On Thu, Apr 29, 2010 at 11:42 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Gavin Kistner <phrogz@mac.com> writes:
>> Mac OS X 10.6.3
>> Built and installed PG 8.4.3 from source
>> Trying to start the server, I get "could not create shared memory segment: Invalid argument".
>
> OSX is *notoriously* unfriendly about configuring shm parameters.
> You look at it sidewise, it doesn't work, and generally won't tell
> you why it's refusing to talk to you. We document a few of the known
> constraints in our manual, but I'm sure there are more.
The fact that they seem to change the needed magical incantations
every point release doesn't help things either.