Oracle Error PLS-00230: OUT and IN OUT formal parameters may not have default expressions

Oracle Error Message

PLS-00230: OUT and IN OUT formal parameters may not have default expressions

Reason for the Error

When the formal parameters of a procedure were declared, an OUT or IN OUT parameter was initialized to a default value, as in PROCEDURE calc_bonus (bonus OUT REAL := 0, …) IS … However, only IN parameters can be initialized to default values.

Solution

Remove the illegal default expression.