Can I use BOOLEAN type data as return values of Oracle stored function?

Question

Can I use BOOLEAN type data as return values of Oracle stored function with Oracle connector?

Answer

The Oracle JDBC driver used in Oracle connector does not allow PL/SQL-specific data types, such as BOOLEAN, RECORD, to be used as return values.
When using Oracle stored functions, please set return values to a type other than PL/SQL-specific data types such as VARCHAR2.