Oracle

Oracle partition option is a technology used to process super large tables. Partitioning is a "divide and conquer" technology. By dividing large tables and indexes into small pieces that can be managed, you can avoid managing each table as a large

The previous chapter briefly introduces how to install the odac plug-in for Oracle. This chapter describes how to use EF's dbfirst Database Table Id Primary Key, itempriceid, and inclumentid3 fields are of the number (20) type. The following

Since all the Oracle 11g instances are installed on the machine, the machine is too stuck. Therefore, uninstalling the Oracle instance and installing the client are obviously effective. First, go to the official website to download the Oracle 11

Objective: using Oracle Automatic Memory Sharing Management is basically a modification process. Leave a message if you want to sort it out.   SQL> show parameters target; Name type

During the project transformation, the paging data written by the original colleague is to query all records from the database and then to the paging data. Now, the paging data is transformed to dynamically querying the split pages and the number of

Rs. Open SQL, Conn, a, BA: Adopenforwardonly (= 0)Read-only, and the current data record can only be moved down Adopenkeyset (= 1)Read-only, the current data records can be freely moved Adopendynamic (= 2)Read/write: The current data records can

The Table Partitioning function of Oracle brings great benefits to various applications by improving manageability, performance, and availability. In general, partitions can greatly improve the performance of some queries and maintenance operations.

Server: Database Character Set: ZHS16GBK Database country character set: AL16UTF16 Client: NLS_LANG: AL32UTF8 Environment variable:ORA_NCHAR_LITERAL_REPLACE =TRUE   This character set changes the client NLS_LANG and environment variables. If no

1. Decode Function This document describes how to use it. SELECT id, name DECODE (flag, '1', 'true', '0', 'false', NULL, 'none', 'invalid ') FIELD | determines the field value and displays the specific meaning | Default Value FROM UserInfo; Decode (

What is an index?　　 An index is an auxiliary object created in one or more columns of a table. It aims to accelerate access to data in the table; 　　 The data structure of the Oracle storage index is B * tree, and the same is true for the bitmap

The following content is taken from the http://yangtingkun.itpub.net/post/468/26696 I. USE_NL (nested loop connection) In nested loop connections, Oracle reads the first row from the first row source and compares it with the data in the second row

Detailed description of the SRVCTL command in ORACLE RACIntroduction: SRVCTL is a tool for managing the configuration of ORACLE9i RAC clusters. This document describes all the commands of SRVCTL in detail.Target Audience: ORACLE9i RAC Database

1. View Control File Information SQL * Plus: Release 9.2.0.1.0-Production on Saturday January 5 10:12:00 2008 Copyright (c) 1982,200 2, Oracle Corporation. All rights reserved. SQL> conn sys/as sysdbaEnter the password :*****Connected.SQL> select

The 11g contains a very useful new feature that supports data perspective. In short, it can convert between a wide table and a narrow table. For example, A table records the scores (A, B, C, D, E) of all the students in the school ), now we want to

4. AccessOracleProcess/function (1) Stored procedures are often used when SQL Server is used as a program,OracleYou can also use the process or function.OracleThe process does not seem to have a return value, and the function that has a return value

Install oracle in linux: Oracle claims that the installation of Oracle9i Database in Linux requires at least MB of memory and at least 1 GB or twiceSwap space with a memory size. For servers with a system memory greater than 2 GB, the swap space can

1. sqlplus cannot be started in linuxProblem description:[Root @ localhost oracle] # su-oracle[Oracle @ localhost oracle] $ sqlplus "as/sysdba"-Bash: sqlplus: command not found[Oracle @ localhost oracle]

If oracle prompts ERROR-ORA-12541: TNS: No listener, follow these steps because your assigned address is incorrect. View the \ oracle \ product \ 10.2.0 \ db_1 \ network \ admin \ tnsnames. ora file, open it in notepad, and display the oracle value:

The 9i/10g of Oracle has gradually simplified memory management, while the 11g has gone further and introduced a new concept.Automatic Memory Management (AMM). If the DBAIf you really want to be lazy, you only need to set two parameters to give away

I. In, out, and in out modes In Oracle, procedures and functions can both have parameters. The parameter type can be specified as in, out, or in out. The three parameters are described as follows: (1) in Mode In mode is passed by reference. During