On Sat, 2006-01-21 at 14:46 -0500, Tom Lane wrote:
> Currently, the standard boilerplate description of a SIGHUP parameter
> is
>
> This option can only be set at server start or in the
> <filename>postgresql.conf</filename> file.
>
> We've heard from more than one person who found this confusing ---
> frequently it's misread as saying that the parameter cannot be changed
> after postmaster start. Doubtless this is partly because the
> boilerplate phrase for a POSTMASTER parameter is
>
> This option can only be set at server start.
>
> However, previous discussions have dried up without coming up with a
> better phrase. It occurred to me today that this might work better:
>
> This option can only be set in the <filename>postgresql.conf</>
> file or on the server command line.
>
> I think mentioning the config file first is important to focus attention
> on that. The only other way to set these parameters is via command-line
> switches, so we should just say that rather than emphasizing the "server
> start time" aspect of it, which is exactly what not to emphasize.
Just seen this again today and agree its confusing.
<wildassertion>I think most people think that all parameters can only be
set at server start, until they have dug deeper. Most other systems
software requires a restart to pick up new parameters</wildassertion>
Why not simply use the technical phrase: "SIGHUP" etc. We can just say
'these terms are shorthand for "......" '
I'm not crazy about the terms but at least it is explicit and accurate.
It would also allow us to have a much longer description of all of the
implications and difficulties of each mode.
Best Regards, Simon Riggs
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