On May 2, 2006, at 3:03 PM, Alvaro Herrera wrote:
>> Something seems wrong... I just ran your script against my
>> development database server which is vacuumed daily and it said I was
>> 53% of the way to 2B. Seemed strange to me, so I re-ran "vacuum -a -
>> z" to vacuum all databases (as superuser), reran the script and got
>> the same answer.
>
> That's right, because a database's age is only decremented in
> database-wide vacuums. (Wow, who wouldn't want a person-wide
> vacuum if
> it did the same thing ...)
and what exactly is "vacuumdb -a -z" doing besides a database wide
vacuum?