rollback

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Transaction processing via Ado.net

ado| Transaction Processing Creates a transactional object on a database connection, and then invokes a transaction object to commit the transaction or rollback the transaction. Simple code: private void Button1_Click (object sender,

Flume-ng Source reading: Hbasesink

All the contents of the sink about HBase are under the Org.apache.flume.sink.hbase package. Each sink includes its own custom, all extends Abstractsink implements configurable. First, the Configure (context) method. The method is initialized to

Using open source project Hibernate Develop blog system

The project development tool uses the MYECLIPS3.6, first is establishes the project, the import struts+hibernate package, then configures the SRC and the directory hibernate.cfg.xml. I'm using the MySQL database , So the configuration is as

A brief analysis of the transaction management method provided by spring

The transaction management provided by spring can be divided into two categories: programmatic and declarative. Programmatic, more flexible, but a large number of code, there are more than duplicate code, and declarative more flexible than

Transactions and locks in SQL Server

transactions and locks in SQL Server The transaction is all about Atomicity (atomicity). The concept of atomicity refers to the idea that some things can be treated as a unit. From a database standpoint, it refers to the smallest combination of one

Constraints on MySQL Invalid data

Before MySQL 5.0.2, MySQL was not strict about illegal or improper values, and it also forced them into legal values for data entry. In the MySQL 5.0.2 and later versions, the previous default behavior is retained, but you can choose a more

Oracle interview questions and answers easy answer to the interviewer

This article originates from: http://www.dbasupport.com The answer here is not very comprehensive, these questions can be explained through a number of angles, perhaps you do not have to give a full answer in the interview process, only through your

Implementing Database Transactions with Microsoft.NET (iv)

Data | Database attached A: Introduction to the transaction A transaction is a series of actions executed as a single logical unit, which means that the actions are either all successful or fail altogether. If the last action fails, the previous

Comprehensive analysis of Oracle database security Policy

oracle| Security | strategy | data | database Oracle is a relational database management system, which has powerful function and excellent performance, and occupies an important position in today's large database management system. In the MIS system

Using autonomous transactions to implement audit functions in Oracle

You can define one or several autonomous transactions in a transaction (outer transaction). Autonomous transactions can be commit independently and do not have an impact on external affairs, and the rollback of the same outer transaction has no

Ways to understand how frequently SQL is executed

Once the MySQL client connection succeeds, the show [session|global]status command can provide server status information, or you can use the Mysqladmin extended-status command on the operating system to obtain these messages. Show [Sessionglobal]

Building an e-business application with PHP4 and PostgreSQL

E-commerce This paper demonstrates the application of PHP and Postgressql in e-commerce through a simple Web application. Not long ago, if a serious web application was to be structured, it meant buying expensive cold Fusion licenses and a

Aliyun How to use the rollback disk interface

  Roll back Disk Describe Rolls back the contents of the disk using a snapshot of the specified disk itself. This action can only be performed if the instance state must be Stopped. The disk status must be in use (In_use) in order to perform

Oracle's ORA-01562 and ORA-01628 problem resolution

Execute a pair of billing program, the old execution to half of the time error, the author has not yet to print out Oracle error, just printed his own can understand the error hint, after the revision code, the Oracle error, put_line out, found to

A PHP MySQL operation class ...

Use examples: save (' table_1 ', $row); Update $db->update (' table_1 ', $row); Delete $db->remove (' Table_1 ', 1); Query $rows = $db->find ($sql, ' id ') ?>

. Foreign key conflict detection before deleting data in net

The easiest and safest way to ensure the consistency of data in a database system is to establish a foreign key constraint in the DBMS, but if the foreign key constraint is violated when the primary key data is deleted, the DBMS will give you the

Oracle database table Space Recovery scheme

oracle| Recovery | data | database First, user table space Error: ORA-01157,ORA-01110 or operating system-level errors such as ORA-07360 when you start the database will cause an error immediate when you close the database (using shutdown normal or

Weigh Apache Geronimo EJB transaction options, part 2nd: Bean Management Transactions

Now that you have learned all the details about the transactions managed by the Enterprise JavaBeans (EJB) container in part 1th, you may be curious about the transactions managed by the EJB bean and how you can implement it in the Apache Geronimo

Elements of SQL

1. Pattern objects A pattern is a collection of data logical structures or schema objects (schema object) that is owned by a database user with the same name as the user name. The pattern object is created and manipulated by SQL and contains the

Oracle Database 10g: Best New Features (second week: rollback monitoring)

Oracle Week 2nd: Rolling back monitoring How much longer will it take? : Rolling back monitoring Provide users with an accurate assessment of rollback operation time Are we still in this place? How much longer will it take? Does it sound

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