Stephen Frost escribió:

> There are counter-examples also; sysctl.d will replace what's already
> been set, so perhaps it simply depends on an individual's experience.
> For my part, I'd much prefer an error or warning saying "you've got
> duplicate definitions of X" than a last-wins approach, though perhaps
> that's just because I like things to be very explicit and clear.
> Allowing multiple definitions of the same parameter to be valid isn't
> 'clear' to me.

One of the elements that had to be in place for this whole thing of
multiple configuration files to be allowed was for pg_settings to
include precise information about, for each setting, where is its value
coming from.  I doubt any of the systems you mentioned have comparable
functionality.  If the admin has trouble figuring it out, he needs only
look into that view.

Álvaro Herrera      
PostgreSQL Development, 24x7 Support, Training & Services

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