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Subject: Re: [Sysadmins] [sisyphus]  postgresql (emaphores (SEMMNS),
 would be exceeded)
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Sisyphus@mail.ru wrote:

>  postgres[14947]: [2-1] FATAL:  could not create semaphores: No space left on device
>  postgres[14947]: [2-2] DETAIL:  Failed system call was semget(5432018, 17, 03600).
>  postgres[14947]: [2-3] HINT:  This error does *not* mean that you have run out of disk space.

посмотри, может родственное к твоей проблеме
http://www.opennet.ru/openforum/vsluhforumID1/64940.html#2

>  postgres[14947]: [2-4] ^IIt occurs when either the system limit for the maximum number of semaphore sets (SEMMNI), or the system wide maximum number of
>  postgres[14947]: [2-5]  semaphores (SEMMNS), would be exceeded.  You need to raise the respective kernel parameter.  Alternatively, reduce PostgreSQL's
>  postgres[14947]: [2-6]  consumption of semaphores by reducing its max_connections parameter (currently 512).
>  postgres[14947]: [2-7] ^IThe PostgreSQL documentation contains more information about configuring your system for PostgreSQL.

                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
думаю стоит читать что пишет система ;)

>  postgres[14947]: [3-1] LOG:  shmctl(25755662, 0, 0) failed: Invalid argument
>  postgresql:  failed




-- 
У каждого в башке свои тараканы...