I can see this function available in the backend:
TransactionId GetOldestXmin(bool alldbs);
The cost is based on walking thru each backend process, which I guess
is obvious, as if there are 47 backends, that means 47 xids.
Presumably not _too_ expensive; certainly something that has to be run
every time a vacuum is requested.
Is there a way to expose this?
--
output = ("cbbrowne" "@" "gmail.com")
http://linuxdatabases.info/info/languages.html
If you're not part of the solution, you're part of the precipitate.
---------------------------(end of broadcast)---------------------------
TIP 8: explain analyze is your friend
