Vivek Khera wrote:
>
> On May 2, 2006, at 2:26 PM, Tony Wasson wrote:
>
> >The script detects a wrap at 2 billion. It starts warning once one or
> >more databases show an age over 1 billion transactions. It reports
> >critical at 1.5B transactions. I hope everyone out there is vacuuming
> >*all* databases often.
>
> 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 ...)
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support