Oracle

. Partial SQL Statement Differences(1) Sql:select top * FROM tableOra:select * FROM table where rownum(2) Sql:select * from T1 join T2 on T1.C1=T2.C1Ora:select * from T1,t2 where t1.c1=t2.c1(3) SELECT * from T1 LEFT join T2 on T1.C1=T2.C1Ora:select *

Create user Mchis profile ' DEFAULT ' identified by ' mchis#150 ' account unlock;grant dba to Mchis;Modify one of the Mchis (user name) mchis#150 (login password) Mchis (with user name consistent, function as authorization) This

1, download MYSQL-CONNECTOR-ODBC, and install2. Windows: Control Panel, administrative Tools, data source (ODBC)->ODBC Data Manager, System dsn-> add->mysql ODBC Driver->data Source Name (for example:mysql_data)DescriptionTCP/IP server (server

Learned the simplest kinds of statements, but also installed a few times the database, was looking at that high-level programming, but there is a primer did not see, and then read the first to say,More practice, familiar with the most basic

This article begins with an example of a family financial database of three families, which describes the function and development of Essbase. To illustrate the management and development process of the EPM application, it is possible to use EPMA

Installation Environment:Source:OS:redhat 6.3db:11.2.0.4 Racogg:11.2.1.0.1target:os:redhat 6.3db:11.2.0.4ogg:11.2.1.0.1RAC to a single transport configuration, where the test ogg is not put into the shared storage. It is recommended that the

If you are an architect, in addition to the selection of technology in the database selection, more important may be cost-effective choice, and Oracle is now ranked first in the database, so the price of Oracle is necessary to understand.Several

Http://database.51cto.com/art/201004/196538.htmThe following article mainly introduces the Oracle database exp IMP to export the import related instance according to the relevant user, the first step is to export all objects about Test1 This user

In $oracle_home/bin, there are two scripts, Dbstart and Dbshut, that enable Oracle to boot from the two Oracle-brought scripts. This script contains Oraclelistener, instance, ASM instances start-up, and the same dbshut is the role of the shutdown

Oracle data import and export imp/exp is equivalent to Oracle data restore and backup. The EXP command can export data from a remote database server to a local DMP file, and the IMP command can import the DMP file from a local to a distant database

To start and shut down a database, you must log in as a user with Oracle Administrator privileges , typically logged in as a user with SYSDBA permissions. Generally we use the SYS user to start and close the database with a SYSDBA connection. Here

1. View the name and size of the table spaceSelect T.tablespace_name, round (SUM (bytes/(1024*1024)), 0) ts_sizeFrom Dba_tablespaces T, Dba_data_files Dwhere t.tablespace_name = D.tablespace_nameGroup BY T.tablespace_name;2. View the table space

OracleLinuxServer7 Installing Vmwaretools issues#./vmware-install.pl times wrong:#-bash:./vmware-instal.pl:/usr/bin/perl:bad interpreter:no such file or directoryReason:The Perl environment is not installed.Workaround:Install Perl in the Yum

After installing the Oracle 10g R2 in CentOS 6.3, after rebooting, you will find that Oracle does not boot itself, which is normal, because the installation of Oracle under Linux does not start on its own, you must set the relevant parameters, First

Comprehensive Static Analysis of database deployment I spent most of my tech career in startups. I like fast-paced opportunities to learn new things and the sense of accomplishment of bringing a new product into the market. My career started with

Install Goldengate On Oracle Rac 11.2.0.4 Installation environment:   source:OS：redhat 6.3DB:11.2.0.4 racOGG:11.2.1.0.1target:OS:redhat 6.3DB:11.2.0.4OGG:11.2.1.0.1 A single data transfer configuration from rac to a single machine. The ogg test is

Explain the Oracle Database options in one sentence The importance of databases to enterprise IT systems does not need to be repeated. Since its launch, Oracle database has been a leading technology leader in the industry and has joined hands with

How to Set auto-increment primary keys in oracle First, you must have a table! Create table example (ID Number (4) not null primary key,Name varchar (25 ),Phone varchar (10 ),Address varchar (50 ));If you have any questions about the preceding table

Use alter index ××monitoring usage; statement to monitor the index usage, altermonitoring With the accumulation of time, in the absence of good planning, the database may have a large number of indexes that are not used for a long time. If you can

Oracle11gOEM unable to connect to the database instance Solution My computer is 32-bitWin7 family EditionSystem, can such a system be installed with oracle? Yes! An error may occur. When installing oracle, everyone encounters different problems.