Description
bool 
oci_password_change ( resource connection, string username, string old_password, string new_password)
     Changes password for user with username.
     Parameters old_password and
     new_password should indicate old and new passwords
     respectively.
    
     如果成功则返回 TRUE,失败则返回 FALSE。
    
注: 
      In PHP versions before 5.0.0 you must use ocipasswordchange() instead. 
      This name still can be used, it was left as alias of
      oci_password_change() for downwards compatability. 
      This, however, is deprecated and not recommended.