Oracle

Transfer from http://blog.csdn.net/huanghm88/article/details/8009048There are not many grammatical differences between Oracle and MySQL in the database, but there are some. Here are some references:1,oracle no offet,limit, in MySQL we use them to

In Oracle databases, there are times when we might encounter the term: Ash and awr, so how do they happen? What is their role? In this article, we will introduce this part of the content.1.10g agoThe user's connection will generate a session, the

1.Sequence 1.1 What is Sequence?Sequence is an object provided by Oracle for generating a self-growing primary key. This is similar to the identity of SQL Server. From a mathematical standpoint, it is a arithmetic progression, seen in 1.2. 1.2

The processes in Oracle are divided into three categories: User processes, service processes, background processes. The background process with the start of the instance started, they are mainly to maintain the stability of the database, the

In Oracle's stored procedures, DDL statements, such as CREATE, alter, DROP, truncate, and so on, cannot be used directly.So if we want to create a temporary table in a stored procedure, we can only use dynamic SQL statements:Create or replace

Three ways to create a new Oracle database:1. Create a configuration or delete a database by running the Oracle database configuration Assistant (you can also enter DBCA at the command line);2. Create a database using the command line method3.

Link navigation in this series:[Lone solitary Nine swords] Oracle Knowledge Point Grooming (a) table space, user[Lone solitary Nine swords] Oracle Knowledge Point Grooming (ii) connection of databases[Lone solitary Nine swords] Oracle Knowledge

Link navigation in this series:[Lone solitary Nine swords] Oracle Knowledge Point Grooming (a) table space, user[Lone solitary Nine swords] Oracle Knowledge Point Grooming (ii) connection of databases[Lone solitary Nine swords] Oracle Knowledge

Link navigation in this series:[Lone solitary Nine swords] Oracle Knowledge Point Grooming (a) table space, user[Lone solitary Nine swords] Oracle Knowledge Point Grooming (ii) connection of databases[Lone solitary Nine swords] Oracle Knowledge

In a highly available system, if you need to change the definition of a table is a tricky issue, especially for 7x24 systems. The basic syntax provided by Oracle basically satisfies general modifications, but it is not possible to change an index

Forward: http://www.linuxidc.com/Linux/2012-02/53974.htmImplementation results: Write a stored procedure under a user in a database, use Dblink to connect to another database in a stored procedure, take a number from a user in the database, and then

1, SavePoint (set up the savepoint, used to roll back to the savepoint when the error)Establish the savepoint A1:savepoint A1;............................ [A lot of things were done in the meantime]Then establish the preservation point A2:savepoint

Foreword: All of the following operations are based on the successful installation of the Oracle database and the Java development environment in a normal situation.If not, configure the underlying environment first.First step: Configure the

one character in Oracle, especially Chinese characters, takes up a few bytes in relation to a character set. For example GBK, Chinese characters will account for two bytes, English one, if it is UTF-8, Chinese characters generally accounted for 3

Sequence of OracleSequence IntroductionA sequence is a database object provided by Oracle to produce a series of unique numbers. Use sequences to automate the generation of primary key values. Sequences can also be used in many user concurrent

first, the unloading of the original databasethe database unloading is not much to say, talk about the process: 1. Execute Oracle Uninstall and uninstall Oracle Products2. Delete all Oracle related items under regedit3. Restart the machine4. SC

Oracle & #39; basic concepts of sBusinessIntelligenceApplicationsConfigurationManagerOracle's Business Intelligence Applications Configuration Manager: BIACM Once the BIAPPS installation is completed, the newly introduced web-based JAVA

Oracle check ConstraintsA check constraint is a check constraint. When a check constraint is used, each input data is checked. Only records that meet the conditions are saved in the table, this ensures Data Validity and integrity.Check constraints

How to start Oracle Database Service in Windows Sometimes we may encounter database connection failures. Of course, there are many reasons for this problem, one of which is because the database service is not started. The following describes how

Oracle startup, tablespace creation, user, authorization, Database Import and Export tutorial The most basic operation of a database is to import and export data and create tablespaces, users, and authorizations, today, we will also introduce the