Explain some of the commonly used Predefined PL/SQL Exceptions.

Correct Answer: 1)Divide by zero – This is raised when any number is attempted to divide by zero 2)TOO MANY ROWS - A SELECT INTO statement returns more than one row 3)CASE_NOT_FOUND - No choice in the WHEN clause of a case statement is selected 4)LOGIN_DENIED - An attempt to login with an invalid username or password 5)PROGRAM_ERROR - An internal PL/SQL problem