Stored procedures in Oracle are database objects that contain a collection of pre-compiled SQL and PL/SQL (Procedural Language/Structured Query Language) code. They are stored within the Oracle database and can be executed on demand.
cx_Oracle moduleEnsure that you have the cx_Oracle module installed in your Python environment. You can install it using pip:
pip install cx_Oracle
Import the cx_Oracle module and any other necessary modules in your Python script:
import cx_Oracle
Create a connection object to establish a connection to the Oracle database. We’ll need to provide the necessary connection details, such as the host, port, service name, username, and password:
connection = cx_Oracle.connect(user="your_username",password="your_password",dsn="your_host:your_port/service_name")
Create a cursor object using the connection. The cursor allows you to execute SQL statements and retrieve results:
cursor = connection.cursor()
Define a variable to store the return value of the stored procedure. Then, execute the stored procedure using the cursor and fetch the return value:
return_value = cursor.var(cx_Oracle.NUMBER)cursor.callproc("our_stored_procedure_name", [return_value])
Replace our_stored_procedure_name with the actual name of the stored procedure being used. If the stored procedure accepts any input parameters, pass them as a list in the second argument of callproc().
Retrieve the return value from the return_value variable and use it as needed:
result = return_value.getvalue()print("Return Value:", result)
After executing the stored procedure and retrieving the return value, remember to close the cursor and connection to release database resources:
cursor.close()connection.close()
You’ve now executed an Oracle-stored procedure with a return value using the cx_Oracle module in Python. Make sure to customize the code according to your specific database and stored procedure requirements.
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