1. The personal representative shall, as soon as practicable following appointment, make reasonably diligent efforts to ascertain the names and addresses of all persons believed to own or possess claims against a decedent‘s estate.
 2. Upon the expiration of the later to occur of four months after the date of the second publication of notice to creditors or one month after the service of the notice by ordinary mail upon all claimants whose identities are reasonably ascertainable, at their last known addresses and whose claims will not or may not be paid or otherwise satisfied during administration, the personal representative shall pay the debts and charges against the estate in accordance with this probate code. If it appears at any time that the estate is or may be insolvent, that there are insufficient funds on hand, or that there is other good and sufficient cause, the personal representative may report that fact to the court and apply for any order that the personal representative deems necessary.