dbms_table_func_admin.add_attribute(
schema_name IN VARCHAR2 DEFAULT NULL,
package_name IN VARCHAR2 DEFAULT NULL,
function+name IN VARCHAR2,
attrivute_name IN VARCHAR2);
dbms_table_func_admin.remove_attribute(
schema_name IN VARCHAR2 DEFAULT NULL,
package_name IN VARCHAR2 DEFAULT NULL,
functionname IN VARCHAR2,
attrivute_name IN VARCHAR2);