Oracle

The data used for the test is the EMP table in Scott/tiger mode:We use the job and sal two column tests:The above statement refers to the job placement group (partition by job) and then ranks within each group by salary (SAL). Notice the

can see "Red Hat5 Installing Oracle 11gR2"(http://blog.csdn.net/johnnysun2015/article/details/45022119 ) this article. 1. Stop the Oracle DatabaseSql> Showdown Immediate2. Stop Monitoring and EM[[email protected] ~]$ Lsnrctl stop[Email protected] ~

The Oracle database has just been installed today, the latest Oraclexe112_win32Read the video of the Wisdom podcast, learn Oracle Create users and assign permissions to users, revoke permissions3 Default UsersSYS change_on_install (password inside

A: First talk about the optimization of the database1. Max functions are slow to run; now replace them in the following wayA; the use of the Max function; Get the latest operation time of a row of employee records-----------slow;SELECT *From [email

as follows, table A is a table that already exists in the database, and B is a table that is ready to be copied from table A:1. sql that replicates only the table structureCREATE TABLE B as select * from a where 1<>12. sql that replicates the table

#!/bin/shCat /etc/sysconfig/networkNetworking=yesNetworking_ipv6=noHostname=dbEofHostname DBCat /etc/hosts127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4:: 1 localhost localhost.localdomain localhost6

/*divided into four steps*//*1th Step: Create a temporary table space*/Create Temporarytablespace user_temp tempfile'C:\app\ORACLE\oradata\orcl\user_temp.dbf'size 50m Autoextend on Next50m maxsize 20480m extent management local; /*2nd Step: Create a

1. Create a Java Stored ProcedureCreate or replace and compile Java source named "Testhello" Aspublic class testhello{public static void Test () {Syste  M.out.println ("Hello"); }}2. Create a JSP call stored or method (this example is saved in a

I. Business ScenariosBusiness processes require a comparison of writes and updates, so there are both the original table and the history table.ID uniqueness in the request table, and ID Association of two tables, and subsequent possible database

Because Oracle does not have a for WIN7 version, you must download the for VISTA_W2K8 version, extract the Oralce 10G installation image to the hard disk, and then modify the Rehost.xml and Oraparam.ini two files in the installation directory.I.

Reprint: http://database.51cto.com/art/201009/228094.htm1. Inner connection (natural connection)2. External connection(1) Left outer connection (the table on the left is unrestricted)(2) Right outer connection (no restriction on the right table)(3)

Chapter One the work of the database administratorUp: The DBA must actively participate in the development phase of the system, understand the flow of data throughout the application system, and provide appropriate advice to maximize the

Oracle introduced the merge command in 9i,With this merge you can perform inserts and updates operations on a table in one SQL statement at the same time. Of course update or insert is based on your specified conditions, Merge into can be used to

How to select database management system products Database Management System (DBMS) is the core part of enterprise operation and analysis systems. Data is like blood for enterprises, while database management systems are hubs for smooth data flow.

SDOUG -- Oracle Shandong user group was set up About SDOUGSdoug membership program, also known as the Oracle Shandong user group (SDOUG), was jointly launched by GE yunjie, Yang Yunlong, and ban yanliang, it aims to recognize and recognize those who

ORA-04063: view "SYS. DBA_REGISTRY" has errors, databasehaserrors After RMAN restoration (from 10.2.0.4.0 32bit to 10.2.0.4.0 64bit) is performed in the test environment, the following error is reported when you query the dba_registry System View.

How does a function return a result set in Oracle? In Oracle, function return result sets are sometimes used. The following is a demo: create or replace type t_test as object(id integer,create_time date,object_name varchar2(60));create or replace

Oracle redo log maintenance and oracleredo log Environment OS: Red Hat Linux As 5 DB: 10.2.0.1   1. add the log group alter database add logfile group 4 ('/u01/app/oracle/oradata/logs L/redo04.log') size 50 m; 2. add a log group (specified log

Article Title dual table usage in Oracle Database I. business scenarios The business process needs to be written and updated, so there are original tables and historical tables.The table ID must be unique and the IDs of the two tables are

[Reprinted] basic Oracle knowledge and basic oracle knowledge I. oracle Installation Process Ii. sys and system users (1) The sys user is a super user with the highest permissions, The sysdba role, and the create database permission. The default