Re: SHMMAX, etc., for Oracle8 on Linux: Where to change?

>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 11/25/98, 11:05:24 PM, "Sindu" <cx_at_engineer.com> wrote regarding Re:

SHMMAX, etc., for Oracle8 on Linux: Where to change?:

> >The installation documentation for Oracle8 on Linux shows to change
 some
> >shared memory parms, such as SHMMAX, SHMMNI, etc. Where the heck are
 

 these,
> >and how do I change them? Could anyone point me in the right
 direction?
> >Please email?
> >
> >Thanks and regards,

> It's on the linux kernel source. You may need to recompile the kernel

if it
> doesn't meet the requirement.
> Try:
> cd /usr/src/linux // or wherever your kernel source is
> find . -print | xargs grep SHMMAX // to find the files
> containing the SHMMAX parameter
 

> Good luck..

in /usr/src/linux/include/asm/shmparam.h SHMMAX is 32MB (0x2000000), with a note to "try not to change the default shipped SHMMAX - people rely on it. SHMMNI is 128 (1<< SHM ID BITS which is 7). This is with 2.1.128. I'd suggest just confirming your values and only changing them if Oracle says you must after consultation.

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