blocking the alter role command

<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:x-small">Hello,<br /><br
/></div><divclass="gmail_default" style="font-family:verdana,sans-serif;font-size:x-small">I would like to know if is
itpossible to block the following command: ALTER USER myuser PASSWORD;<br /><br /></div><div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:x-small">​Mytarget is allow ​to execute this command from a specific
address.<br/><br /></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:x-small">Thanks a
lot.<br/></div><br /><div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:x-small">​Regards​</div><br/>-- <br /><div
class="gmail_signature">JotaComm<br/><a href="http://jotacomm.wordpress.com"
target="_blank">http://jotacomm.wordpress.com</a></div></div>