Oracle

One: Install JDK and JRE;(1) There are two ways: 1, install from the official website, 2, install the green version(2) Configuring environment variablesUnder System variables, configure the following:(1) New variable name: Java_home variable Value:

Data export:1 The database test is fully exported, user Name System Password Manager exported to D:\daochu.dmp exp System/[email protected] File=d:\daochu.dmp2 Exporting the system user in the database with the SYS user's table exp system/[email

Recovery Manager (Rman) is a utility provided by Oracle that uses RMAN to back up, restore, restore, and so on to an Oracle database. This program does not need to be installed separately, and as part of the Oracle database, you have the Oracle

These days to install an Oracle database, work needs, start, to the official website to download a latest version of, now is July 30, 2015, ah, the latest is 12g that version, installed a long time not installed on, finally gave up, installed a

When Oracle EBS enters responsibility from the Web interface, it prompts that there is no valid liability available each time the Web interface, click on the function of a responsibility, pop-up form, will prompt the error: Sorry, there is no valid

Create tablespace halfayadb logging datafile ' D:\app\Administrator\oradata\orcl\halfayadb.dbf ' size 50m autoextend on Next 50m maxsize 20480m extent management local;Create user halfayadb identified by halfayadb default Tablespace halfayadb;Grant

A few days ago because of work need I have to the Oracle database dozens of tables transferred to MySQL, because there is no relevant experience, the Internet simple Baidu after choosing Navcat Premium software work.Navcat Premium for data transfer

Data Synchronization Scenarios:--Create a link to the desired synchronization table with Dblink--------------------------------------------------------------------------------------------------Parameters--dblink1 Name--csys User Name--**** User

1. List all departments that have at least one employee. (Two table union queries, and the use of group by...having) Select Dname from dept where Deptno in (select Deptno from EMP GROUP by DEPTNO have count ( *) >1); 2. List all employees who pay

--Three formats for connection queries select Ename, deptno,dname from EMP Natural join Dept;select ename, deptno,dname from EMP Join dept using (DEPTN o); Select Emp.ename, emp.deptno,dept.dname from EMP Join dept on

PHPfunctionQuery ($sql,$prms){ $db= "(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = XXX) (PORT = 1521)) (Connect_data = (SID=ORCL) (SERVER = dedicated) ( service_name = ORCL)) "; $db _uname= "XXX"; $db _upass= "XXXXXX"; $conn= Oci_connect

Http://blog.sina.com.cn/s/blog_601d1ce30100cyrb.htmlThere are two simple examples to illustrate the efficiency issues of "exists" and "in"1) SELECT * from T1 where exists (select 1 from T2 where t1.a=t2.a);When the T1 data volume is small and the T2

1. Under WinXP, install 10g, default selection, all the way OK. (Pre-install self-test with DHCP warning, can be ignored directly)2. Command line, under XP, enter Sqlplus, you can start, login with Sqlplus/as sysdba with admin login3. When restoring

1. Preface　　The company recently MySQL database switch oracle,oracle for a long time useless a little strange, just started to do the paging on the rownum and order by priority comparison. Check the information, the Internet said rownum priority is

the character function character function is the most commonly used function in Oracle, let's see what the character functions are: lower (char): Convert the string to lowercase. Upper (char): Converts a string to an uppercase format. Length (char):

SELECT UPPER(f.tablespace_name) "tablespace name", D.TOT_GROOTTE_MB "table space size (M)", D.TOT_GROOTTE_MB-f.total_bytes "used Space (M)", To_char (ROUND((D.TOT_GROOTTE_MB-F.total_bytes)/D.tot_grootte_mb* -,2),'990.99')|| '%'"Use ratio",

When Oracle EBS enters responsibility from the Web interface, it prompts that there is no valid responsibility available. oracleebsWhen Oracle EBS enters responsibility from the Web interface, it prompts that there is no valid responsibility

ORACLE unlock, table retrieval and program retrieval statements, oracle unlock Recently, my colleagues often encounter lock tables, accidental table deletion, and program overwrite situations. We summarize the solutions for these three situations: 1.

Listparts and oraclelistagg of Oracle Functions Recently, I found a very interesting function in the learning process, which can splice column values. Next, let's take a look at its specific usage. Usage: The official document explains its role as

One-click installation of ORACLE Database creation script I recently learned shell and wrote it for practice. I only posted a part of it and it cannot be used directly. But it can be used as an example. #! /Bin/bashSETPASSWD () {# set passwordexpect-