> I have been trying to get Postmaster running since last night in order
> to test my code and it says that there no more free slots available.
> here is the error message:
>
> LOG: could not bind IPv6 socket: Cannot assign requested address
> HINT: Is another postmaster already running on port 12340? If not, wait
> a few seconds and retry.
> FATAL: could not create semaphores: No space left on device
> DETAIL: Failed system call was semget(12340001, 17, 03600).
> HINT: This error does *not* mean that you have run out of disk space.
> It occurs when either the system limit for the maximum number of
> semaphore sets (SEMMNI), or the system wide maximum number of semaphores
> (SEMMNS), would be exceeded. You need to raise the respective kernel
> parameter. Alternatively, reduce PostgreSQL's consumption of semaphores
> by reducing its max_connections parameter (currently 100).