Kevin Johnson <[email protected]> writes:
> I am attempting to get information on the pg_subtrans directory. I
> found this morning that one had a large number of files queued in it.
> It filled the disk partition on which pgdata resides. After moving,
> linking and restarting as a temporary solution, the engine properly
> worked off these files. So, I'm trying now to get to the root cause of
> why it filled in the first place -- however I'm not sure when postgres
> engine uses this directory. I've searched the documentation and mailing
> list archive, but can't find much. Can anyone give me a link or some
> more information?
I don't recall the exact horizon for pg_subtrans offhand, but I'm pretty
sure that it's determined by your oldest open transaction. Look around
for idle-in-transaction sessions.
regards, tom lane
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