Re: Setting Linux Kernel Parameters

Hi, Howard,
My knowing about Linux is even less than that of Oracle server. Anyway I found the following which I think you may try:

To set the msgmni kernel parameter at boot time, append the following lines to /etc/sysctl.conf:
 # Sets maximum number of message queues to 128  # Set this to 1024 or higher on production systems  kernel.msgmni = 128

I think it is the same thing for shm or semaphore.

Regards,

"Howard J. Rogers" wrote:

> Lovely. That's really useful, so thank you.
>
> But it unfortunately doesn't tell me *how* to modify those parameters, which
> is what I actually needed to know. The structure of those files looks a bit
> tricky, and I don't want to bodge them up. It then also says 'if you modify
> them, rebuild the kernel', which again I'm sure is sound advice, but it
> doesn't say *how* to do that.
>
> If these aren't steps which are easily describable, then fair enough: if I
> have to get the Big Boys Book of Linux for Windows Users out of the library,
> I'll do it. I just thought maybe it wasn't that tricky... ?
>
> Regards
> HJR
> --
> ------------------------------------------
> Resources for Oracle : www.hjrdba.com
> ============================
>
> "Eve Hoellwarth" <hoellwarth-e_at_gmx.at> wrote in message
> news:v94aausclahcbd0nritk14o2cd1s7nhsst_at_4ax.com...
> > "Howard J. Rogers" wrote
> >
> > >Would anyone care to enlighten a poor Windows user on how to go about
> making
> > >the kernel parameter changes you need to make on a Linux box before
> > >installing Oracle a permanent fixture of the kernel?
> > >
> > >In other words, for installation, I do the following one-off exercise:
> > >
> > >cd /proc/sys/kernel
> > >
> > >echo 250 32000 100 128 > sem
> > >
> > >echo 33554432 > shmmax
> > >
> > >echo 4096 > shmmni
> >
> > >And installation proceeds smoothly accordingly. But how to make the
> change
> > >permanent? In the deepest recesses of my brain, the words ".profile" are
> > >stirring into life, but not sure if that's really the way to do it (or
> whose
> > >profile to alter if so, so that the settings are made system-wide).
> >
> > Out from the linux install guide from technet.oracle.com
> >
> http://technet.oracle.com/docs/products/oracle8i/pdf/linux_installguide_817.
> pdf:
> >
> > Set the kernel parameters for shared memory in
> > /usr/src/linux/include/asm/shmparam.h and the semaphores in
> > /usr/src/linux/include/linux/sem.h
> >
> > In .profile you should set your oracle environment variables
> >
> > hth
> > Eve
> >
Received on Fri Mar 29 2002 - 23:01:04 CST