"Joshua D. Drake" <[EMAIL PROTECTED]> writes: > On Mon, 7 Jan 2008 11:58:29 -0500 (EST) > Bruce Momjian <[EMAIL PROTECTED]> wrote: > >> I assume it is this TODO item: >> >> o Prevent long-lived temporary tables from causing frozen-xid >> advancement starvation >> >> The problem is that autovacuum cannot vacuum them to set >> frozen xids; only the session that created them can do that. >> http://archives.postgresql.org/pgsql-general/2007-06/msg01645.php >> >> but am confused how the fix worked. Have all of these backends been >> active for 1 billion transactions? > > Well it certainly appears that the TODO item is related. However there > are a couple of differences.
Yeah, it seems there are two bugs here. 1) temporary tables prevent frozen-xid advancement and 2) if a process dies at the wrong moment it's possible to temporary tables. Either one alone is pretty minor but I guess the combination is lethal. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com Ask me about EnterpriseDB's PostGIS support! ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
