rollback

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, System.EventArgs e) { SqlConnection conn

Transaction processing in the development of Web applications, there is no exception to the need to access the database to complete the query, insert, UPDATE, delete and other operations. Influenced by the application logic, it is sometimes

Client| Data | When the database uses ado.net, each database operation must set connection properties, establish connection, use command, transaction processing, etc., more cumbersome, there are a lot of duplication of work. Can you put these

oracle| Data | database In the case of sun cluster dual-machine switching, accidental power outages, or other situations where the shared disk is not mount, it is necessary to use FSCK to repair the shared disk. After the repair completes, in the

In. NET 1.x, we basically implement transactions that are accessed by different databases through ado.net.. NET 2.0 to bring a new transaction programming pattern, because all transaction components or types are defined in the System.Transactions

The system will be changed during the Windows Vista upgrade process, and the computer is in an unstable state for most of the duration of the process. If the installation is not complete or the upgrade fails, you can use rollback to automatically

oracle| problem Oracle Common fool question 1000 Q (ix) Author: ccbzzp 9I-managed v$ view. 401. V$pq_tqstat Contains statistics on parallel execution operations. Helps to measure imbalances in a query. 402. v$process Contains information

Transactions are the basic unit of database operations in Oracle 9i, and 3 transaction control commands can be used in pl/sql programs. Commit command A commit is a transaction commit command. In Oracle 9i databases, in order to ensure data

Reduce disk IO IO for distributed disks 1, the table space using local management, the file spread to different devices 1 separate the data file from the log file 2 Reduce server-independent disk IO 3 Evaluate the use of bare equipment 4)

Data | Database 1, JAVA database Operation basic Flow 2, a few commonly used important skills: Scrollable, updated recordsets Batch Update Transaction processing Java database Operation basic process: Get database connection-Execute SQL

This article provides an open source JavaScript library that provides the ability to add bookmarks and fallback buttons to AJAX applications. After completing this tutorial, developers will be able to get a solution to the problems encountered in

Active|activex| control |activex| controls have a large number of people who understand ASP (Active Server Pages), but few people can easily invoke ActiveX controls with ASP; If you do not invoke an ActiveX control, It can be said that Microsoft

Error | Troubleshoot symptoms: The database could not be started or the cluster system could not switch. View database log Files $oracle_base/admin Orcl/bdump/alert_orcl.log has similar ora-01599:failed to acquire rollback Segment (in), Cache space

　　Aliyun How to roll back a disk If there is a problem with the current system, and you want to roll back data from one disk to a previous point, you can roll back the disk implementation, provided that the instance has a snapshot. 　　Note : After

Package com.pmjava.jdbcdb; Import Java.io.PrintStream;Import java.sql.*;Import java.util.Properties;Import Javax.sql.DataSource; public class Dbconnect{ private static DataSource DS;Private Connection Conn;Private Statement stmt;Private

    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,

MySQL provides us with a lot of table types to choose from, there are MyISAM, ISAM, HEAP, BerkeleyDB, Innodb,merge table types, radish cabbage is not false, but the real choice of what kind of table type or to see business needs ah, Each type of

Inherit the eclipse quick-start hibernate--1 before. Three articles, such as getting started, have already talked about getting started with hibernate and using tools to create them. This article is mainly about the inheritance mapping in Hibernate. 

Test 1. Create a user leonarding and grant DBA authority Sys@leo> create user leonarding identified by leonarding default tablespace users; Sys@leo> Grant DBA to leonarding; 2. Create a T-table, as long as the structure of information Sys@leo>

Reference Manual | Chinese InnoDB chinese reference Manual---Dog dog (heart Sail) Translation 2 InnoDB startup options In order to use the InnoDB table in mysql-max-3.23, you must specify the configuration parameters in the [mysqld] section of the