支持自定义验证方式，如下函数可以改造下从数据库中去匹配。

CREATE OR REPLACE FUNCTION blog_cust_auth (
  p_username IN VARCHAR2,
  p_password IN VARCHAR2
)
  RETURN BOOLEAN
AS
BEGIN
  IF     LOWER (p_username) = ‘pass’
     AND LOWER (p_password) = ‘123’ THEN
    RETURN TRUE;
  ELSE
    – Set APEX authentication Codes
    apex_util.set_authentication_result (p_code => 3);
    – Set our own APEX custom text
    apex_util.set_custom_auth_status (p_status => ‘Bad Username’);
    RETURN FALSE;
  END IF;
END;

详细参考：https://www.talkapex.com/2009/03/custom-authentication-status/