Oracle Message PLS-01454 - No operator may be used with values of data type CHAR

ERROR	No operator may be used with values of data type CHAR
CAUSE	No operator may be used with values of data type character string. Section 5.9, , syntax rule 3, of X3H2 states: If the data type of a is character string, then the shall not include any operators. This warning is placed on many functions in STDBASE that take CHAR args.
ACTION	None