Re: Hot Standby: too many KnownAssignedXids
Joachim Wieland <joe@mcknight.de>
From: Joachim Wieland <joe@mcknight.de>
To: Fujii Masao <masao.fujii@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2010-11-22T20:49:09Z
Lists: pgsql-hackers
On Sun, Nov 21, 2010 at 11:48 PM, Fujii Masao <masao.fujii@gmail.com> wrote: > -------------- > If you suspect a bug in Hot Standby, please set > trace_recovery_messages = DEBUG2 > in postgresql.conf and repeat the action > > Always useful to know > * max_connections > * current number of sessions > * whether we have two phase commits happening > -------------- The trace_recovery_messages parameter does not give more output... max_connections is set to 100 there have been no sessions on the standby itself, but a few on the primary database, I don't know how much but probably not more than 10. The sessions there were doing quite some load however, among them slony synchronization, since the hot standby master database was actually a slony replica. max_prepared_transactions has not been changed from its default value of 0. Joachim