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DML Processing in an Oracle Database -  DBArch Video 8
 
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This video explains the steps involved in processing a DML statement in an Oracle Database Server. 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: 60013 Ramkumar Swaminathan
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: 8635 BoxCut Media
Oracle Locks Explained Part 1
 
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Oracle Locks explained. How to Kill a User session in oracle database- Neway IT Solutions
Views: 2241 NewayITSolutions LLC
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: 882 Md Arshad
Oracle Database Lock Mode
 
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Tipe – tipe lock yang terdapat di oracle database
Views: 211 Muhammad Umar
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: 268 Md Arshad
SQLPLUS: LineSize & PageSize
 
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In this tutorial, you'll learn how to set linesize and pagesize . 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: 19352 radhikaravikumar
Understanding Oracle Database Memory and what happens when a select statement is entered
 
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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: 3060 NewayITSolutions LLC
oracle in select
 
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oracle in select
Views: 463 Prakash Mishra
Oracle SQL - Stopping an Oracle Database - Lesson 10
 
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Learn Oracle SQL using this video series. In this video you will learn how to stop an Oracle Database.
Views: 3782 Sam Dhanasekaran
Locking and Unlocking Data in Oracle Financial Consolidation and Close Cloud
 
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This tutorial demonstrates how to lock and unlock data in Oracle Financial Consolidation and Close Cloud. You learn to select a point of view for locking, sort the Approval Unit list, and lock and unlock entities.
Oracle DBA - Manage Users, Roles & Privileges | User Management
 
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Thanks for Watching please Like, Subscribe and Share... BoxCut Media.
Views: 29378 BoxCut Media
Oracle Database Users / User Management (Simple)
 
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Create, Alter, Drop, Grant Rights, Default Tablespace, Temporary Tablespace, Quota Setup, View Users Information, Lock / Unlock user account select username,account_status,default_tablespace, temporary_tablespace,created from dba_users; create user myuser identified by myuser; alter user myuser quota unlimited on mytbs; alter user myuser quota 100m on mytbs; alter user temporary tablespace temp; alter user myuser default tablespace mytbs; alter user myuser accout unlock; alter user myuser account lock; alter user myuser password expire; alter user myuser identified by youuser; create user myuser identified by myuser default tablespace users temporary tablespace temp quota unlimited on users; grant create session, resource to myuser; grant create session, resource to myuser with grant option; drop user asif; drop user asif cascade;
Views: 41937 Abbasi Asif
Datafile Resize in Oracle
 
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Welcome Back to KSH Infotainment. Datafile Resize in Oracle. Activity done on Oracle 11g ASM DB. Used Queries: ============= set lines 200 pages 200 select df.tablespace_name "Tablespace", totalusedspace "Used MB", (df.totalspace - tu.totalusedspace) "Free MB", df.totalspace "Total MB", round(100 * ( (df.totalspace - tu.totalusedspace)/ df.totalspace)) "Pct. Free" from (select tablespace_name, round(sum(bytes) / 1048576) TotalSpace from dba_data_files group by tablespace_name) df, (select round(sum(bytes)/(1024*1024)) totalusedspace, tablespace_name from dba_segments group by tablespace_name) tu where df.tablespace_name = tu.tablespace_name order by 1; set linesize 200 set pagesize 2000 COLUMN tablespace_name format a10 COLUMN file_name format a45 COLUMN free% format a7 SELECT df.tablespace_name,SUBSTR (df.file_name, 1, 60) file_name, df.bytes / 1024 / 1024 allocated_mb, round(((df.bytes / 1024 / 1024) – NVL (SUM (dfs.bytes) / 1024 / 1024, 0)),1) used_mb, round(NVL (SUM (dfs.bytes) / 1024 / 1024, 0),2) free_space_mb FROM dba_data_files df, dba_free_space dfs WHERE df.FILE_ID = dfs.file_id(+) GROUP BY df.tablespace_name, dfs.file_id, df.file_id , df.bytes, df.file_NAME ORDER BY df.tablespace_name;
Views: 89 KSH Infotainment
Oracle Tutorial-Creating, Expire, Lock, Unlock, Profile User and Create a form of User Creations
 
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TrainerBD.com Offers the most affordable (BDT. 15,000/-) Oracle Training in Mirpur, Dhaka, Bangladesh. Learn Oracle, Be an Oracle Developer and/or Database Administrator. Click http://goo.gl/OYI9lF to learn Oracle. oracle 11g tutorial free download oracle sql tutorial oracle 10g tutorial oracle form builder tutorial oracle forms 10g tutorial oracle 10g tutorial for beginners oracle database 10g tutorial sql oracle oracle for beginners oracle 10g tutorial oracle tutorials for beginners oracle dba tutorial for beginners pdf oracle forms developer tutorial toad for oracle tutorial oracle fusion middleware tutorial oracle forms 6i tutorial oracle sql tutorial oracle 11g tutorial oracle tutorial pdf free download oracle dba tutorial for beginners oracle application express tutorial oracle tutorial for beginners oracle database tutorial oracle apex tutorial oracle sql tutorial sql tutorial oracle 11g tutorial oracle 10g tutorial oracle dba tutorial oracle tutorial for beginners Oracle Apex Tutorial Bangla Oracle Apex Tutorial Videos In Bangla Oracle Apex Training
Views: 184 TrainerBD .com
Select statement and deadlock in SQL Server
 
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SELECT statement can participate in a deadlock situation in Microsoft SQL Server. It seems unnatural. Shouldn't SELECT lock nothing? This video explains how SELECT query is executed and why a deadlock may occur.
Views: 441 DBA presents
Oracle Critical Patch Update - August 2018
 
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►Patch Update Unterstützung: https://pitss.com/de/kontaktformular/ Aufgrund von kritischer Sicherheitslücke: Oracle veröffentlicht Notfall-Patch im August 2018 Aufgrund einer ernsthaften Sicherheitslücke in mehreren Versionen von Oracle Database hat der Software-Hersteller ein außerplanmäßiges Critical Patch Update veröffentlicht. In einem Security Alert Advisory rät Oracle zu sofortigem Update, da die Sicherheitslücke einem Angreifer u.U. die komplette Systemübernahme aus der Ferne ermöglichen könnte. Betroffen sind die Database-Versionen 11.2.0.4 und 12.2.0.1 unter Windows, für die neue Patches bereit stehen. Für die Version 12.1.0.2 unter Windows sowie für sämtliche Linux-/Unix-Versionen wurden bereits im Juli entsprechende Patches durch Oracle zur Verfügung gestellt, wie wir hier berichteten. Sollten Sie beim Einspielen der aktuellen Critical Patch Updates Unterstützung benötigen, stehen wir Ihnen gerne zur Verfügung. Melden Sie sich dafür einfach telefonisch oder über unser Kontaktformular: https://pitss.com/de/kontaktformular/ _________________________________________________________________ This presentation contains images that were used under a Creative Commons License. Click here to see the full list of images and attributions: https://app.contentsamurai.com/cc/176686
Views: 56 Projekt Digital
Oracle Locks Part2  Killing a User Session
 
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Oracle Locks Part 2- Killing a User session- Neway IT Solutions
Difference between blocking and deadlocking
 
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deadlock vs blocking sql server In this video we will discuss the difference between blocking and deadlocking. This is one of the common SQL Server interview question. Let us understand the difference with an example. SQL Script to create the tables and populate them with test data Create table TableA ( Id int identity primary key, Name nvarchar(50) ) Go Insert into TableA values ('Mark') Go Create table TableB ( Id int identity primary key, Name nvarchar(50) ) Go Insert into TableB values ('Mary') Go Blocking : Occurs if a transaction tries to acquire an incompatible lock on a resource that another transaction has already locked. The blocked transaction remains blocked until the blocking transaction releases the lock. Example : Open 2 instances of SQL Server Management studio. From the first window execute Transaction 1 code and from the second window execute Transaction 2 code. Notice that Transaction 2 is blocked by Transaction 1. Transaction 2 is allowed to move forward only when Transaction 1 completes. --Transaction 1 Begin Tran Update TableA set Name='Mark Transaction 1' where Id = 1 Waitfor Delay '00:00:10' Commit Transaction --Transaction 2 Begin Tran Update TableA set Name='Mark Transaction 2' where Id = 1 Commit Transaction Deadlock : Occurs when two or more transactions have a resource locked, and each transaction requests a lock on the resource that another transaction has already locked. Neither of the transactions here can move forward, as each one is waiting for the other to release the lock. So in this case, SQL Server intervenes and ends the deadlock by cancelling one of the transactions, so the other transaction can move forward. Example : Open 2 instances of SQL Server Management studio. From the first window execute Transaction 1 code and from the second window execute Transaction 2 code. Notice that there is a deadlock between Transaction 1 and Transaction 2. -- Transaction 1 Begin Tran Update TableA Set Name = 'Mark Transaction 1' where Id = 1 -- From Transaction 2 window execute the first update statement Update TableB Set Name = 'Mary Transaction 1' where Id = 1 -- From Transaction 2 window execute the second update statement Commit Transaction -- Transaction 2 Begin Tran Update TableB Set Name = 'Mark Transaction 2' where Id = 1 -- From Transaction 1 window execute the second update statement Update TableA Set Name = 'Mary Transaction 2' where Id = 1 -- After a few seconds notice that one of the transactions complete -- successfully while the other transaction is made the deadlock victim Commit Transaction Link for all dot net and sql server video tutorial playlists https://www.youtube.com/user/kudvenkat/playlists?sort=dd&view=1 Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/difference-between-blocking-and.html
Views: 77102 kudvenkat
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: 34 chlordk
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: 959 Md Arshad
DDL, DML, DCL & TCL statements in SQL (Database basics)
 
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DDL, DML, DCL & TCL statements in SQL (Database basics) Check my blog on this: https://sqlwithmanoj.com/2009/02/10/what-are-ddl-dml-dcl-and-tcl-commands-difference-bw-them/ Check the whole "SQL Server Basics" series here: https://www.youtube.com/playlist?list=PLU9JMEzjCv14f3cWDhubPaddxRvx1reKR Check my SQL blog at: http://sqlwithmanoj.com/ Check my SQL FB Page at: https://www.facebook.com/sqlwithmanoj
Views: 324788 SQL with Manoj
Bulk collect and update in oracle plsql with example
 
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Bulk collect in oracle with limit clause example
Views: 1376 Oracle PL/SQL
Oracle Midlands #5: Boost Performance by Clustering Data - Martin Widlake
 
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This was the first talk of Oracle Midlands #5 (16th September 2014). Martin discusses the performance benefits possible when using IOTs, partitioning and some other techniques. The slides are available at https://www.dropbox.com/sh/g2tv2cvq20keeee/AABLCnOTEba-dtKnJTddCO8Sa This event was sponsored by Red Gate (http://www.red-gate.com/). See more events at http://OracleMidlands.com/ Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for fair use for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. "Fair Dealing" under UK Copyright, Designs and Patents Act 1988.
Views: 474 Oracle Midlands
USER MANAGEMENT HOW TO LOCK UNLOCK EXPIRE USER ACCOUNT IN ORACLE
 
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HOW TO LOCK_UNLOCK_EXPIRE USER ACCOUNT IN ORACLE ================================================= alter user naveen account lock; alter user naveen account lock password expire; alter user naveen account unlock; alter user naveen account unlock password noexpire; alter user naveen identified by newpassword; HOW TO RESET USER PASSWORD TO PREVIOUS EXPIRED PASSWORD (Admin related) ======================================================= select name,password from user$ where name='NAVEEN'; alter user naveen identified by values '&encrypted_values'; HOW TO CHANGE USER PASSWORD FROM USER SIDE ===================================== password
Views: 684 Praveen Biyyapu
Create new connection with new user in Oracle SQL Developer
 
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This video shows you how to create a new connection using a new user account (other than the system user account) in Oracle SQL Developer, so that you have a clean workspace without all the clutter of system tables. It is NOT a general introduction to using Oracle SQL Developer.
Views: 369968 Chitu Okoli
Oracle Tutorial||onlinetraining||pl/sql|| For Update Part-2 by Basha
 
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Oracle Architecture
 
04:11
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: 21445 Ezylearning
Oracle Architecture in less than 10 minutes
 
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CAPTIONS AVAILABLE - I assume that it's the "I like!" votes that keep this video at or near the top when you search on "oracle". Thank you to all. S. Faroult View on www.konagora.com where Youtube is blocked. Full transcript (with some screenshots) available for a small fee at http://stores.lulu.com/konagora/. A pretty reckless description of what happens when you start Oracle and when you execute a statement. If you're a developer, it could influence how you code. If you're a junior DBA, or would be junior DBA, I hope it will help you make sense of some parts of the "Concepts" manual.
Views: 535117 roughsealtd
Understanding RID Lock Part 1 in sql server
 
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RID LOcking Demo : CReate table Demo_lock(Id int,name varchar(1000)) select * from Demo_lock go insert into Demo_lock select 1,'Shrikant' go begin transaction insert into Demo_lock select 2,'Demo'
Views: 690 SqlIsEasy
Why is my Oracle Database Slow? The SQL Developer Performance Dashboard
 
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Oracle SQL Developer's product manager, Jeff Smith, takes you through the Instance Viewer: a performance dashboard for your Oracle Database. See expensive queries, wait event break downs, and more!
Views: 1967 Jeff Smith
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: 7267 BhagyaRaj Katta
SECOND CLASS OF ORACLE DATABASE SELECT STATEMENT BY SANDEEP KUMAR MAURYA 9451818227
 
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Hi Guys, This is Sandeep Kumar Maurya Today we are discussing about the select statement and about database........... I have Always been asked to share my code which I use in my video. Answering people’s questions is great, and the feeling you get when you solve a problem always felt good. The only problem I have is making tutorials is a little bit time consuming. It requires planning the subjects that need to be covered, recording the tutorial, editing the video, rendering it and finally uploading it on YouTube. So I need your help in Collecting All the codes at one place. I made a website Codebind.com for sharing my code and other programming stuff. But I alone can not do this. So Ask you guys to become contributor to this site. Just Share the code Which you learn by watching Programming Knowledge or You can simply share your Programming Knowledge with others. What is your Benefit? 1 - Together we can collect all the codes of All my videos and share it with others. 2 - Sharing Knowledge is the biggest learning. By sharing You can understand the concepts better. Bindas Programming..........
Views: 95 Bindas Programming
Oracle username and password and Account unlocking
 
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all education purpose videos
Views: 286778 Chandra Shekhar Reddy
SQL for Beginners (Part 9) : The UPDATE Statement
 
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The ninth part of a mini-series of videos showing the basics of SQL. In this episode we take a look at some of the variations on the UPDATE statement. For more information see: https://oracle-base.com/articles/misc/sql-for-beginners-the-update-statement Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Frits Hoogland : Blog: https://fritshoogland.wordpress.com/ Twitter: https://twitter.com/fritshoogland Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 737 ORACLE-BASE.com
Managing ASO Database Properties in Oracle Planning and Budgeting Cloud
 
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This video demonstrates how to update ASO databases in Calculation Manager with Oracle Planning and Budgeting Cloud. You learn how to view and/or update database, buffer, dimension, compression, and process-related information. You also see how to manage sessions, remove locks, start and stop applications and databases, clear data, track query data, compact outlines, merge data slices, perform aggregations, and select a compression dimension.
update.....(statement?)
 
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mmm an update?
Views: 119 mikey loop
Shared - Locks in SQL Server - Part 3 Tamil
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Shared (S) locks allow concurrent transactions to read (SELECT) a resource under pessimistic concurrency control. No other transactions can modify the data while shared (S) locks exist on the resource. Shared (S) locks on a resource are released as soon as the read operation completes, unless the transaction isolation level is set to repeatable read or higher, or a locking hint is used to retain the shared (S) locks for the duration of the transaction. Isolation Level - https://youtu.be/ESET4zuNLoM Script for Active_Locks Function --------------------------------------------------- Create Function Active_locks () returns table return select Top 10000000 case dtl.request_session_id when -2 then 'orphaned distributed transaction' when -3 then 'deferred recovery transaction' else dtl.request_session_id end as spid, db_name(dtl.resource_database_id) as databasename, so.name as lockedobjectname, dtl.resource_type as lockedresource, dtl.request_mode as locktype, es.login_name as loginname, es.host_name as hostname, case tst.is_user_transaction when 0 then 'system transaction' when 1 then 'user transaction' end as user_or_system_transaction, at.name as transactionname, dtl.request_status from sys.dm_tran_locks dtl join sys.partitions sp on sp.hobt_id = dtl.resource_associated_entity_id join sys.objects so on so.object_id = sp.object_id join sys.dm_exec_sessions es on es.session_id = dtl.request_session_id join sys.dm_tran_session_transactions tst on es.session_id = tst.session_id join sys.dm_tran_active_transactions at on tst.transaction_id = at.transaction_id join sys.dm_exec_connections ec on ec.session_id = es.session_id cross apply sys.dm_exec_sql_text(ec.most_recent_sql_handle) as st where resource_database_id = db_id() order by dtl.request_session_id
Views: 156 IT Port
SQL tutorial 42: How to Unlock user using SQL Developer By Manish Sharma RebellionRider
 
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In this tutorial you will learn how to unlock account using SQL Developer. Using the steps used in this tutorial you can unlock any user account such as HR,OE,Scott in oracle database. Another part of user management in Oracle Database. Keep watching Enjoy SQLing Celebrating 1000 subscribers. Thanks a lot guys for all your love and support. ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Website: www,Rebellionrider.com Blog: http://bit.ly/unlock-user-using-sql-developer Previous Tutorial: How to unlock user using SQL Alter User command http://youtu.be/sMqq9MSVmQo Tutorial 38: http://youtu.be/GS4udgR44Ls Links of how to create user tutorial Create user using SQL Developer http://youtu.be/GS4udgR44Ls Create user using Create user command http://youtu.be/4QbK2Y-1LZw Create user using EM http://youtu.be/zGjh-Bb3HrI ------------------------------------------------------------------------- -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the first 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 [email protected] 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: 23464 Manish Sharma
What IS A Typical Day Like As An Oracle DBA
 
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What IS A Typical Day Like As An Oracle DBA--Oracle Training-Neway IT Solutions. 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: 17682 NewayITSolutions LLC
How Select and Update work - A beginners guide to DB2 internals
 
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Roy Cecil works as a Software Performance Engineer based out of the Dublin Software Labs and has been involved in the performance leadership of DB2 pureScale. He has over 13 years of industry experience in a variety of roles involving software development, consulting and software performance engineering. and databases.
Exclusive - Locks in SQL Server - Part 5
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Exclusive (X) locks prevent access to a resource by concurrent transactions. With an exclusive (X) lock, no other transactions can modify data Repeatable read and Higher Isolation level transactions can’t read that locked data and Rest of the levels can read. No Lock hints Can read this data. Isolation Level - https://youtu.be/ESET4zuNLoM Script for Active_Locks Function --------------------------------------------------- Create Function Active_locks () returns table return select Top 10000000 case dtl.request_session_id when -2 then 'orphaned distributed transaction' when -3 then 'deferred recovery transaction' else dtl.request_session_id end as spid, db_name(dtl.resource_database_id) as databasename, so.name as lockedobjectname, dtl.resource_type as lockedresource, dtl.request_mode as locktype, es.login_name as loginname, es.host_name as hostname, case tst.is_user_transaction when 0 then 'system transaction' when 1 then 'user transaction' end as user_or_system_transaction, at.name as transactionname, dtl.request_status from sys.dm_tran_locks dtl join sys.partitions sp on sp.hobt_id = dtl.resource_associated_entity_id join sys.objects so on so.object_id = sp.object_id join sys.dm_exec_sessions es on es.session_id = dtl.request_session_id join sys.dm_tran_session_transactions tst on es.session_id = tst.session_id join sys.dm_tran_active_transactions at on tst.transaction_id = at.transaction_id join sys.dm_exec_connections ec on ec.session_id = es.session_id cross apply sys.dm_exec_sql_text(ec.most_recent_sql_handle) as st where resource_database_id = db_id() order by dtl.request_session_id
Views: 343 IT Port
ORACLE 12C Online Training  || Class - 3  by  by Dinesh
 
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oracle tutorial oracle tutorial for beginnersa oracle dba tutorial for beginners oracle dba training videos oracle 11g tutorial oracle 11g tutorial for beginners oracle 11g architecture explanation oracle 12c tutorial for beginners oracle 12c new features oracle 12c installation on linux oracle 12c architecture oracle 12c installation oracle 12c dba training videos oracle 12c rac installation on linux
Module 1- Introduction to Oracle Database
 
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Hello viewers, We are starting our section on professional courses and for which we are starting our course material which is based on the Oracle Database, Please refer to the description below for knowing which topics will be covered in Oracle DBA Installation Module 1 – Introduction to Database • Introduction to Database • How ORACLE DB does it • Unix kernal Module 2 – Physical Database Structure • Physical Database Structure • Control files • Key information of files • Redo log files Module 3 – Oracle Storage structures • Oracle Storage structures • Table statement • How to check “create table” • Schemas and schema objects • Data blocks • Extents • Segments Module 4 – Memory & Process Architecture • Memory & Process Architecture • Instance/Memory structures • Shared pool • Buffer Cache • Redo Log Buffer • Process Architecture • Background process Module 5 – Background Process, Alert & Trace files • Background Process, Alert & Trace files • Alert • Trace files Module 6 – Database Startup & Serving User Requests • Database Startup & Serving User Requests • Offline backup • Standby Database Module 12 – Oracle Recovery Manager (RMAN) • Oracle Recovery Manager (RMAN) • Data pump export & import • SQL loader • External table Module 13 – Data dictionary & Dynamic Performance Tables • Data dictionary & Dynamic Performance Tables • Dynamic performance Tables • Typical day ORACLE DBA Module 14 – Introduction to Database Tuning • Introduction to Database Tuning • Monitor space usage • Monitor SQL scripts • Data base tuning • SQL tuning • Table Statistics • Index statistics • Index Selectivity • Chained Rows • Locks Module 15 – Introduction to Database Tuning Continued • Introduction to Database Tuning Continued • Tuning Shared pool • Data dictionary performance • Data dictionary tuning • PL/SQL code • Code reuse • Data base Buffer • Buffer cache hit Ratio • Code reuse • Database Startup • User process, Server process Module 7 – Database Security • Database Security • Process of “Create User” • Alter & Drop User • Resource Limits & profiles • Auditing Module 8 – Schema Objects • Schema Objects • Types of schema objects • How table data is stored • Temporary Tables • External Tables Module 9 – Schema Object Continued • Schema Object Continued • Materialized View • Sequence Generator • Indexes • B-Tree index structure • Cluster/Hash Cluster • Data concurrency & consistency • Locking • Deadlocks Module 10 – Oracle Network Environment • Oracle Network Environment • How to connect your database • Network environment of ORACLE • Database link Module 11 – Oracle Backup & Recovery Concepts • Oracle Backup & Recovery Concepts • Standby database • Testing • Media recovery options so in today's video, we will be discussing Module -1 The Introduction to Oracle Database. ----------------------------------------------------------------------------------------------------------- For downloading notes in PDF format please visit my Blog https://thedynamicstudy.blogspot.com/ ---------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------- Please go through the video and don't forget to share your views and subscribe the channel to keep the content open and reachable to students. ---------------------------------------------------------------------------------------------------- keep on watching, keep on learning! #dynamicstudy -~-~~-~~~-~~-~- Please watch: "OCTAPACE - Detailed Explanation in Hindi" https://www.youtube.com/watch?v=f_4WET6y49c -~-~~-~~~-~~-~-
Views: 96 Dynamic Study
SGA, PGA, help me with all these GA's
 
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Highlights from the DBA Office Hours session. Subscribe for more highlight videos coming soon! blog: https://connor-mcdonald.com
Views: 440 Connor McDonald
(INTRODUCTION)INtroduction to DML UPDATE
 
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(INTRODUCTION)INtroduction to DML UPDATE Oracle 11g Online training at TekClasses.com gives the in-depth knowledge on real-time work experience. Oracle Database is also be defined as RDBMS, it's an Object-relational data base management system which developed by Oracle Corporation. Oracle 11g is the latest and most refined database system. It enables sophisticated applications, high-speed transactions and higher business selections. Information will be accessed through SQL from the database and Oracle is not any exception. PL/SQL is the procedural language extension to the SQL. There is no other way to access the information from within the program and the SQL is often embedded in PL/SQL programs. www.tekclasses.com
Views: 223 TEK CLASSES
SCPT 39 : Types of DML Locks
 
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The two basic types of locks are DML (table) locks, and DDL (dictionary) locks. DML locks are designed to guarantee data integrity in a multi-user environment. DML locks prevent conflicting DML and DDL operations from interfering with each other’s operations. These locks are generally either table level locks, or row level locks.
Oracle Video Tutorial In Telugu What is RDBMS and how it is different from flat files Part 5
 
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Oracle Video Tutorial In Telugu, -~-~~-~~~-~~-~- Please watch: "Best Useful software For Windows Telugu" https://www.youtube.com/watch?v=puGZTRTSoVA -~-~~-~~~-~~-~- #telugutechtuts #hafiztime
Views: 21478 Telugu TechTuts
Managing Resumable Space Allocation in Oracle database
 
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By Vivek Saxena Insa Shabad Coachings Shamli Resumable Space Allocation is given by extending the data file size with a open database Alter session enable resumable; Create tablespace spr datafile 'c:\db3\data\spr1a.dbf' size 100k; Create table spr(rn number(10) tablespace spr; Insert into spr(select salary from hr.employees); Insert into spr (select * from spr); Set oracle_sid= orcl Sqlplus/nolog Conn/as syadba Alter database datafile 'c:\db3\data\spr1a.dbf' resize 300k;

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