Re: Semaphores and Oracle on Unix

From: Konstantin Kivi <konst_at_sirena.rinet.ru>
Date: 1997/10/10
Message-ID: <EHtqww.AH.0.debian@sirena.rinet.ru>#1/1

arpege <arpege_at_imaginet.fr> wrote:
> I've read that each Oracle process needs a semaphore to be available to
> access the SGA. Is that right and if so why ?
> What is alto the difference between latch's and semaphores ?

> Best Regards

> Philippe (arpege_at_imaginet.fr)

I am not sure what do you mean under latch, but semaphore is a unix (posix) way to order access from different process to different objects on the system (SGA in our case). man ipc
man semget
man semop
man semctl

Konstantin Received on Fri Oct 10 1997 - 00:00:00 CDT