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How to permanently set shmmax

Hi,

for Oracle installation, I need to set kernel.shmmax parameter to 8416559104

According to the manual I did the following:

Code:

vi /etc/sysctl.conf

shmmax = 8416559104

/sbin/chkconfig boot.sysctl on

/sbin/sysctl -p

when I check the value

Code:

cat /proc/sys/kernel/shmmax 

8416559104

it looks OK, but after reboot there is the default value 3294967296 again.

What am I doing wrong?

The system is 64-bit SLES11.

Thanks for helping

Can you post the content of /etc/sysctl.conf

Also,does thishelp.

Hi,

here is my /etc/sysctl.conf

Code:

# Disable response to broadcasts.

# You don't want yourself becoming a Smurf amplifier.

net.ipv4.icmp_echo_ignore_broadcasts = 1

# enable route verification on all interfaces

net.ipv4.conf.all.rp_filter = 1

# enable ipV6 forwarding

#net.ipv6.conf.all.forwarding = 1

# increase the number of possible inotify(7) watches

fs.inotify.max_user_watches = 65536

# avoid deleting secondary IPs on deleting the primary IP

net.ipv4.conf.default.promote_secondaries = 1

net.ipv4.conf.all.promote_secondaries = 1

# Oracle Database Kernel Parameters

kernel.shmmax = 8416559104

kernel.sem = 250  256000  128 1024

net.ipv4.ip_local_port_range = 1024 65000

net.core.rmem_default = 262144

net.core.rmem_max = 262144

net.core.wmem_default = 262144

net.core.wmem_max = 262144

The link did not work for me.

Thanks

Hi,

I solved it. The default value of 3294967296 was set in /etc/sysconfig/oracle, that is why it was being rewritten after reboot.