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Locking in Oracle | Oracle SQL Tutorial Videos | Mr.Vijay Kumar
 
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Locking in Oracle | Oracle SQL Tutorial Videos | Mr.Vijay Kumar ** For Online Training Registration: https://goo.gl/r6kJbB ► Call: +91-8179191999 💡 Visit Our Website for Classroom Training: https://nareshit.in/oracle-training/ 💡 For Online Training: https://nareshit.com/oracle-online-training/ #Oracle #Training #CourseVideos -------------------------- 💡 About NareshIT: "Naresh IT is having 14+ years of experience in software training industry and the best Software Training Institute for online training, classroom training, weekend training, corporate training of Hadoop, Salesforce, AWS, DevOps, Spark, Data Science, Python, Tableau, RPA , Java, C#.NET, ASP.NET, Oracle, Testing Tools, Silver light, Linq, SQL Server, Selenium, Android, iPhone, C Language, C++, PHP and Digital Marketing in USA, Hyderabad, Chennai and Vijayawada, Bangalore India which provides online training across all the locations -------------------------- 💡 Our Online Training Features: 🎈 Training with Real-Time Experts 🎈 Industry Specific Scenario’s 🎈 Flexible Timings 🎈 Soft Copy of Material 🎈 Share Videos of each and every session. -------------------------- 💡 Please write back to us at 📧 [email protected]/ 📧 [email protected] or Call us at the USA: ☎+1404-232-9879 or India: ☎ +918179191999 -------------------------- 💡 Check The Below Links ► For Course Reg: https://goo.gl/r6kJbB ► Subscribe to Our Channel: https://goo.gl/q9ozyG ► Circle us on G+: https://plus.google.com/+NareshIT ► Like us on Facebook: https://www.facebook.com/NareshIT ► Follow us on Twitter: https://twitter.com/nareshitek ► Follow us on Linkedin: https://goo.gl/CRBZ5F ► Follow us on Instagram: https://goo.gl/3UXYK3
Views: 24721 Naresh i Technologies
Oracle - Locking - Beginner
 
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Oracle - Locking - Beginner
Views: 8689 Chris Ostrowski
Differences between Shared and Exclusive Lock in oracle database
 
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Hello friends in this video we learn how the lock occur in database automatically when multiple user modified the same transaction in their session. #SharedandExclusiveLock Oracle database Unbeatable,Unbreakable Platform..
Views: 10754 Oracle World
01 Oracle database Table lock
 
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Purpose Use the LOCK TABLE statement to lock one or more tables, table partitions, or table subpartitions in a specified mode. This lock manually overrides automatic locking and permits or denies access to a table or view by other users for the duration of your operation. Some forms of locks can be placed on the same table at the same time. Other locks allow only one lock for a table. A locked table remains locked until you either commit your transaction or roll it back, either entirely or to a savepoint before you locked the table. A lock never prevents other users from querying the table. A query never places a lock on a table. Readers never block writers and writers never block readers. See Also: Oracle Database Concepts for a complete description of the interaction of lock modes COMMIT ROLLBACK SAVEPOINT Prerequisites The table or view must be in your own schema or you must have the LOCK ANY TABLE system privilege, or you must have any object privilege on the table or view. ROW SHARE ROW SHARE permits concurrent access to the locked table but prohibits users from locking the entire table for exclusive access. ROW SHARE is synonymous with SHARE UPDATE, which is included for compatibility with earlier versions of Oracle Database. ROW EXCLUSIVE ROW EXCLUSIVE is the same as ROW SHARE, but it also prohibits locking in SHARE mode. ROW EXCLUSIVE locks are automatically obtained when updating, inserting, or deleting. SHARE UPDATE See ROW SHARE. SHARE SHARE permits concurrent queries but prohibits updates to the locked table. SHARE ROW EXCLUSIVE SHARE ROW EXCLUSIVE is used to look at a whole table and to allow others to look at rows in the table but to prohibit others from locking the table in SHARE mode or from updating rows. EXCLUSIVE EXCLUSIVE permits queries on the locked table but prohibits any other activity on it. NOWAIT Specify NOWAIT if you want the database to return control to you immediately if the specified table, partition, or table subpartition is already locked by another user. In this case, the database returns a message indicating that the table, partition, or subpartition is already locked by another user. WAIT Use the WAIT clause to indicate that the LOCK TABLE statement should wait up to the specified number of seconds to acquire a DML lock. There is no limit on the value of integer. If you specify neither NOWAIT nor WAIT, then the database waits indefinitely until the table is available, locks it, and returns control to you. When the database is executing DDL statements concurrently with DML statements, a timeout or deadlock can sometimes result. The database detects such timeouts and deadlocks and returns an error.
Views: 932 Md Arshad
Lock and Unlock table statistics in Oracle Database
 
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Lock and Unlock table statistics in Oracle Database
oracle world - Row Level Lock in Oracle database
 
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Hello friends in this video we learn how the lock occur in database automatically when multiple user modified the same transaction in their session. #RowLevelLock Oracle database Unbeatable,Unbreakable Platform..
Views: 7659 Oracle World
02 Shared Lock & Exclusive Lock In oracle database table lock
 
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Purpose Use the LOCK TABLE statement to lock one or more tables, table partitions, or table subpartitions in a specified mode. This lock manually overrides automatic locking and permits or denies access to a table or view by other users for the duration of your operation. Some forms of locks can be placed on the same table at the same time. Other locks allow only one lock for a table. A locked table remains locked until you either commit your transaction or roll it back, either entirely or to a savepoint before you locked the table. A lock never prevents other users from querying the table. A query never places a lock on a table. Readers never block writers and writers never block readers. See Also: Oracle Database Concepts for a complete description of the interaction of lock modes COMMIT ROLLBACK SAVEPOINT Prerequisites The table or view must be in your own schema or you must have the LOCK ANY TABLE system privilege, or you must have any object privilege on the table or view. ROW SHARE ROW SHARE permits concurrent access to the locked table but prohibits users from locking the entire table for exclusive access. ROW SHARE is synonymous with SHARE UPDATE, which is included for compatibility with earlier versions of Oracle Database. ROW EXCLUSIVE ROW EXCLUSIVE is the same as ROW SHARE, but it also prohibits locking in SHARE mode. ROW EXCLUSIVE locks are automatically obtained when updating, inserting, or deleting. SHARE UPDATE See ROW SHARE. SHARE SHARE permits concurrent queries but prohibits updates to the locked table. SHARE ROW EXCLUSIVE SHARE ROW EXCLUSIVE is used to look at a whole table and to allow others to look at rows in the table but to prohibit others from locking the table in SHARE mode or from updating rows. EXCLUSIVE EXCLUSIVE permits queries on the locked table but prohibits any other activity on it. NOWAIT Specify NOWAIT if you want the database to return control to you immediately if the specified table, partition, or table subpartition is already locked by another user. In this case, the database returns a message indicating that the table, partition, or subpartition is already locked by another user. WAIT Use the WAIT clause to indicate that the LOCK TABLE statement should wait up to the specified number of seconds to acquire a DML lock. There is no limit on the value of integer. If you specify neither NOWAIT nor WAIT, then the database waits indefinitely until the table is available, locks it, and returns control to you. When the database is executing DDL statements concurrently with DML statements, a timeout or deadlock can sometimes result. The database detects such timeouts and deadlocks and returns an error.
Views: 1000 Md Arshad
SQL tutorial 41: How to UNLOCK USER in oracle Database
 
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SQL tutorial on How to unlock user or schema in oracle database or how to unlock hr account/user/schema in oracle database using alter user SQL command. you can use the steps to change the password of any user in oracle database explained in detail. Celebrating 1000 subscribers. Thanks a lot guys for all your love and support. ------------------------------------------------------------------------- Blog Link: http://bit.ly/unlock-user-in-oracle -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the first one to see my ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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/ 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: 41431 Manish Sharma
دورة ORACLE الحلقة 11 # How to Lock and Expire Account .
 
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دورة ORACLE الحلقة 11 # How to Lock and Expire Account . دورة ORACLE الحلقة 10 # Revoke System Privilege From a Specific User . دورة ORACLE الحلقة 09 # Revoke Object Privileges From a User . دورة ORACLE الحلقة 08 # How to Grant Object Privileges to User . دورة ORACLE الحلقة 07 # Create table using SQL*PLUS . دورة ORACLE الحلقة 06 # What is a schema . دورة ORACLE الحلقة 05 # What are user Privileges . دورة ORACLE الحلقة 04 # How to create User Using SQL*PLUS . دورة ORACLE الحلقة 03 # How to connect to SQL*plus . دورة ORACLE الحلقة 02 # Type of users in oracle . دورة ORACLE الحلقة 01 # Types of oracle clients . نقدم لكم في هده الدورة مجموعة دروس ORACLE الشاملة من البداية للإحتراف و حصريا باللغة العربية .حولنا التطرق إلى مجموعة من النقاط المهمة و كذلك المكملة لإنتاج دورة شاملة و بطريقة منظمة كفيلة بإكساب المتعلم خبرة عملية ل تقديم شهادة ORACLE DATA BASE ADMINSTRATIONS التي سوف نتطرق إليها فيما بع شكرا لكم لا تنسو الإشتراك في القناة والتفاعل مع المحتوى و شكراا لكم لتواصل عبر البريد : [email protected]
Views: 0 MADIX SWING
How to Create ROW LEVEL LOCK  2 Of 2
 
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Hi... Friend In this video we learn how to create ROW LEVEL LOCKING IN ORACLE DATABASE 11g
Views: 160 PGT POINT
Deadlock? in oracle database
 
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Hello friends in this video we learn how the lock occur in database automatically when multiple user modified the same transaction in their session. #Deadlock Oracle database Unbeatable,Unbreakable Platform..
Views: 8427 Oracle World
Exclusive lock vs Shared Lock (Explained by Example)
 
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In this episode we discuss the differences between exclusive lock and shared lock (also known as two phase locking) with an example. We define the both and list their advantages and disadvantages. Exclusive and shared lock are very important artifacts in DBMS systems. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ⇨ [x] Proxy vs Reverse Proxy  https://goo.gl/ZYFQAi ⇨ [x] Stateful vs Stateless Applications  https://goo.gl/Fubfi6 ⇨ [x] Virtual Machines vs Containers https://goo.gl/fiECVb ⇨ [x] Database ACID - Atomicity https://goo.gl/ER9PPj ⇨ [x] Database ACID - Consistency https://goo.gl/VpLAeN ⇨ [x] Database ACID - Dirty read https://goo.gl/pkB528 ⇨ [x] Database ACID - Phantom read https://goo.gl/rnyzuA ⇨ [x] Database ACID - Non repeatable read https://goo.gl/8kgEjN ⇨ [x] Database ACID - Read uncommitted https://goo.gl/4igWUq ⇨ [x] Database ACID - Read committed https://goo.gl/twgAKL ⇨ [x] Database ACID - Repeatable read https://goo.gl/vDcP6M ⇨ [x] HOW I GREW MY YOUTUBE SUBS TO 2000 WITH A $25 MIC https://goo.gl/cM5VFx ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Views: 1294 IGeometry
0608 How to Resolve Lock Conflicts
 
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ORACLE
Views: 102 oracle ocm
Oracle DBA - Manage Users, Roles & Privileges | User Management
 
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Thanks for Watching please Like, Subscribe and Share... BoxCut Media.
Views: 30297 BoxCut Media
LOCKING DATABASE (ORACLE)
 
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Demo Locking Tugas Sistem Manajemen Basisdata Desy Fajar Rahayu 13523087 Mia Puspa Pertiwi 13523096 Annisa Dian Pertiwi 13523105 Ardisa Benita Yolanda 13523190
Views: 73 Ardisa Benita
PL/SQL: Locks
 
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In this tutorial, you'll learn the types of locks & how locks occurs while executing a query.
Views: 8337 radhikaravikumar
03 Dead Lock in oracle database
 
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DML Locks DML locks or data locks guarantee the integrity of data being accessed concurrently by multiple users. DML locks help to prevent damage caused by interference from simultaneous conflicting DML or DDL operations. By default, DML statements acquire both table-level locks and row-level locks. The reference for each type of lock or lock mode is the abbreviation used in the Locks Monitor from Oracle Enterprise Manager (OEM). For example, OEM might display TM for any table lock within Oracle rather than show an indicator for the mode of table lock (RS or SRX). Row Locks (TX) Row-level locks serve a primary function to prevent multiple transactions from modifying the same row. Whenever a transaction needs to modify a row, a row lock is acquired by Oracle. There is no hard limit on the exact number of row locks held by a statement or transaction. Also, unlike other database platforms, Oracle will never escalate a lock from the row level to a coarser granular level. This row locking ability provides the DBA with the finest granular level of locking possible and, as such, provides the best possible data concurrency and performance for transactions. The mixing of multiple concurrency levels of control and row level locking means that users face contention for data only whenever the same rows are accessed at the same time. Furthermore, readers of data will never have to wait for writers of the same data rows. Writers of data are not required to wait for readers of these same data rows except in the case of when a SELECT... FOR UPDATE is used. Writers will only wait on other writers if they try to update the same rows at the same point in time. In a few special cases, readers of data may need to wait for writers of the same data. For example, concerning certain unique issues with pending transactions in distributed database environments with Oracle. Transactions will acquire exclusive row locks for individual rows that are using modified INSERT, UPDATE, and DELETE statements and also for the SELECT with the FOR UPDATE clause. Modified rows are always locked in exclusive mode with Oracle so that other transactions do not modify the row until the transaction which holds the lock issues a commit or is rolled back. In the event that the Oracle database transaction does fail to complete successfully due to an instance failure, then Oracle database block level recovery will make a row available before the entire transaction is recovered. The Oracle database provides the mechanism by which row locks acquire automatically for the DML statements mentioned above. Whenever a transaction obtains row locks for a row, it also acquires a table lock for the corresponding table. Table locks prevent conflicts with DDL operations that would cause an override of data changes in the current transaction. Table Locks (TM) What are table locks in Oracle? Table locks perform concurrency control for simultaneous DDL operations so that a table is not dropped in the middle of a DML operation, for example. When Oracle issues a DDL or DML statement on a table, a table lock is then acquired. As a rule, table locks do not affect concurrency of DML operations. Locks can be acquired at both the table and sub-partition level with partitioned tables in Oracle. A transaction acquires a table lock when a table is modified in the following DML statements: INSERT, UPDATE, DELETE, SELECT with the FOR UPDATE clause, and LOCK TABLE. These DML operations require table locks for two purposes: to reserve DML access to the table on behalf of a transaction and to prevent DDL operations that would conflict with the transaction. Any table lock prevents the acquisition of an exclusive DDL lock on the same table, and thereby prevents DDL operations that require such locks. For example, a table cannot be altered or dropped if an uncommitted transaction holds a table lock for it. A table lock can be held in any of several modes: row share (RS), row exclusive (RX), share (S), share row exclusive (SRX), and exclusive (X). The restrictiveness of a table lock's mode determines the modes in which other table locks on the same table can be obtained and held.
Views: 275 Md Arshad
Oracle DBA - Solve Long Running Query & TX Row Lock Contention | Performance Tuning
 
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How to Solve Row Lock Contention in Oracle Database - Performance Tuning - Oracle DBA Solve Row Lock Contention & Long Running Query in Oracle Database - Performance Tuning Oracle DBA - Performance Tuning Row Lock Contention Please Like, Comment, Subscribe and Share... Boxcut Media.
Views: 9313 BoxCut Media
How to identify and resolve database locks in Spotlight on Oracle
 
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https://www.quest.com/Spotlight-on-Oracle This video shows how to identify and resolve database locks in Spotlight on Oracle.
Views: 43 Quest
Oracle Tutorial ||online training|| Oracle|Adv Sql | Table Locks Part - 2 by basha
 
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DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS ,ADF,INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
Locks   Blocks   Deadlocks
 
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Understanding Locks, Blocks and dead locks in oracle database.
Views: 4166 OrSkl Academy
Oracle username and password and Account unlocking
 
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all education purpose videos
Views: 290407 Chandra Shekhar Reddy
Oracle Database Lock Mode
 
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Tipe – tipe lock yang terdapat di oracle database
Views: 218 Muhammad Umar
SQL: ACID (Transaction properties)
 
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In this tutorial, you'll learn what is ACID PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 3317 radhikaravikumar
Oracle Locks and Lock Trees
 
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Rows Locks and sessions waiting in a "tree order" on Row Locks in Oracle
Views: 248 Hemant K Chitale
What is enq TX row lock contention
 
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What is enq TX row lock contention Find More details Here: http://oracletech2u.blogspot.com/2014/03/what-is-enq-tx-row-lock-contention.html
Views: 239 oratech ahmed
how to unlock user in oracle database
 
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how to lock or unlock user in the data base oracle using script by sqlplus good luck
Views: 61 AbuBakr Alshujary
Oracle EBS AR Auto Lockbox
 
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A brief overview of AutoLockbox processing in EBS R11i and R12. For presentation used in this video, please visit: https://drive.google.com/drive/folders/0B6EDqGZwjejmLWZzNUNoN2JDZVk
Views: 19817 anilkumar ghorakavi
How to Easily Identifying Oracle Locks
 
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How to Easily Identifying Oracle Locks. For more information, please go to: http://www.embarcadero.com/products/dbartisan-xe
Views: 2121 DBPowerStudio
SCPT 40 : Types of DDL Locks in Oracle
 
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The two basic types of locks are DML (table) locks, and DDL (dictionary) locks. A DDL lock protects the definition of a schema object while the object is referenced in a DDL operation. Oracle automatically acquires a DDL lock to prevent other DDL operations from referencing or altering the same object.
How to Release a lock on Table in SQL Server
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg By the Way to Terminate a Session is used to Release a Lock in a Table. In this Video we used KILL Statement to Release a Lock. KILL can be used to terminate a normal connection, which internally terminates the transactions that are associated with the specified session ID. So, Transaction automatically gets Rolled back and Lock will be Released.
Views: 1241 IT Port
Simplified DBA-019-Data Concurrency and Locks
 
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DATA CONCURRENCY More than one user connections ( session ) can access same data. For example user1 and user2 can view same employee information at the same time. But not two users can modify same data in one time. This is maintained by oracle lock mechanism. Before the database allows a session to modify data, the session must first lock the data that is being modified. A lock gives the session exclusive control over the data so that no other transaction can modify the locked data until the lock is released. Transactions can lock individual rows of data, multiple rows, or even entire tables. Oracle Database supports both manual and automatic locking. Automatically acquired locks always choose the lowest possible level of locking to minimize potential conflicts with other transactions. Demo: User1 is modifying an employee. User1 session will acquire a lock on the row. Same time user2 is trying to modify same employee. Since User1 has acquired lock, user2 has to wait until user1 releases the lock. Manual locking is possible. A user can place a lock manually as follows: LOCK TABLE mytable1 IN EXCLUSIVE MODE; With the preceding statement, any other transaction that tries to update a row in the locked table must wait until the transaction that issued the lock request completes. EXCLUSIVE is the strictest lock mode. The following are the other lock modes: ROW SHARE: Permits concurrent access to the locked table but prohibits sessions from locking the entire table for exclusive access ROW EXCLUSIVE: Is the same as ROW SHARE, but also prohibits locking in SHARE mode. The ROW EXCLUSIVE locks are automatically obtained when updating, inserting, or deleting data. ROW EXCLUSIVE locks allow multiple readers and one writer. SHARE: Permits concurrent queries but prohibits updates to the locked table. A SHARE lock is required (and automatically requested) to create an index on a table. However, online index creation requires a ROW SHARE lock that is used when building the index.
How to Unlock or  Lock Oracle Sample Schema User Account after Installation
 
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How to easy Unlock Oracle Sample Schema User Account after installation. For more interesting vids subscribe @ http://www.youtube.com/subscription_center?add_user=rctvids
Views: 2893 RCT vids
Deadlock transaction in a database with one table - Oracle
 
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No sound was recorded. Oracle 12.1. For PostgreSQL see https://youtu.be/En8EFv90yCc To avoid inconsistency, type "SET AUTOCOMMIT OFF" and "WHENEVER SQLERROR EXIT ROLLBACK" at the top. Otherwise only a part of the transaction will be commited. === A select * from t; update t set n=n+1 where i=1; B update t set n=n+1 where i=2; update t set n=n+1 where i=1; A update t set n=n+1 where i=2; B commit; A commit; select * from t;
Views: 42 chlordk
Lock Escalation in SQL Server
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Lock Escalation is the Converting Process of Many fine-grain locks (Row Level) into fewer coarse-grain locks (Table Level, Page Level), reducing system overhead while increasing the probability of Concurrency contention Every lock needs some bytes of Memory. When SQL is going to change a lot of rows, Engine will acquire lot of Row level locks and it takes huge memory for it and having multiple queries locking different parts of the table creates the possibility for deadlock if one process is waiting on another. To avoid this SQL Server implements Lock Escalation
Views: 1082 IT Port
Oracle Tutorial || Oracle|Sql Diff Type of Tables Part-2 by basha
 
35:55
DURGASOFT is INDIA's No.1 Software Training Center offers online training on various technologies like JAVA, .NET , ANDROID,HADOOP,TESTING TOOLS ,ADF,INFORMATICA,TABLEAU,IPHONE,OBIEE,ANJULAR JS, SAP... courses from Hyderabad & Bangalore -India with Real Time Experts. Mail us your requirements to [email protected] so that our Supporting Team will arrange Demo Sessions. Ph:Call +91-8885252627,+91-7207212428,+91-7207212427,+91-8096969696. http://durgasoft.com http://durgasoftonlinetraining.com https://www.facebook.com/durgasoftware http://durgajobs.com https://www.facebook.com/durgajobsinfo......
How To Create A Table In Oracle 11g Enterprise Edition
 
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User-name : scott password : tiger Like - Subscribe - Comment - Share And Let Us Know Anything Related SQL And We Will Make A Video For The Same...
Views: 357 All In One
Oracle DBA Justin - How to grant a system privilege to a user in an Oracle database
 
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How to grant a system privilege to a user in an Oracle database
Views: 23102 jbleistein11
How to Release a lock on Table in SQL Server Tamil
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg By the Way to Terminate a Session is used to Release a Lock in a Table. In this Video we used KILL Statement to Release a Lock. KILL can be used to terminate a normal connection, which internally terminates the transactions that are associated with the specified session ID. So, Transaction automatically gets Rolled back and Lock will be Released. Explained in Tamil
Views: 197 IT Port
42 Oracle 11g Tutorials Types of Tables (By MrMerchant Co.)
 
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Oracle 11g Complete Tutorials - PART42 Don't forget to subscribe to my channel. (source: Coding Arena).
Views: 14 MrMerchant Co.
PL/SQL: Mutating Triggers Part-1
 
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In this tutorial, you'll learn... PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 25339 radhikaravikumar
PL/SQL tutorial 44 : Introduction to PL/SQL Packages in Oracle Database By Manish Sharma
 
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RebellionRider.com present PL/SQL tutorial on Introduction to PL/SQL Packages in Oracle Database By Manish Sharma ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/packages-intro ------------------------------------------------------------------------- ►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___ https://www.facebook.com/RebellionRider.official/ You can also Email me at 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: 36129 Manish Sharma
Oracle 11g Lock Monitoring with Read Committed Transaction Isolation Level Brief Explanation
 
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Oracle 11g memiliki 2 jenis transaction isolation level yaitu Read Committed dan Serializable. Secara default transaction isolation pada Oracle adalah Read Committed, yaitu ketika sebuah session melakukan Insert/Update/Delete pada sebuah data dilanjutkan dengan commit maka session lain akan secara otomatis membaca data yang sama. Terdapat Row Level Lock (TX) dan Table Level Lock (TM). Video ini memberikan contoh jelas tentang transaksi yang terjadi ketika proses locking terjadi.
Views: 215 Boby Siswanto
A easy method to unlock any user in Oracle 10g, 11g
 
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Easy method to unlock any user account in Oracle database 10g and 11g. In this tutorial I have unlocked hr user account you can unlock any user account from following list: Anonymous CTXSYS SCOTT EXFSYS MDSYS OLAPSYS SYS SYSTEM click start and type sqlplus then type the user-name: sys / as sysdba then type the password that you have set during the installation of the oracle software type the following to unlock account alter user scott account unlock; type the following to set password for user account alter user scott idenfied by tiger; where tiger is your password Thanks for watching and subscribe for more. . . :)
Views: 6603 Abdul ReHmaN
25,06,2018 Table & lock line se jodi Print hogi...
 
08:09
Jabardast line se Aaj Dhamaka hoga.
Views: 3859 Sattamatka Mastermind