Re: Question about Kernel Source

[Stephen Carville <carville cpl net>]

On Fri, 22 Nov 2002, Dwight Taylor wrote:

- Hi, all:
- 
- I have been setting up a RH 7.2 host at home to put an Oracle 8.1.7 db
- on for practice/test/training - I know that 8.1.7 isn't certified with
- 7.2, so don't go there. Anyway, I was trying to change the shmmax,
- nproc, and fopen last night and discovered that my installation doesn't
- have kernel-source in the rpms, so I would have to change it every
- stinkin time I boot up. I looked on the CD#1, but there's no folder for
- source there either. So what are my options? I have fast internet, so
- download is an option, but where do I go to get this? I assume it is a
- kernel-source*.rpm of some type, but couldn't find it on redhat's site.
- Any ideas?

You donlt have to modify the kernel source.  I created a script file 
where I modify the various values and source that in rc.local.

Example script:

#!/bin/sh

# set oracle kernel values on boot up
# generally use the Oracle recommended values or system defaults
# whichever is larger

# kernel sys directory
PROC=/proc/sys/kernel

# set semaphores (not graven in stone :-)
# maximum number of semaphores for each userid
SEMMSL=250
# maximum number of semaphores on the system
SEMMNS=32000
# maximum number of operations per sempop call
SEMOPM=100
# maximum nuber of semaphore sets in entire system
SEMMNI=128

echo "$SEMMSL $SEMMNS $SEMOPM $SEMMNI" > $PROC/sem

# set shared memory parameters
# maximum allowable size of shared memory ~= 50% of physical RAM
SHMMAX=526557184
# maximum number of shared memory segments
SHMMNI=4096

echo $SHMMAX >$PROC/shmmax
echo $SHMMNI >$PROC/shmmni


In rc.local add:

. /etc/rc.d/<name of script>


-- 
-- Stephen Carville http://www.heronforge.net/~stephen/gnupgkey.txt
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Blessed are those who, in the face of death, think only of the 
front sight.
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