select utl_raw.cast_to_varchar2(utl_encode.base64_encode(utl_raw.cast_to_raw(‘123456‘))) from dual;
select utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw(‘MTIzNDU2‘))) from dual
oracle 用sql实现密码的加密，解密
原文：https://www.cnblogs.com/Linger-wj/p/9565928.html
