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Re: [Mac OS X Mountain Lion] FATAL: could not create shared memory segment: Cannot allocate memory

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On Sun, Oct 7, 2012 at 7:30 AM, Yvon Thoraval <yvon.thoraval@xxxxxxxxx> wrote:
>
> I've just installed PostgreSQL, using brew, on Mac OS Mountain Lion.
> The server doesn't start and the log file shows :
>
> $ cat /usr/local/var/postgres/server.log
> FATAL:  could not create shared memory segment: Cannot allocate memory
> DETAIL:  Failed system call was shmget(key=5432002, size=3809280, 03600).
> HINT:  This error usually means that PostgreSQL's request for a shared
> memory segment exceeded available memory or swap space, or exceeded your
> kernel's SHMALL parameter.  You can either reduce the request size or
> reconfigure the kernel with larger SHMALL.  To reduce the request size
> (currently 3809280 bytes), reduce PostgreSQL's shared memory usage, perhaps
> by reducing shared_buffers or max_connections.
> The PostgreSQL documentation contains more information about shared memory
> configuration.

http://www.postgresql.org/docs/9.2/static/kernel-resources.html


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