adey <adey11@xxxxxxxxx> writes: > Please let me know if there is a way to determine when the Postmaster was > last restarted? The last postmaster start time, or the last database reset? These are not the same if any backends have crashed since the postmaster started. For determining stats lifespan I think you need the latter. Offhand I think the file timestamp of $PGDATA/postmaster.opts would do for the postmaster start time, and postmaster.pid for the other (I think postmaster.pid is updated during a reset). PG 8.1 will have a function to return postmaster start time, but not database reset time. I wonder if this is misdefined --- if you are trying to measure database uptime, the last reset would be more appropriate to track. regards, tom lane
