Why the need to commit explicitly when doing an UPDATE?

Question

Here\'s my code:

import cx_Oracle

conn = cx_Oracle.connect(usr, pwd, url)
cursor = conn.cursor()
cursor.execute(\"UPDATE SO SET STATUS=\'PE\' WHERE ID=\'100         


        

Answer 1

Others have explained why a commit is not necessary on a SELECT statement. I just wanted to point out you could utilize the autocommit property of the Connection object to avoid having to manually execute commit yourself:

import cx_Oracle

with cx_Oracle.connect(usr, pwd, url) as conn:
    conn.autocommit = True
    cursor = conn.cursor()
    cursor.execute("UPDATE SO SET STATUS='PE' WHERE ID='100'")
    cursor.close()

This is especially useful when you have multiple INSERT, UPDATE, and DELETE statements within the same connection.