How to fix the Oracle error PLS-00250: Incorrect Usage of string in parameters clause.?

In this post, you’ll learn more about the Oracle ErrorPLS-00250: Incorrect Usage of string in parameters clause. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00250: Incorrect Usage of string in parameters clause.

Reason for the Error PLS-00250: Incorrect Usage of string in parameters clause.

The usage of Keywords such as MAXLEN, LENGTH, CHARSETID, CHARSETFORM RETURN in the parameters clause was incorrect

How to fix the Error PLS-00250: Incorrect Usage of string in parameters clause. ?

You can fix this error in Oracle by following the below steps

This error occurs if keywords like MAXLEN, LENGTH, TDO, DURATION, CHARSETID, or CHARSETFORM cannot be used with PL/SQL formal parameters or the mode of the formal parameter. For example, MAXLEN can only be declared for a CHAR or VARCHAR2 PL/SQL variable and its use is allowed only for OUT or INOUT PL/SQL variables. Also, RETURN was specified in the parameters clause for a PL/SQL PROCEDURE. E.g. CREATE PROCEDURE proc IS EXTERNAL NAME … LIBRARY … PARAMETERS(RETURN INDICATOR SHORT, RETURN);