Oracle’s transaction management and read consistency mechanisms are fundamental to maintaining data integrity in multi-user environments. Understanding how Oracle handles concurrent transactions,…
When you execute ROLLBACK;, Oracle discards all uncommitted changes and restores data to its previous state. Understanding ROLLBACK is essential for transaction…
When you execute COMMIT;, Oracle makes all your DML changes permanent. This seemingly simple statement triggers a complex series of operations involving…
When you execute DELETE FROM employees WHERE employee_id = 101;, Oracle performs a complex series of operations involving row location, undo generation,…
When you execute UPDATE employees SET salary = 60000 WHERE employee_id = 101;, Oracle performs a sophisticated series of operations involving undo…
When you execute a simple INSERT INTO employees VALUES (101, 'John', 'Doe', 50000); statement, Oracle performs a complex series of operations involving…
When you execute a simple SELECT * FROM employees WHERE department_id = 10; query, have you ever wondered what happens behind the…
Temporary tablespace management is a critical aspect of Oracle Database administration. When TEMP tablespace fills up, it can cause queries to fail,…
Buying a new laptop sounds simple. However, once you start searching, it quickly becomes confusing. There are many brands, different processors, multiple…
