If the value is less than or equal to zero, the password never expires.
To avoid locking out the super-user, the password of the database owner of a credentials database never expires.
If a connection attempt is made when the password's remaining lifetime is
less than a proportion of the maximum lifetime, a warning is issued. The
proportion is specified by the
A number of milliseconds equal to 31 days (2,678,400,000).
Static. For system-wide properties, you must reboot