Hi,
pg_stat_activity sometimes list no connections or a number of connections
much smaller than the number of postgres.exe processes.
We also have these messages in our PostgreSQL log approximately
20 times a day.
FATAL: could not read from statistics collector pipe: No error
FATAL: could not write to statistics collector pipe: No connection could be
made because the target machine actively refused it.
or
FATAL: could not read from statistics collector pipe: No error
LOG: statistics collector process (PID 1628) was terminated by signal 1
It looks like the pg_stat_activity problem and the messages become
more frequent as the load/number of connection increases.
We were having the same pg_stat_activity problem and the same messages
with PostgreSQL 8.0.1 but didn't have the messages with PostgreSQL 7.4.1.
we don't know if pg_stat_activity was ok with 7.4.1 because we weren't using
it back then.
We are using Windows 2000 Server, Service Pack 4.
Thanks
Jean-Pierre Pelletier
e-djuster
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