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sometimes have some headaches when doing projects based on a lower version of Oracle. For example, to perform a current transaction (transaction) consisting of multiple DML, record some information for each step of DML into the trace table, because of the atomicity of the transaction, The submission of these trace information will be determined by the commit or rollback of the main transaction. This makes writing programs more difficult, and programmers have to record them in similar array struc

Label:Introduction to Autonomous TRANSACTION (Autonomous affairs)In the process of doing some projects based on the lower version of Oracle, sometimes there are some headaches, such as the need to record some information to the trace table for each step of DML when executing the current transaction (transaction) consisting of multiple DML, because of the atomicity of the transaction, The submission of these

2014-06-01 Baoxinjian in CapgeminiI. SummaryNested things: Refers to one or more sub Transaction nested within a parent transaction. And the primary transaction interacts with each other, and this transaction is called a nested transaction. With commit as the end of the transactionAutonomy: Refers to the autonomous management of transactions in subprograms such as function,procedure, and when these subprograms are called in other PL/SQL blocks, these

Source from: http://hwhuang.javaeye.com/blog/650903 KeywordsConcepts of nested transactions and autonomous transactionsUse of nested transactionsUse of autonomous transactions1. Concepts1. nested transaction ):It refers to one or more sub transactions nested in a parent transaction, and the primary transaction and its Mutual influence. Such transactions are called nested transactions. Use commit as the end

Operate the table that triggers the trigger in the trigger, and use the Pragma autonomous_transaction option. 15.1 why cannot I roll back an audit using autonomous transactions? Generally, when a trigger is used to prohibit operations such as table update, if a log is logged, the trigger will roll back the log when an exception is thrown. Autonomous transactions can prevent this point. Avoid mutating table

(i) Exploration of the environment under the guidance of the guidance point Through the analysis of the environment and the corresponding information processing, the paper extracts the target point of the guided robot to explore a series of unknown environment completely. Explore the extraction of the guide point: Acquiring the laser data--> extract the moving target point--> explore the decision Tree--> construct a complete or approximate complete environment map in a limited time. A brief int

This article mainly tells you about the definition of DB2 9.7 autonomous transactions and the background of some transactions in their actual operations. We all know how to understand IBM DB2®Version 9.7 for Linux®, UNIX®, And Windows®The autonomous transaction feature introduced in. You will get an overview and examples of autonomous transaction definitions and

Oracle autonomous transactions are stored procedures and functions that can handle internal transactions themselves and are not affected by external transactions and are declared with pragma autonomous_transaction. To create an autonomous transaction, you must use the Pragma autonomous_transaction statement in Pl/sql in the top-level of the anonymous block or in the definition section of a stored procedure,

Operate the table that triggers the trigger in the trigger, and use the Pragma autonomous_transaction option. 15.1 why cannot I roll back an audit using autonomous transactions? Generally, when a trigger is used to prohibit operations such as table update, if a log is logged, the trigger will roll back the log when an exception is thrown. Autonomous transactions can prevent this point. Avoid mutating table

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Tags: Oracle self-ServiceAn autonomous transaction (autonomous transaction) allows you to create a "transaction in a transaction" that can be committed or rolled back independently of its parent transaction. With an autonomous transaction, you can suspend the currently executing transaction, start a new transaction, complete some work, and then commit or roll bac

Trigger implementation is required for processing a business requirement in the project yesterday. The trigger involves triggering table operations after inserting, deleting, and updating. Operations in inserting and updating can be implemented normally, that is, when deleting is used, it is required to update other tables. The updated value is the query operation on the trigger table itself. I have tried the N method to meet the requirement within a limited horizontal range, finally, it was fru

Autonomous transactionsAutonomous transactions are independent transactional operations, and if a transaction rollback is considered, a single trigger must be written to complete theA transaction A is called within another transaction B, and that transaction A is an autonomous transaction, which is removed from the execution of a transaction that is not completed within its session.If the session starts wit

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　　 1. Introduction BGP is a routing protocol between autonomous systems. The Network accessibility information exchanged by BGP provides sufficient information to detect routing loops and make decisions based on performance precedence and policy constraints. In particular, BGP exchanges the network accessibility information of all as paths and executes routing policies according to the configuration information. With the development and growth of the

One or several autonomous transactions can be defined in a transaction (outer transaction. An autonomous transaction can be committed independently without affecting the outer transaction. Similarly, the rollback of the outer transaction does not affect the autonomous transaction.If you have such a requirement, you cannot perform certain operations (such as updat

One use rule: before begin, affirm: PRAGMA autonomous_transaction;Two-use understanding:Autonomous Transaction is an independent transaction, which is understood autonomous transactionThe key, though called by the main transaction. Let's use an example to deepen your understanding. creates a test table, inserts two records into it, does not commit, declares an autonomous transaction, continues to insert re

A database transaction is a unit operation. Either all operations are successful or all operations fail. In Oracle, a transaction starts from executing the first data governance language (DML) statement until it executes a COMMIT statement, commits and saves the transaction, or executes a ROLLBACK statement, stop this operation. It is difficult to record the error information to the database table because the transaction fails to be re-run, the INSERT statement used to write log entries has not

is difficult to record the error information to the database table because the transaction fails to be re-run, the INSERT statement used to write log entries has not been completed yet. To address this dilemma, Oracle provides a convenient method, that is, autonomous transactions. An autonomous transaction starts from the current transaction and runs in its own context. They can be submitted or re-run inde

The Toyota Institute (TRI) presents a boldWright CoinsBlockchain strategy. at the 2017 consensus meeting yesterday, the Toyota Institute unveiled a series of partnerships and published a vision that broadly outlines how blockchain technology can drive the future of the car industry giant. And the Toyota Institute has worked with the MIT Media Lab to study how blockchain can affect car data exchange and even how to support the next generation of autonomous