How to connect Oracle database using Python?

To connect to an Oracle database using Python, you need to use the cx_Oracle module. This module provides a Python interface for connecting to an Oracle database and manipulating the data within it. To use the cx_Oracle module, you will first need to install it on your system. You can do this using the following command:

pip install cx_Oracle

Once the module is installed, you can use it to connect to an Oracle database by creating a connection object. This is done using the connect() function, which accepts several parameters for specifying the details of the database connection. Here is an example of how to create a connection object:

import cx_Oracle

# Replace username, password, and database_name with the appropriate values

username = 'your_username'

password = 'your_password'

database_name = 'your_database_name'

# Create a connection object

connection = cx_Oracle.connect(username, password, database_name)

Once you have created a connection object, you can use it to execute SQL statements and manipulate the data in the Oracle database. For example, you can create a cursor object using the cursor() method of the connection object, and then use the cursor to execute a SQL query and process the results:

# Create a cursor object

cursor = connection.cursor()

# Execute a SQL query

cursor.execute('SELECT * FROM employees')

# Process the results

for row in cursor:

print(row)

# Close the cursor and connection

cursor.close()

connection.close()