Way to create a New database In Oracle

Any person can create a oracle database in two fashion.
1. Using DBCA ( Database Configuration Assistant )
2. Manually

1. Using DBCA: It is a utility provided by oracle and it is present in the $ORACLE_HOME/bin directory. It is a GUI utility and OUI ( Oracle Universal Installer ) installs the software it's normally run this DBCA to create the database.
You can also explicitely run this utility to create database.

2. Manually: You can create database manully using scripts. I am giving an example of creating database using scripts. For this you have to set some veriables.

First run the following command

sqlplus /nolog

Then the following command one after another.

CONNECT SYS AS SYSDBA;
ALTER SYSTEM SET DB_CREATE_FILE_DEST = ‘/user1/oracle/’;
ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_1=’ /user2/oracle/’;
ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_2=’ /user3/oracle/’;


Then run the following command or script

CREATE DATABASE oradba CONTROLFILE REUSE
LOGFILE
GROUP 1 ('/oracle/oradba/log01a.log', '/oracle/oradba/log01b.log') size 50M,
GROUP 2 ('/oracle/oradba/log02a.log', '/oracle/oradba/log02b.log') size 50M,
GROUP 3 ('/oracle/oradba/log03a.log', '/oracle/oradba/log03b.log') size 50M
DATAFILE
'/oracle/oradba/system.dbf' 250M
AUTOEXTEND ON MAXSIZE 500M
UNDO TABLESPACE undots
DATAFILE '/oracle/oradba/undots.dbf' 50M
DEFAULT TEMPORARY TABLESPACE temp
TEMPFILE '/oracle/oradba/temp.dbf' size 75M
EXTENT MANAGEMENT LOCAL
CHARACTER SET US7ASCII
MAXLOGFILES 10
MAXLOGMEMBERS 10
MAXLOGHISTORY 1
MAXDATAFILES 500;

The database named oradba will be created.

Steps to Become Oracle Certified 11g for Database Administrator

Steps to Become Oracle Certified 11g for Database Administrator



Product: Oracle Database 11g

Associate: Oracle 11g DBA OCA
EXAMS: 1Z0-007 Introduction to Oracle9i SQL
or
1Z0-047 Oracle Database SQL Expert
or
1Z0-051 Oracle Database 11g: SQL Fundamentals I

+ Oracle Database 11g: Administration I 1Z0-052

Professional: Database 11g Administrator Certified Professional
TRAINING: Complete one of the approved instructor-led online or in-class courses.

Oracle9i Database Administrator Certified Professional
Oracle Database 10g Administrator Certified Professional
Oracle Database 10g Administrator Certified Master
Oracle Database 11g Administrator Certified Professional
Oracle Database 11g Administrator Certified Master
Oracle Database 10g: Real Application Clusters Administrator Certified Expert
Oracle 10g: Managing Oracle on Linux Certified Expert
Oracle Database 11g Performance Tuning Expert

EXAM: Oracle Database 11g: Administration II 1Z0-053
FORM: Submit the Hands On Course Requirement Form