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2. An exception raised does not automatically roll back uncommitted changes to tables.
 
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Any non-query DML statements that complete successfully in your session are not rolled back when an exception occurs - either directly in PL/SQL or propagated out from the SQL engine. You still have the option of either committing or rolling back yourself. If, however, the exception goes unhandled out to the host environment, a rollback almost always occurs (this is performed by the host environment). Related blog post: http://stevenfeuersteinonplsql.blogspot.com/2016/03/nine-good-to-knows-about-plsql-error.html ======================================== Practically Perfect PL/SQL with Steven Feuerstein 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.
SCPT 43: How Commit and Rollback Works in Oracle
 
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Oracle DBA Tutorials For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=6 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 21732 Oresoft LWC
Rollback,Savepoint,Commit,Transaction IN ORACLE PART1
 
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PART1 1-ROLLBACK 2-SAVE POINT 3-ROLLBACK TO AN SAVE POINT 4-COMMIT 5-SET TRANSACTION PART2 6-GRANT 7-DEADLOCK .....BY YASSIR TAQATQA بواسطة ياسر طقاطقة
Views: 3373 Yassir Taqatqa
Oracle SQL Developer Tutorial For Beginners   46  TCL   ROLLBACK
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 1065 Sam Dhanasekaran
How to recover a dropped table in oracle?
 
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This is a free tutorial video on how to use the FLASHBACK TABLE query to restore a dropped table in oracle, and we have given some useful information on PURGE, RECYCLEBIN and shown some demo on how to restore a dropped table in oracle.
Views: 1920 Kishan Mashru
About that error: ORA-06502: numeric or value error
 
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"ORA-06502: numeric or value error" is one of the most commonly occurring and irritating errors for PL/SQL developers. Value too big for its "container"? Trying to stuff a non-numeric string value into a number through implicit conversion? [naughty naughty] In this video, Steven takes a close look at ORA-06502, exploring the ways it can be raised and how best to deal with those scenarios. ============================ Practically Perfect PL/SQL with Steven Feuerstein 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.
How to Handle Exceptions Properly - Part 3
 
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In this third video in the series, Steven switches gears to talk about to properly handle exceptions: build or find a single reusable logging procedure and call that. Only pass it variables from your current application state that cannot be obtained via built-in calls, like DBMS_UTILITY.FORMAT_ERROR_BACKTRACE. Related LiveSQL Script: https://livesql.oracle.com/apex/livesql/file/content_EHHFC36YW2834RB7Z9OE846C6.html Related blog post: http://stevenfeuersteinonplsql.blogspot.com/2017/02/now-not-to-handle-exceptions.html To download the Logger utility, visit github.com/oraopensource/logger ======================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2016 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.
How to commit in a trigger?
 
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This video is a free video tutorial on how to commit or rollback in a pl/sql trigger, it demonstrates the use of pragma autonomous_transaction and commit in a trigger, also it shows various scenarios which would lead to misleading data and exceptions that would be raised if pragma autonomous_transaction is not properly used in the trigger.
Views: 2888 Kishan Mashru
Oracle Database Exception Handling
 
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Oracle Database Exception Handling
Views: 442 Lead Technologies
PLS-18: Non Predefined Exceptions in PL/SQL
 
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PL/SQL For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=5 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 18173 Oresoft LWC
Oracle Database 12c: Better PL/SQL From SQL
 
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Overview and demonstration of using the plsql_declarations clause to embed a PL/SQL function in a SQL SELECT statement. "plsql_declarations" in Oracle® Database SQL Language Reference http://www.oracle.com/pls/topic/lookup?ctx=db121&id=BABJCBCC
Views: 2579 OracleDBVision
SQL: Transaction Part-1
 
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In this tutorial, you'll learn what are transaction and nature of transaction. 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: 2896 radhikaravikumar
Oracle tutorial : Autonomous Transactions in Oracle 11g PL SQL-PRAGMA
 
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Oracle tutorial : Autonomous Transactions in Oracle 11g PL SQL-PRAGMA What is pragma autonomous_transaction An autonomous transaction is an independent transaction to the main or parent transaction. If an Autonomous transaction is started by another transaction it is not nested, but independent of parent transaction. PRAGMA autonomous_transaction 1)In Oracle session, all of the changes made to data are part of a single transaction. 2)An autonomous transaction is an independent transaction started within another transaction (the main transaction). 3)Autonomous transactions allow you to temporarily suspend the main transaction, perform additional SQL operations, commit or rollback those operations separately, then resume the main transaction. 4)To define an autonomous transaction, we can use a PRAGMA statement PRAGMA AUTONOMOUS_TRANSACTION; CREATE TABLE log_data ( empno NUMBER(6), userid VARCHAR2(30), create_date DATE ); CREATE OR REPLACE TRIGGER add_log BEFORE INSERT OR UPDATE ON employee FOR EACH ROW DECLARE PRAGMA AUTONOMOUS_TRANSACTION; — This statement made this autonomous this trigger BEGIN INSERT INTO log_data VALUES (:new.id, USER, SYSDATE); COMMIT; END; / Insert into EMPLOYEE (ID, NAME, CITY, SALARY, DEPT_NO) Values (20, ‘MY Tech Query’, ‘Mumbai’, 20000, 1) ROLLBACK; SELECT * FROM EMPLOYEE SELECT * FROM LOG_DATA https://www.youtube.com/channel/UCpiyAesWNYOXSz5GPq8lbkA For more tutorial please visit #techquerypond https://techquerypond.com https://techquerypond.wordpress.com https://twitter.com/techquerypond
Views: 2485 Tech Query Pond
What is Autonomous transaction in Oracle
 
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What is Autonomous transaction in Oracle. This is very frequently asking question in Interview. Hello Friend, in this Video You can learn how we can give the answer of Autonomous Transactions. An autonomous transaction is available from Oracle 8i. It is a very cool, useful, unique and powerful feature in oracle. An autonomous transaction is an independent transaction that is initiated by another transaction. It must contain at least one Structured Query Language (SQL) statement. When an autonomous transaction is called, the original transaction (calling transaction) is temporarily suspended. The autonomous transaction must commit or roll back before it returns control to the calling transaction. Once changes have been made by an autonomous transaction, those changes are visible to other transactions in the database. Autonomous transactions can be nested. For use Autonomous Transactions feature in program we have to use PRAGMA AUTONOMOUS_TRANSACTION Key word in Program When to use Autonomous Transactions? • Logging mechanism you need to log an error to your database log table. On the other hand, you need to roll back your core transaction because of the error. And you don't want to roll back over other log entries. • Commits and rollbacks in your database triggers If you define a trigger as an autonomous transaction, then you can commit and/or roll back in that code. • Software usage meter You want to keep track of how often a program is called during an application session. This information is not dependent on, and cannot affect, the transaction being processed in the application. Mutation Error Using autonomous transaction we can avoid mutation error. IF you want to share with your friend this video you can copy below block of text with link and past your friend group. ----------------------------------------------------------------------------- What is autonomous transaction in Oracle This is a very frequently ask Question in Interview Please Share this video with your friends and Oracle groups and communities. https://www.youtube.com/watch?v=gyvFajpfoWE ----------------------------------------------------------------------------- For More video's you can use blow link. https://www.youtube.com/user/rameshwargupta1/videos Join With us our Facebook Group for PLSQL Interview Q/A https://www.facebook.com/groups/146487615764170/ Join our Blogs http://oracletemple.blogspot.in/ Watch More... What is Parameterized Cursor in Oracle https://www.youtube.com/watch?v=JMKwHlVi6-A What is autonomous transaction in Oracle. https://www.youtube.com/watch?v=gyvFajpfoWE What are Constraints available in Oracle. https://www.youtube.com/watch?v=WivhdLXQklQ What is Mutation Error and How to avoid mutation. https://www.youtube.com/watch?v=CbWNCyW18Bs 5 Effective way to delete Duplicate rows https://www.youtube.com/watch?v=1wtTtnc87Oc What is Difference between Delete and Truncate https://www.youtube.com/watch?v=7b6wQ3Qumgg
Views: 13724 Ram Gupta
SQL: Delete Vs Truncate Vs Drop
 
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In this tutorial, you'll learn the difference between delete/drop and truncate. 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: 59300 radhikaravikumar
Oracle SQL Developer Tutorial For Beginners   42    Handling a Transaction through REDO
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 1299 Sam Dhanasekaran
What is PRAGMA AUTONOMOUS_TRANSACTION in oracle?
 
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This free video tutorial is to understand the concept of autonomous transactions and how to use them to best of our advantages, it also contains a video tutorial and demonstration on using of pragma autonomous_transaction in an oracle pl/sql stored procedure.
Views: 4260 Kishan Mashru
Using Mule Transactions to Rollback in the Case of an Error
 
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Do you ever need to rollback actions when an error occurs? In this tutorial I walk through wrapping a series of Mule components in a Transaction. This will guarantee data integrity when an error does occur. GitHub source code link: https://github.com/estesolutions/tutorial--transactions-mule Have any other topics you would like me to cover? Leave it in a comment below. FOLLOW ME ON SOCIAL MEDIA - Twitter: https://twitter.com/JasonEstevan - Linked In: https://www.linkedin.com/in/JasonEstevan/
Views: 1189 Jason Estevan
How NOT to Handle Exceptions Part 2
 
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In this second video, Steven warns against converting exceptions into status codes and placing INSERTs into your error log table directly into your exception section. Related LiveSQL script: https://livesql.oracle.com/apex/livesql/file/content_EHHFC36YW2834RB7Z9OE846C6.html Related blog post: http://stevenfeuersteinonplsql.blogspot.com/2017/02/now-not-to-handle-exceptions.html ======================================== Practically Perfect PL/SQL with Steven Feuerstein Copyright © 2016 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.
SCPT 35: Autonomous Transaction
 
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Oracle Tutorials For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=6 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 14652 Oresoft LWC
Transaction Control Statement
 
27:47
Oracle SQL For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=4 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 4704 Oresoft LWC
TCL save point | sql queries |oracle database 11g version 2 | by bhanu priya
 
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SQL queries on oracle database 11g version 2
Views: 38 Education 4u
PL/SQL tutorial 21: How To Create Startup Trigger In Oracle Database By Manish Sharma
 
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Learn how to create a startup trigger with easy to understand example or startup auditing in oracle database by Manish Sharma RebellionRider.com ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/startup-shutdown-database-trigger Previous Tutorial ► PL/SQL tutorial 20: 'LogOff' Trigger https://youtu.be/l5lcE68xK-k ►PL/SQL tutorial 19: 'LogOn' Trigger https://youtu.be/dJSlgiwt7w0 ►SQL tutorial 46: System Privileges https://youtu.be/EQzdtKPiErU ------------------------------------------------------------------------- ►►►Let's Get Free Uber Cab◄◄◄ Use Referral Code UberRebellionRider and get $20 free for your first ride. ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider 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/ ___Facebook Official Page___ https://www.facebook.com/RebellionRider.official/ You can also Email me at for E-mail address please check About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 21990 Manish Sharma
Difference Between Delete and Truncate
 
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Below is link for Useful Pl/SQL Books http://goo.gl/XMy0tt ---------------------------------------------------------- Difference Between Delete and Truncate in Detail On bigger picture they serve the same purpose but there are many Differences listed with examples Point Delete Truncate 1. Data Recovery Delete: Come under the DML Category, we need to commit or Rollback explicitly to make the changes permanent, so we can recover the data by Rollback command fully with in a session or up to a point if Save Points are used Fall In DDL Category (DDL Command issue the Auto commit implicitly) so no chances of Recovery even not using the Flashback table method. But Truncate operations are also logged , they didn’t generate redo SQL but they are logged , view for truncated data info V$LOGMNR_CONTENTS 2. Data Removal Delete Can remove all or selected data using the Where Clause predicates. Or we can say delete any subset of rows We can Truncate complete table or a partition or sub partition of a table. 3. Speed Delete is Slower because oracle maintain the redo logs for Read Consistency (so that every session connected can see a consistent data at a given point of time ) Delete is very time consuming activity especially when table have numerous indexes and Triggers associated with table Faster as no data logs are maintained no associated trigger firing. 4. DML Triggers Firing DML (Delete) triggers associated with table will fire. DML Trigger will not fire in case of truncate method. 5. Flashback Technology Data can be recovered even after commit operation using Flashback Table options Flashback_transaction_query table will give what to recover and up to which point. Data cannot be recovered in truncate method by Flashback table option. 6. Referential Integrity Constraint Behavior if we don’t have related data in child table then we can delete the data from the parent table or we have variants like On Delete Cascade & on Delete set Null. We can’t truncate a table with enable Referential Integrity Constraint, even there is no data in the child table, we have to disable or drop the constraint if we want to truncate the table. Exception: Truncate is possible if the FK is self-referential means primary key and foreign key are on the same table. 7. Space De allocation or Space Utilization No extent reset with delete when deleting rows from a table, extents are not de allocated, So if there were 50 extents in the table before the deletion, there will still be 50 after the deletion. Truncate: When a table is truncated it will free the space allocated except in case of reuse storage clause. This space can subsequently be used only by new data in the table or cluster resulting from insert or update operations .All extents are de allocated leaving only the extents specified when the table was originally created .Example So if the table was originally created with min extents 3, there will be 3 extents remaining when the tables is truncated. When you truncate a table, NEXT is automatically reset to the last extent deleted. 8. High Water Mark Delete will not reset the high water mark Truncate will reset the High Water mark which is very important for performance point of view as in case of full table scan and full index scan oracle will read all the block under high water mark this makes a lot of difference in terms of performance. 9. Cluster No as such restriction with delete. You cannot individually truncate a table that is part of a cluster. You must truncate the cluster, Delete all rows from the table, or drop and re-create the table. 10. Information Capturing Delete : we can capture the row information what we have deleted using Delete Method, f you are deleting multiple records then use composite data types (collections & records) Truncate Don’t have this feature of capturing the deleted records. 11. Function Based Index Impact DELETE You cannot delete rows from a table if a function-based index on the table has become invalid. You must first validate the function-based index. Truncate: No as such restriction 12. UNUSABLE Indexes Delete no as such feature. Truncate if table is not empty then truncate make all unusable indexes to useable. 13. Complex views You cannot delete data from a Complex view except through INSTEAD OF triggers. But we can delete data from simple Views and MV. We cannot truncate a view simple or complex but you can truncate MV with special Features like Preserve MV Logs and Purge MV Logs. 14. Privileges Delete You need to provide delete table privilege on object. Truncate you must have drop table privilege there is no truncate table privilege exists. 15. Domain Index No as such restriction You cannot truncate the object having domain index in invalid or In progress state
Views: 12670 Ram Gupta
SQL Tutorial : Difference Between Delete  and Truncate in SQL Oracle
 
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SQL Tutorial : Difference Between Delete and Truncate in SQL Oracle SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL SQL Tutorial PL SQL Tutorial for beginners PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 222 TechLake
ORACLE PL/SQL, Control de excepciones 1
 
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En este vídeo comenzamos a estudiar las excepciones en el bloque PL/SQL. Es el primero de una serie de varios, ya que las excepciones precisan de un estudio bastante profundo debido a la complejidad cuando se aniden bloques.
Views: 228 Apréndelo gratis
7. Compile-time warnings help avoid "WHEN OTHERS THEN NULL".
 
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One of Tom Kyte's favorite pet peeves, the following exception sections "swallow up" errors. EXCEPTION WHEN OTHERS THEN NULL; EXCEPTION WHEN OTHERS THEN DBMS_OUTPUT.PUT_LINE (SQLERRM); In fact, any exception handler that does not re-raise the same exception or another, runs the risk of hiding errors from the calling subprogram, your users, and yourself as you debug your code. Generally, you should log the error, then re-raise it. There are certainly some cases in which this advice does not hold (for example: a function that fetches a single row for a primary key. If there is no row for the key, it's not an application error, so just return NULL). In those cases, include a comment so that the person maintaining your code in the distant future knows that you weren't simply ignoring the Wisdom of the Kyte. Example: EXCEPTION WHEN OTHERS THEN /* No company or this ID, let calling subprogram decide what to do */ RETURN NULL; One way to avoid this problem is to turn on compile-time warnings. Then when your program unit is compiled, you will be warned if the compiler has identified an exception handler that does not contain a RAISE statement or a call to RAISE_APPLICATION_ERROR. Related blog post: http://stevenfeuersteinonplsql.blogspot.com/2016/03/nine-good-to-knows-about-plsql-error.html ======================================== Practically Perfect PL/SQL with Steven Feuerstein 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.
Transactions and locking in SQL Server and Oracle (or any sql database)
 
04:44
In this video we explain how database locking works and the scope of database transactions - as the basis for a deeper locking and transactions discussion on migrated code and .NET
Views: 402 FireflyMigration
Oracle || Transaction control statements by Siva
 
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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: 27 chlordk
SQL: Transaction Part-2
 
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In this tutorial, you'll learn what are transaction and nature of transaction. 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: 1429 radhikaravikumar
Laravel's Eloquent Database Transactions
 
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Request a Video Tutorial here: https://www.youtube.com/myPHPnotes/discussion Source Code: https://goo.gl/hvBr1E Learn about Composer: https://www.youtube.com/watch?v=darYWb_Oml0 Learn about Virtual Hosts: https://www.youtube.com/watch?v=iBjirLD5X7Q Brought to you by www.myphpnotes.tk
Views: 2570 myPHPnotes
032-Oracle SQL Arabic Course  - Sequence اوراكل ديفلوبر
 
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Oracle SEQUENCES - Beginner .......................................­.................... تواصل معانا علي الفيس بوك من هنا : https://www.facebook.com/askgad .......................................­.................... تواصل معانا علي موقعنا من هنا : https://www.askgad.com/
Views: 1179 Ask Gad
Oracle SQL Developer Tutorial For Beginners  45  TCL   COMMIT Demo
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 1829 Sam Dhanasekaran
Learn Oracle | How to use the Transactional Control Statements in SQL
 
04:32
Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 85 Pebbles Tutorials
Mule 4 Error Handling
 
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What you need to know about Error Handling in Mule 4 when compared to Mule 3. You can find the related code at https://github.com/MuleMadeEasy/Mule-4-Error-Handling
Views: 397 Mule Made Easy
Oracle SQL Developer Tutorial For Beginners  96   Exception for Inner Single Quotes
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 615 Sam Dhanasekaran
EXCEPTION HANDLING AND EVENT HANDLING IN HINDI
 
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notes-https://viden.io/knowledge/exception-and-event-handling?utm_campaign=creator_campaign&utm_medium=referral&utm_source=youtube&utm_term=ajaze-khan-1
Views: 121 LearnEveryone
100/125 Oracle PLSQL: Creating Triggers / Database Events
 
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Creating Triggers in oracle Database Events Triggers in oracle Learn Oracle PLSQL EXAM 1Z0-144
Views: 467 khaled alkhudari

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