PLS-01450: This value_expression contains a nonconforming data type
Cause: This value_expression contains a nonconforming data type. Section 4.2 of X3H2, "Data types" states that: "A non-null value is either a character string or a number." Many built-in functions in STANDARD will be flagged with this warning by means of a pragma.
Action: Refer to ANSI document ANSI X3.135-1992 for details.