Howto Archives - Oracle Enterprise

How do I perform basic SQL queries in Oracle?

To perform basic SQL queries in Oracle, you will need to connect to the Oracle database using SQL*Plus or another SQL client tool and then enter SQL commands to interact with the database. Here are some basic SQL commands that you can use in Oracle: SELECT * FROM employees; INSERT INTO employees (first_name, last_name, hire_date) VALUES ('John', 'Doe', '2022-01-01'); UPDATE employees SET salary = 40000 WHERE employee_id = 1001; DELETE FROM employees WHERE employee_id = 1001; These are just…

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How do I connect to an Oracle database using SQL*Plus?

To connect to an Oracle database using SQL*Plus, you will need to have the following information: Once you have this information, you can connect to the Oracle database using the following steps: sqlplus username/password@//hostname:port/sid Replace "username" with your Oracle username, "password" with your Oracle password, "hostname" with the hostname or IP address of the server…

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How to create a Database in Oracle

To create a database in Oracle, you will need to do the following: CREATE DATABASE my_database USER SYS IDENTIFIED BY password USER SYSTEM IDENTIFIED BYpassword LOGFILE GROUP 1 ('/path/to/logfile1.ora') SIZE 50M, GROUP 2('/path/to/logfile2.ora') SIZE 50M DEFAULT TABLESPACE my_tablespace DATAFILE '/path/to/datafile.ora' SIZE 200M CHARACTER SET AL32UTF8 NATIONAL CHARACTER SET AL16UTF16 EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO; This command creates a database named my_database with a default tablespace my_tablespace and a datafile located at /path/to/datafile.ora. It also sets the character set and national character set for…

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