Oracle

Oracle Management, Backup and recoveryThe user who manages the database is the SYS, system, which can compare SYS to the chairman and the system to the general manager, the difference between the following1, the most important difference, the

A String typeThe string data type can also be divided into fixed-length types (char/nchar) and variable-length types (VARCHAR2/NVARCHAR2) based on storage space.Fixed length: means that although the input field value is less than the limit length of

Recently the computer changed to Mac, a lot of software and win is not the same, is slowly adapting to the original client connection Oracle is PL/SQL develop, the egg is not the Mac version,Use the Navicat, the specific settings are as follows1.

Today I wrote a Java class connection to Oracle, which throws this issueJava.sql.SQLException:No suitable driver found for JDBC:ORACLE:THIN:@127.0.0.1:1521:ORCL;is clearly a URL error, have encountered similar problems before, so summarize

public static void Insertwithlob (OracleConnection conn){if (conn!= NULL && conn. state = = ConnectionState.Open){Try{String sqltext = "INSERT into Tb_nclob (Id,name,text) VALUES (1, ' Test ',: Text)";using (oraclecommand cmd = new OracleCommand

This article transferred from: http://www.cnblogs.com/ycdx2001/p/3502495.htmlWithTempAs(Select‘China' Nation,‘Guangzhou' CityFrom dualUnionAllSelect‘China' Nation,‘Shanghai' CityFrom dualUnionAllSelect‘China' Nation,‘Beijing' CityFrom

Principle One: Note the connection order in the WHERE clause:Oracle uses a bottom-up sequential parsing where clause, according to which the connection between tables must be written before other where conditions, and those that can filter out the

The Oracle comparison string is based on the ASCII code, the first letter of the ASCII size comparison if the equivalence is then compared to the next, and so on. The manipulation of strings and numbers is reported as unusual, because different

A. User Name System Password Manager export to D:/daochu.dmpB. Exporting the system user in the database to the SYS user's tableC. Exporting tables in the database inner_notify, Notify_staff_relatD. Export the field in table Table1 in the database

1, install the Oracle 10g database and create the same instance of the database you want to recover (note: It is best to install a new database, and install the database as much as possible with the version of the database to be restored, and the

Oracle gets the current date and date formatGet system Date: Sysdate ()Formatted Date: To_char (Sysdate (), ' Yy/mm/dd HH24:MI:SS)or To_date (Sysdate (), ' Yy/mm/dd HH24:MI:SS)Formatted number: To_numberNote: To_char converts a date or number to a

-----Create tablespace----------Create Tablespace BdccsLogging datafile ' D:\oracle\product\10.2.0\oradata\bdccs\bdccs.dbf 'Size 50mAutoextend onNext 50m maxsize 20480mExtent management Local;-----Create user-to-table spaces------------------Create

1. Change the table name and field name to uppercase see-http://www.cnblogs.com/wenboge/articles/4121331.html2. Change the table name and field name to lowercase① change table name to lowercasebegin forCinch(SelectTABLE_NAME TN

Directory Directory Objective Oracle's architecture Oracle RDBMS Frame composition Storage structure Physical Structure Data Files Redo Log Files Control Files

1. Installing the JDK2, installing Orabbixwget HTTP://WWW.SMARTMARMOT.COM/DOWNLOADS/ORABBIX-1.2.3.ZIPMKDIR/OPT/ORABBIXMV Orabbix-1.2.3.zip/opt/orabbixcd/opt/orabbixunzip orabbix-.1.2.3.zip 3, authorized chmod +x/opt/orabbix/run.shchmod +x/

"Common interview questions Summary catalogue >>>"001 Database Paging QuerySELECT * FROM (Select T.*,rownum from table1 t where condition)where Rownum> (pangeNow-1) *pagesize and rownum002 Business ConceptsAnswer: A transaction is a mechanism that

Http://www.cnblogs.com/qinpengming/archive/2013/06/08/3127346.html1, what is ODF. NE,? Oracle data Provider is specifically written for. NET (odp.net), one for the Oracle Access API for Microsoft. NET environments.Detailed explanation

I. RAC background processLmon:lock Monitor Processes is also known as the Global Enqueue service monitorMonitor the entire cluster condition, maintain the memory structure of GCS monitor abnormal terminated processes and instances when an instance

You need to convert the lowercase amount to uppercase when you print the contract report for EBS Development.Here is the conversion function I wrote myself.The main idea: first get the decimal position, in the distinction between integer and decimal

Select table_name from User_tables; Tables owned by the current user select table_name from all_tables;//Table of all users select table_name from Dba_tables;//Includes system table Select table_name FR Om dba_tables where owner= ' user name '