"Dmitry Ryabov" <dmitry-ryabov(at)mail(dot)ru> writes:
> Description: Incorrect log_line_prefix default value in
> postgresql.conf
> log_line_prefix = '%%t '
> (must be log_line_prefix = '%t ')
Uh, the default setting is an empty string. Are you sure this is
not your own error? If it isn't, perhaps it is a problem in some
packaging of Postgres, but you did not say which package you are
using.
regards, tom lane