
Views: 1927 Hemant K Chitale
Oracle Database tablespace,  Datafile and control files
 
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Oracle tablespace are logical containers of datafiles. Datafiles are physical files which contains data stored in binary format. Control file contains information about the database and the datafile location as well as checkpoint information
Views: 201 joey de jesus
Oracle Database Backup and Recovery Introduction - Backup&Reco Video 1
 
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In this video you will get introduced to the Backup and Recovery options available with an Oracle Database. Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 13962 Ramkumar Swaminathan
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: 7263 BhagyaRaj Katta
How to create and managed tablespace in oracle
 
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How to create and managed tablespace in oracle step by setp
Views: 139 database exert
Chained rows? Migrated rows?
 
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Understanding the basics of what happens when rows are just too damn big. blog: https://connor-mcdonald.com Highlights from the June DBA Office Hours session. Subscribe as new tech videos come every week!
Views: 683 Connor McDonald

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