Home
Search results “Insert lock oracle”
Oracle DBA - Solve Long Running Query & TX Row Lock Contention | Performance Tuning
 
09:19
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: 7173 BoxCut Media
01 Oracle database Table lock
 
20:58
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: 796 Md Arshad
02 Shared Lock & Exclusive Lock In oracle database table lock
 
11:32
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: 883 Md Arshad
03 Dead Lock in oracle database
 
11:37
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: 255 Md Arshad
DML Processing in an Oracle Database -  DBArch Video 8
 
09:07
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: 55781 Ramkumar Swaminathan
Difference between blocking and deadlocking
 
06:52
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: 73643 kudvenkat
Oracle Database 12c Tutorial  2: How To Unlock HR schema in Oracle Database 12c
 
07:18
Learn how to unlock HR user / Schema in Oracle Database 12c. Step by step procedure of unlocking the HR Schema in Oracle 12c By Manish Sharma a.k.a RebellionRider ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/how-to-unlock-hr-user-in-oracle-database-12c Previous Tutorial ► Tut 60: How To Install 12c On Windows 7: http://youtu.be/T-rCbe1MMG4 ------------------------------------------------------------------------- ►►►Help Me In Getting A Job◄◄◄ ►Help Me In Getting A Good Job By Connecting With Me on My LinkedIn and Endorsing My Skills. All My Contact Info is Down Below. You Can Also Refer Me To Your Company Thanks ------------------------------------------------------------------------- Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=kb4rc1 -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! -------------------------------------------------------------------------- Amazon Wishlist: http://bit.ly/wishlist-amazon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at [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: 84228 Manish Sharma
Oracle SQLLDR Concepts
 
10:34
Oracle SQLLDR Concepts
Views: 148 The Silent DBA
Table Locking ( MySQL ) - Tutorial
 
05:26
Table locking is an existing query in mysql, where this query is used to lock the table at the time the user or admin wants to perform INSERT, UPDATE, or DELETE. This query is run when a database resides on the server and there are few users who can access the database.So in order to avoid conflicting data during INSERT, UPDATE, DELETE then use Table Locking. - Introduction : 0:00 - Coding : 0:52
Views: 7003 Muhammad Ikram
Oracle 11g Lock Monitoring with Read Committed Transaction Isolation Level Brief Explanation
 
12:24
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: 200 Boby Siswanto
Managing Resumable Space Allocation in Oracle database
 
02:56
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;
Hints and Tips - Avoiding never ending locks - part 1
 
05:52
Row locking is a critical component of ensuring the integrity of your data inside the database. But locks of extended duration can easily create system-wide problems in your applications. This quick tip gives you some ideas for handling locks better. ====================================================== Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 1212 Connor McDonald
How to use the auto commit feature in oracle database
 
03:11
How to use the auto commit feature in oracle database ===================================================== show autocommit; set autocommit on; create table fruit(sno number); insert into fruit values(1); insert inot fruit values(2); how to rollback the uncommited transactions ========================================= rollback;
Views: 851 Praveen Biyyapu
SQL Server deadlock example
 
05:14
Text version of the video http://csharp-video-tutorials.blogspot.com/2015/08/sql-server-deadlock-example.html Slides http://csharp-video-tutorials.blogspot.com/2015/08/sql-server-deadlock-example_25.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists When can a deadlock occur In a database, a deadlock occurs when two or more processes have a resource locked, and each process requests a lock on the resource that another process has already locked. Neither of the transactions here can move forward, as each one is waiting for the other to release the lock. When deadlocks occur, SQL Server will choose one of processes as the deadlock victim and rollback that process, so the other process can move forward. The transaction that is chosen as the deadlock victim will produce the following error. Msg 1205, Level 13, State 51, Line 1 Transaction (Process ID 57) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. 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 The following 2 transactions will result in a dead lock. 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. -- 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 Next Video : We will discuss the criteria SQL Server uses to choose a deadlock victim
Views: 61565 kudvenkat
HOW TO PERFORM DML OPERATION IN ORACLE SQL.
 
05:34
In this video i'll show you how to perform DML operation/statement in oracle sql
Views: 141 Medtech 655
How To Install A Rail On A Factory AR-15 Handguard
 
08:07
This video describes how to attach a rail to a standard plastic AR-15 handguard. While not as fancy as a free float rail, this provides a lightweight, inexpensive option for mountain forward grips, lights, etc. Follow me in Instagram: https://www.instagram.com/rmadventure/ Film Equipment used in this video: Canon 60D Canon 15-85mm IS: https://amzn.to/2CorGJF TakStar Shotgun Mike: https://amzn.to/2RX0fMw These are affiliate links, they don't cost you anything, but I receive a small commission if you make a purchase.
Views: 113788 AdventureColorado
Multiple Inserts
 
03:23
Views: 27 Geeky Abhijeet
Oracle Database Users / User Management (Simple)
 
09:33
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: 41487 Abbasi Asif
Oracle username and password and Account unlocking
 
08:37
all education purpose videos
Views: 279233 Chandra Shekhar Reddy
Oracle Database XE Forgot Password
 
05:27
In this video, we’ll learn how to reset the password for an account in Oracle XE. Are you running Oracle database XE 11.2 and forgot your password? It can be for any Oracle XE version actually, but this is the latest one at the moment. Don’t worry, there are a few ways to recover this password. It also depends on if you know the password, and if you’re able to log in to the account still, as there is a time limit on these passwords. If you’ve forgotten it, then you won’t be able to log in as that account. But this video will help you reset the password so you can use the account again. For more information on Oracle SQL, check out DatabaseStar: https://www.databasestar.com/
Views: 1797 Database Star
How to manager Oracle database locks and deadlocks with Oracle Enterprise Manager 12C
 
02:21
Video tutorials on How to manager Oracle database locks and deadlocks with Oracle Enterprise Manager 12C For more Database Administration articles and scripts go to www.aodba.com & www.verticablog.com More Articles, Scripts and How-To Papers on http://www.aodba.com
Views: 3299 AO DBA
Oracle Database 12c Tutorial 4: How to install sample schemas / users in Oracle Database 12c
 
08:33
Learn how to install sample schemas or users in oracle database 12c, In this tutorial you will also learn how to create a pluggable database in oracle database 12c by manish sharma RebellionRider ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/how-to-install-sample-schema-users-hr-sh-in-oracle-12c Previous Tutorial ► Tut 61: How To Unlock HR schema in Oracle Database 12c http://youtu.be/F81gfUnznZY ------------------------------------------------------------------------- ►►►Help Me In Getting A Job◄◄◄ ►Help Me In Getting A Good Job By Connecting With Me on My LinkedIn and Endorsing My Skills. All My Contact Info is Down Below. You Can Also Refer Me To Your Company Thanks ------------------------------------------------------------------------- Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=kb4rc1 -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! -------------------------------------------------------------------------- Amazon Wishlist: http://bit.ly/wishlist-amazon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at [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: 54049 Manish Sharma
VBoxGuestAdditions.iso ● Virtual Box  ●  Error Solved on Linux
 
04:11
Installation of the GuestAdditions for Virtual Box Linux VM. When you try to Insert Guest addition CD you get the message Unable to mount the CD/DVD image /usr/share/virtualbox/VBoxGuestAdditions.iso on the machine Sandbox. Would you like to force mounting of this medium? To mount the iso file # mount -o loop ./VBOxGuestAdditions.iso /media/GuestAdditionISO Prepared by Christian ALT for http://Vision6D.com Channel about IT Technology, Management and Communication
Views: 17841 Vision 6D
Understanding RID Lock Part 1 in sql server
 
05:01
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: 594 SqlIsEasy
PLSQL Trigger, Row and Statement Level Trigger, How to Write Trigger in Oracle 11g Database
 
10:23
PLSQL Trigger, Row and Statement Level Trigger, How to Write Trigger in Oracle 11g Database PL-SQL tutorial for Beginners in Hindi and English
18. Savepoint, Rollback and Commit in Oracle
 
06:39
In this video you will learn about Savepoint, Rollback and Commit. We will begin by quick introduction and then jump into demo. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 47255 ITORIAN
Why UPSERT is weird
 
52:43
by Peter Geoghegan Counterintuitive lessons learned from the implementation effort Talk that examines implementation process on the INSERT...ON DUPLICATE KEY LOCK FOR UPDATE feature proposed for PostgreSQL. "UPSERT" can loosely be described as a DBMS feature that allows a DML statement's author to atomically either insert a row, or on the basis of the row already existing, update that existing row instead, while safely giving little to no further thought to concurrency. One of those two outcomes must be guaranteed, regardless of concurrent activity, which is the essential property of UPSERT. Examples include MySQL's INSERT...ON DUPLICATE KEY UPDATE, or the SQL standard's MERGE statement (as implemented in a number of proprietary systems). The absence of this feature from Postgres has been a long-standing complaint from Postgres users, and an effort to implement an extension to the Postgres INSERT statement, that implements something broadly in line with user expectations in this area was undertaken in 2013. This talk considers the experience of working on that implementation, and examines how the proposed INSERT...ON DUPLICATE KEY LOCK FOR UPDATE feature deals with concurrency issues, visibility issues, the interplay of value locking and row locking, and the general avoidance of unprincipled deadlocking. In order to come up with an implementation that satisfied user expectations, while still preserving and respecting long standing abstractions and conceptual precepts, some interesting and counterintuitive choices were made to resolve the fundamental tension in tying value locking (as always required on a limited scale for unique index enforcement) to row locking (to LOCK FOR UPDATE). Finally, the talk examines the strategic significance of UPSERT, and further use-cases enabled by the feature in the area of multi-master replication conflict resolution.
Views: 549 Andrea Ross
Developing Mobile Apps with Oracle Autonomous Visual Builder Cloud Service
 
09:38
A demonstration of the process for developing and publishing an on-device mobile application with Oracle Visual Builder Cloud Service
Lock Compatibility in SQL Server
 
10:14
Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Lock compatibility controls whether multiple transactions can acquire locks on the same resource at the same time. If a resource is already locked by another transaction, a new lock request can be granted only if the mode of the requested lock is compatible with the mode of the existing lock. If the mode of the requested lock is not compatible with the existing lock, the transaction requesting the new lock waits for the existing lock to be released or for the lock timeout interval to expire.For example, no lock modes are compatible with exclusive locks. While an exclusive (X) lock is held, no other transaction can acquire a lock of any kind (shared, update, or exclusive) on that resource until the exclusive (X) lock is released. Alternatively, if a shared (S) lock has been applied to a resource, other transactions can also acquire a shared lock or an update (U) lock on that item even if the first transaction has not completed. However, other transactions cannot acquire an exclusive lock until the shared lock has been released.
Views: 355 IT Port
Bulk Update - Locks in SQL Server - Part 9
 
07:41
Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg The Database Engine uses bulk update (BU) locks when bulk copying data into a table, and either the TABLOCK hint is specified or the table lock on bulk load table option is set using sp_tableoption. Bulk update (BU) locks allow multiple threads to bulk load data concurrently into the same table while preventing other processes that are not bulk loading data from accessing the table.
Views: 382 IT Port
Types of locks.mp4
 
01:50
Views: 52 Kelsey Nash
How to use partitioning to improve performance of large tables
 
42:49
In this video we cover in much more detail the improvement in performance that can be achieved by using partitioning. MS SQL server databases can scale well using this feature. We cover how partitioning a table gives similar performance as a single table with a clustered index, we then explore how adding NC index improve performance of the heap table as well as the partitioned table.
Views: 18940 Jayanth Kurup
Real-World Performance - 15 - Index Contention
 
19:46
Check out the entire series on the Oracle Learning Library at http://www.oracle.com/goto/oll/rwp In this video, listen and watch Andrew Holdsworth, Vice President of Oracle Database Real-World Performance at Oracle Corporation, as he explains how index contention affects performance. Copyright © 2014 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.
Concorrencia Oracle
 
09:17
neste vídeo vemos como funciona a concorrência de transações no Oracle. Apresentamos conceitos como LOCK, BLOCK e DEADLOCK
Views: 390 Eduardo Morelli
sql lock
 
01:00:44
Views: 73 man-han Tsai
SQL for Beginners (Part 9) : The UPDATE Statement
 
02:47
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: 697 ORACLE-BASE.com
PL/SQL: Mutating Triggers Part-1
 
06:24
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: 24294 radhikaravikumar
Oracle, Find Failed Queries
 
03:54
It is very difficult to find failed queries executed by Entity Framework. Use following plsql trigger to find quries CREATE TABLE QUERY_LOG ( ID NUMBER, ORA_ERR VARCHAR2(10), EXE_DATE DATE, QRY_LOG NCLOB) / CREATE SEQUENCE QUERY_LOG_ID NOCACHE / CREATE OR REPLACE TRIGGER Failed_To_Extend_Temp AFTER SERVERERROR ON DATABASE DECLARE l_sql_text ora_name_list_t; l_n NUMBER; t1 NCLOB; BEGIN --IF (is_servererror(942) ) THEN l_n := ora_sql_txt(l_sql_text ); FOR I IN 1 .. l_n LOOP t1 := t1||l_sql_text(i); END LOOP; INSERT INTO QUERY_LOG (Id , Ora_Err , EXE_DATE , QRY_LOG) VALUES (QUERY_LOG_ID.Nextval, ora_server_error(1), Sysdate,t1 ); --END IF; END; /
Views: 53 Nivas Shelke
Oracle In Telugu SELECT COMMAND WITH WHERE CONDITON Part 11
 
09:44
Oracle In Telugu,ms excel 2007 tutorial in telugu,ms word 2007 tutorial in telugu,c language tutorial for beginners in telugu, excel 2007 tutorial in telugu, vlookup in excel 2007 with example in telugu,ms office 2007 tutorials in telugu,,ms access 2007 tutorial in telugu, tally erp 9 full tutorial in telugu,anu script telugu typing tutorial,photoshop in telugu,ms powerpoint 2007 tutorial in telugu, pagemaker tutorial in telugu,adobe photoshop tutorial in telugu, hardware and networking tutorials in telugu,excel tutorial in telugu,ms-excel 2007 tutorial in telugu, excel in telugu, telugu excel tutorial,adobe Photoshop in telugu,ms word 2007 in telugu , ms word 2007 tutorial in telugu, C basis in telugu, hardware in telugu, web designing in telugu,html in telugu, dreamweaver in telugu, c++ in telugu, java in telugu, autocad in telugu, computer tips in telugu, computer basics in telugu, hacking in telugu, computer tips in telugu -~-~~-~~~-~~-~- Please watch: "Best Useful software For Windows Telugu" https://www.youtube.com/watch?v=puGZTRTSoVA -~-~~-~~~-~~-~- #telugutechtuts #hafiztime
Views: 8142 Telugu TechTuts
Audit table changes in sql server
 
06:45
sql server 2008 ddl trigger audit sql server table changes tracking In this video we will discuss, how to audit table changes in SQL Server using a DDL trigger. Table to store the audit data Create table TableChanges ( DatabaseName nvarchar(250), TableName nvarchar(250), EventType nvarchar(250), LoginName nvarchar(250), SQLCommand nvarchar(2500), AuditDateTime datetime ) Go The following trigger audits all table changes in all databases on a SQL Server. CREATE TRIGGER tr_AuditTableChanges ON ALL SERVER FOR CREATE_TABLE, ALTER_TABLE, DROP_TABLE AS BEGIN DECLARE @EventData XML SELECT @EventData = EVENTDATA() INSERT INTO SampleDB.dbo.TableChanges (DatabaseName, TableName, EventType, LoginName, SQLCommand, AuditDateTime) VALUES ( @EventData.value('(/EVENT_INSTANCE/DatabaseName)[1]', 'varchar(250)'), @EventData.value('(/EVENT_INSTANCE/ObjectName)[1]', 'varchar(250)'), @EventData.value('(/EVENT_INSTANCE/EventType)[1]', 'nvarchar(250)'), @EventData.value('(/EVENT_INSTANCE/LoginName)[1]', 'varchar(250)'), @EventData.value('(/EVENT_INSTANCE/TSQLCommand)[1]', 'nvarchar(2500)'), GetDate() ) END In the above example we are using EventData() function which returns event data in XML format. Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/audit-table-changes-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/audit-table-changes-in-sql-server_12.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html Full SQL Server Course https://www.youtube.com/playlist?list=PL4cyC4G0M1RQ_Rm52cQ4CcOJ_T_HXeMB4 All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 41456 kudvenkat
Installing Mojo Grill Inserts American Flag!
 
09:47
We install the Mojo Grill Inserts provided American Flag perforated aluminum grill insert into the 4LowRocks Jeep Wrangler Unlimited Rubicon. This modification is all about the bling (and patriotism) and the result is fantastic!. Visit mojogrillinserts.com today to order your own insert! If you shop Amazon, drag or copy the following link to your desktop or make a shortcut and use it every time you visit Amazon.com. Your support using this link helps the 4LowRocks Channel keep awesome content coming your way! https://amzn.to/2Ivr0a2 Here are some specific links to products I’ve used for my Jeep: Warn VR10S Winch: https://amzn.to/2NjqtH4 Warn Winch Plate for JL Wrangler: https://amzn.to/2IsPS28 Warn Synthetic Rope: https://amzn.to/2IuX7H7 El Jefe Winch Cover: https://amzn.to/2XhJr5q SmittyBilt Tree Strap: https://amzn.to/2XfV2SG SmittyBilt Shackles: https://amzn.to/2VelQAV Rhino Recovery Strap: https://amzn.to/2U9mGyw SmittyBilt Recovery Bag: https://amzn.to/2EoKA3K SmittyBilt Portable Air Compressor: https://amzn.to/2H1xw5Y ARB Tire Deflator: https://amzn.to/2IpWzCa Midland CB Radio: https://amzn.to/2IuYy8t SWR Meter for CB Antenna Tuning: https://amzn.to/2U2VYHQ Firestik CB Antenna Quick Disconnect: https://amzn.to/2XdqgtA Firestik CB Antenna Spring: https://amzn.to/2E3BnMS Shorty AM/FM Radio Antenna: https://amzn.to/2GWBo8z BNC Connector Cover: https://amzn.to/2DWVmN6 Baofeng BF-F8HP Ham Radio: https://amzn.to/2U4e4cE Nagoya NA-771 15.6-inch antenna: https://amzn.to/2U4erUA BTECH Programming Cable for Baofeng Ham Radio: https://amzn.to/2NmrJZS MOPAR JL Wrangler Floor Mats (4-Door): https://amzn.to/2E4NWYa Trim & Fastener Removal Tools: https://amzn.to/2GVlQlq First Aid Kit (Molle Fasteners): https://amzn.to/2V5EISu Pop-up Privacy Tent: https://amzn.to/2U3e906 BFG KO2 All-Terrain 35” Tires: https://amzn.to/2twk5mN Mamba M23 17x9 Wheels: https://amzn.to/2Eq3pnd Nilight 20” Light Bar: https://amzn.to/2NlqASp Nilight Cube Lights: https://amzn.to/2EoLkWA MOPAR Tailgate Table https://amzn.to/2U2g8li Rock Hard JL LCA Skid Plates https://amzn.to/2GVovvw Renogy 100W Solar Suitcase https://amzn.to/2VdEoRB Surge Guard 30W RV Protector https://amzn.to/2VaETMk K&N Reusable Air Filter https://amzn.to/2TXOING K&N Air Filter Recharge Kit https://amzn.to/2Iv18vb Are you curious about my shaking hands? Learn about essential tremor at: https://www.essentialtremor.org Thank you for visiting 4LowRocks! This YouTube channel is intended solely for informational and entertainment purposes. 4LowRocks assumes no liability for property damage or injury incurred as a result of any of the information contained in this video or any other 4LowRocks production. No information contained in this video or any other 4LowRocks production shall create any expressed or implied warranty or guarantee of any particular result, endorsement of any product, procedures, specifications, nor advice on use, maintenance, or installation/removal of any product or parts. Any injury, damage, or loss that may result from improper use of vehicles, products, tools, equipment, or from the information contained in this video or any other 4LowRocks production is the sole responsibility of the user and not 4LowRocks. Your agreement to the above disclaimer is implied by watching 4LowRocks video productions.
Views: 418 4LowRocks
Student Attendance with Fingerprint Reader
 
08:44
Get the project at http://nevonprojects.com/student-attendance-with-fingerprint-reader/ This project allows user to get student attendance using fingerprint scanning along with admin attendance reports as desired.
Views: 199604 Nevon Projects
Oracle || PL/SQL Type Compatibility Part - 4 by dinesh
 
19:20
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 remove duplicates form a table in oracle
 
02:43
removing of duplicates using sql querries
Views: 135 informatica
Oracle Aide || How to create timer or a run time clock in a form
 
15:43
This video will helpfull those people that are want to work with run time clock . use create time, when timer expired
Views: 700 Mahadi Hasan
AR15 Load and Unload
 
03:44
Views: 360257 Lawrence Luttrell
Oracle Database: How-To: Change User Password
 
02:11
The Best Site to Learn Oracle Database Administration Online
Views: 23302 TechnicalSkills
Search between a Giant Rock Man, a Crowned Tomato and an Encircled Tree – LOCATION WEEK 5 Fortnite
 
01:38
Fortnite Week 5 Challenges Battle Star Location for "Search between a Giant Rock Man a Crowned Tomato and an Encircled Tree" go over here and collect it. Like and Subscribe for more videos! ►GATOR MERCH : http://bit.ly/gattu-shop SOCIAL LINKS : • TWITTER : https://twitter.com/gattugaming • INSTAGRAM : https://www.instagram.com/gattugaming/ CREDITS : Song: JJD - Adventure [NCS Release] Music provided by NoCopyrightSounds. Video Link: https://www.youtube.com/watch?v=f2xGxd9xPYA • https://soundcloud.com/jjdofficial • https://www.facebook.com/jjdofficial • https://www.youtube.com/user/JJDofficial ----------------------------------------------------------------------------------------------------------- Reach me out at : [email protected]
Views: 1962811 gattu