Oracle

Materialized View, which is used to pre-calculate and save the results of time-consuming operations such as table join or aggregation. In this way, these time-consuming operations can be avoided during query execution, and get results quickly.

1. First, you must understand that the DMP file is imported and exported through the CMD command instead of the SQL plus command. You can also use plsqldev to import and export data. Note that the executable file export selects the exp.exe

Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable{mso-style-name:普通表格;mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-

  A nested subquery is an independent query that is not related to an external query. A subquery is executed only once, then execute the external query. The external query uses the subquery results during execution.The following is an example of a

1. opatch tool description The opatch tool was mentioned in the previous Oracle patch system blog: Introduction to Oracle patch system and opatch tools Http://blog.csdn.net/tianlesoftware/article/details/5809526   Since version 9.2, Oracle has

  My colleague added a field to a table in the test database, prompting ORA-00054, resource busy. The table object lock is not released. For instructions on Oracle locks, refer: Oracle Lock

I. RMAN catalog compatibility Mos file: RMAN Compatibility Matrix [ID 73431.1]  1.1 about RMAN compatibility The RMAN environment can contain thefollowing components: -- The RMAN environment consists of the following five parts: (1) RMAN executable (

Oracle 10g express edition is a free version dedicated to small users. Oracle Xe is very small and easy to install and can be used by third-party software developers to deploy small applications.However, Oracle Xe's current beta2 default

Powerdesigner connects to Oracle to directly generate tables in the database The premise of the configuration is to have an oracle driver installed. If an Oracle server or client is installed, the Oracle driver will be automatically installed.1.

    This test shows how to access a table containing BLOB fields through dblink. For more information about dblink and LOB, see the following link:   Oracle dblink Http://blog.csdn.net/tianlesoftware/article/details/4698642   Remove dblink error ORA-

Introduction In this article, I will examine how to store and retrieve binary files such as image or PDF into ms SQL or Oracle database.Using the code Reading a file into a byte array. Collapse copy code byte[] byteArray = null;using

Java Programmers sometimes need to understand JVM-related parameters, either out of curiosity or work needs. Some parameters are listed in the Oracle document (Click here). Not all parameters are listed, and some parameters are enabled or disabled

Starting from server construction (4). installing and configuring oracle in Linux Papayas20070417 I. Sequencing As early as the Virtual Machine redhatlinux9 installation oralce92 whole process "article, (link: http://blog.csdn.net/liwei_cmg/archive/2

This document creates two database spaces: one for storing data and the other for storing indexes. Note that the index space is small. User: SA, password: liuxuezong, service name: rtsos. 1. Create a service name 2. Create a tablespace File --------

Link: http://www.eygle.com/archives/2008/12/dba20_oem_grid_control.html These days, kamus and Piner respectively wrote some OEM articles.Kamus discusses the application of OEM in the tax industry, and Piner discusses database optimization in the

To simulate the real environment, consider comparing multiple performance indicators in the case of concurrent use of Bound variables and not bound variables. Statspack is used for testing. If this tool is not installed, refer to Oracle9i database

Author: skateTime: 2013/03/04   Record the summary of Oracle R & D skills. If you have any suggestions, please leave a message to add Oracle R & D skills 1. Basic Oracle skills1.1 SQL High Performance Optimization1.2 table design skills2. Advanced

Brief comparison:Replace: String-level replacement For example, select Replace ('acdd', 'cd', 'ef ') from dual; → aefd Translate: character-level replacement For example, select translate ('acdd', 'cd', 'ef ') from dual; → aeff Detailed explanation: 

Java Development, when using Oracle database, often encounter a ORA-01000: maximum open cursors exceeded. Error. In fact, the cause of this error is mainly caused by code problems. Ora-01000: maximum open cursors exceeded. Indicates that the maximum

The local development environment is win2003 + vs2005 + Oracle9i Testing site environment: win2003 + IIS + Oracle10g The password of the local development database account oracleusera orclepassworda and the database name oracledatabasenamea Test the