rollback

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InnoDB Chinese Reference Manual---2 InnoDB startup options

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 co

Impact of rollback&truncate operations on high watermark in Oracle: Performance optimization

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@

Asp. Transaction processing and exception handling in net

Asp.net| Transaction Handling | exception handling ASP. Transaction processing and exception handling in net Using the exception handling mechanism provided by the Sql-transaction class and. NET, we are able to handle problems in the running of th

Oracle physical structure and logical structure

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 predec

Security Policies for Oracle databases

Security Policies for Oracle databases 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 develop

Oracle DBA Day-to-day management

Oracle Oracle DBA Day-to-day management Modified: 2000/8/23 Author: Thomas B. cox,with Christine Choi Objective: This document has very detailed information on one or more Oracle databases per day, monthly, The results of the yearly running status an

DML and transaction control for getting started with Oracle database

Insert statement Syntax: INSERT into table [(Column1, Column2 ...)] VALUES (value1, value2 ...); Description: INSERT statement inserts a record into the table at a time. When the default field Name

Exchange Disaster recovery whole process

Finally decided to get the mail system again. Because the server often problems, DNS error, SMTP also often problems. Most importantly, because there were only two servers previously, this server acted on several roles (Pdc,isaserver,exchange servers

ASP transaction Processing

When a large number of database inserts, modify, delete and other operations, if you want to implement transactions, you can use the following code. Such as: <%@ TRANSACTION = required%> On Error Resume Next strsql1= "INSERT into a (num) VALUES

Some common techniques in Java database programming

Programming | skills | data | Database 1, JAVA database Operation basic process 2, a few commonly used important skills: Scrollable, updated recordsets Batch Update Transaction processing Java database Operation basic process: Get database conne

How to troubleshoot Oracle ORA-01555 errors

First, understand under what circumstances Oracle will produce ORA-01555 errors: Suppose there is a table1 table with 60 million rows of data, assuming that the full table Scan 1 times takes 2 hours,

MySQL Table type detailed

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 tabl

Eclipse quickly hibernate--4. Inheritance Mappings (1)

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.&

Six experiences in Oracle database system usage

oracle| Data | database The use of a 1.having clause has a clause that controls the group of rows determined by the GROUP BY clause, allowing only constants, clustered functions, or columns in the GROUP BY clause to be involved in the HAVING clause c

Example analysis of MYSQLDB usage in Python

This example describes the use of mysqldb under Python. Share to everyone for your reference. The specific analysis is as follows: Download Installation MySQLdb ①linux version http://sourceforge.ne

Definition of transaction processing

Transaction processing In many large, critical applications, computers perform a number of tasks every second. More often than not, the tasks themselves are combined to accomplish a business requirement, called a transaction. What happens if you can

Oracle Practical Tips

oracle| Tips 1. Find Useless index:    DML performance is low, one of the most serious reasons is the existence of useless indexes. All SQL inserts, updates, and deletions become slower when they need to modify a large number of indexes when each ro

What about undo corruption in Oracle without backup

If Oracle unfortunately encounters undo corruption in operation, the best approach is full recovery, but if there is no backup, you can take an unconventional approach (taking advantage of the hidden

Deep understanding of the PB Data window

PowerBuilder (PB) is a strong development tool based on client/server architecture launched by PowerSoft Company (has been acquired by Sybase), and has been well received by developers since its inception. DataWindow is a patented technology in PB co

Beginner's Primer: Java Database Basic Operations Guide

Data | database Java Database Basic Operations 1. Java database Operation Basic process 2, a few commonly used important skills: • Scrollable, updated recordsets • Batch Update • Transaction Processing Java database Operation basic process: Get datab

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