Re: BUG #6459: logging_collector=off but log_filename set inhibits logoutpu

calestyo@scientia.net writes:
> http://www.postgresql.org/docs/9.1/static/runtime-config-logging.html
> claims that log_filename is only used when logging_collector is enabled.

That is a true statement, as can easily be proven by looking at the
source code: nothing except syslogger.c pays any attention to the
Log_filename variable.

> However it seems that if the later is off, but the former is set (to
> anything), no log output goes to stderr as well.

That would depend on other settings that you haven't mentioned,
particularly log_destination.  Keep in mind also that the active setting
of logging_collector can't be changed without a postmaster restart
(which is why it's a separate variable from log_destination).

            regards, tom lane