rollback

oracle| data modifying Data files Important NOTE: Make sure to back up the data before you adjust the work, remember 1, Basic concepts Within the Oracle system, a logical disk space called table space is given. Early systems are used primarily

This article is mainly about the component (Component) mappings in Hibernate, which can be referenced in chapter 7th of the Hibernate official documentation.  As for the environment settings, you can refer to the previous articles in this series.  1.

MySQL version: Mariadb 5.5.30 OS version: CentOS 5.6 x86_64 Excerpt from the network: "Transactions are written in Binlog in the order in which they are submitted, MySQLServer for statements that differentiate threads, a transaction cache for each

The unsafe factors of Oracle8 and some explanations As an outstanding representative of the Object relational database, Oracle is undoubtedly the most powerful. Whether it's the size of the database, the support of multimedia data types, the

Data | database Another error that goes to extremesConfident novices may revel in some of the knowledge they have mastered, and the would-be developers who have just contacted database transaction processing are also complacent about applying the

Access | data | Database MySQL can directly access the database address space, that is, limit, it is directly from the database address space to specify the first few to several, of course, very soon. Oracle itself cannot implement resultset

One, what is a distributed database The Distributed Database System (ddbs:distributed) is developed on the basis of centralized database system. is a combination of database technology and network technology products. There are two kinds of

Physical structure of Oracle and logical Structure view the physical file path of the Oracle database must be viewed with commands, unless you have installed it yourself and have done all the security configuration, it is very likely that your

Today and students to discuss the issue of database transactions, feel the discussion in some understanding, some knowledge has been seen, but no actual use or do not understand. A transaction is a sequence of operations as an atomic operation, or

A asp.net| transaction transaction is a set of database operations that synthesize logical units of work, although errors may occur in the system, but transactions control and maintain the consistency and integrity of each database. If no errors are

Oracle Rollback segment Management is always a difficult problem in Oracle database management, this paper introduces the concept, usage, planning and problem solving of Oracle rollback segment through an example. Rollback Segment Overview The

Physical structure of Oracle and logical Structure view the physical file path of the Oracle database must be viewed with commands, unless you have installed it yourself and have done all the security configuration, it is very likely that your

The Driver Rollback (Driver rollback) feature helps ensure system stability. When you update a driver, the previous version of the driver package is automatically saved to a specific subfolder that is responsible for placing the system files (the

1, view the parameters of the undo section Sql> show parameter undo; NAME TYPE VALUE ------------------------------------ ----------- ---------- Undo_management string AUTO-> changed to Manual Undo_retention Integer 900 Undo_tablespace string

Backup | reference | reference Manual | recovery | data | database | Chinese InnoDB Chinese Reference Manual---canine (heart sail) Translation 6 backup and restore InnoDB database Secure database management is the use of regular data

Data | database Friends familiar with VFP know that in VFP we can use Remote view and SPT (SQL pass through) technology to control remote heterogeneous databases. These techniques are actually the encapsulation of the ODBC API, so it is as easy

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

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

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

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,