In most monarchies the oath is not to the Crown but to the person of the King.
In the Netherlands there are two oaths:
"I swear that I have, neither directly nor indirectly, under no any name or pre-condition, promised any gift or favour for being appointed in this Office.
I swear that I have, neither directly nor indirectly, under no any name or pre-condition, accepted any gift or favour for doing acts or to refrain from acts in this Office."
"I swear loyalty to The King, to the Statute of the Kingdom and to the Constitution.
I swear that I will faithfully exercise the duties enforced by my Office.
So help me God almighty!"
: The King of the Netherlands takes the Oath from the new Advocate-General at the High Council of the Netherlands (the Supreme Court of Justice), earlier this week.