#!/bin/bash

# Author:	Ahbaid Gaffoor
# Date:		Sunday 17th November 2002
# File:		oracle_kernel
#
# Use:		To set kernel parameters on boot for RAC
#
#		Store this file under /etc/init.d/oracle_kernel and
#               create a symbolic link in run level 5 for it.
#
#               ln -sf /etc/init.d/oracle_kernel /etc/init.d/rc5.d/S25oracle_kernel
#
# Kernel Parameters before Oracle Configuration, make a note of yours
#
# /proc/sys/kernel/sem
# 250     256000  32      1024
#
# /proc/sys/kernel/shmmax
# 33554432

echo "Setting Oracle Kernel Parameters"

#
# SEMMSL SEMMNS SEMOPM SEMMNI Semaphore Parameters
#
# SEMMSL : Max number of semaphores per id
# SEMMNS : Max number of semaphores in a system
# SEMOPM : Max number of ops per per semop call
# SEMMNI : Max number of semaphore identifiers
#
echo "Setting SEMMSL SEMMNS SEMOPM SEMMNI in /proc/sys/kernel/sem"
echo 250 256000 100 1024 > /proc/sys/kernel/sem

#
# SHMMAX : Max amount of memory to be allocated for shared memory
# Should be set to half of your physical Memory 
#
echo "Setting SHMMAX in /proc/sys/kernel/shmmax"
echo 536870912 > /proc/sys/kernel/shmmax