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I want to increase the kernel.shmmax parameter in a online machine with a Oracle Database.
I have seen that I can change editing the /etc/sysctl.conf
kernel.shmmax=3112311231
and then execute this ...
- 03-04-2009 #1Just Joined!
- Join Date
- Feb 2009
- Posts
- 7
Increase shmmax parameter with Oracle database online
I want to increase the kernel.shmmax parameter in a online machine with a Oracle Database.
I have seen that I can change editing the /etc/sysctl.conf
kernel.shmmax=3112311231
and then execute this command
sysctl -p /etc/sysctl.conf
Is this correct?. Can there be any problem with the database if it is open?
The OS is Red Hat Enterprise Linux AS release 4 Update 4.
Thanks
- 03-04-2009 #2Just Joined!
- Join Date
- May 2005
- Posts
- 5
To check your current shared memory run "cat /proc/sys/kernel/shmmax". You can either echo another number into the /proc/sys/kernel/shmmax "echo number > /proc/sys/kernel/shmmax" or "sysctl -w kernel.shmmax=number". None of these are permanent, and can be used for testing.
I do not know if these will harm anything or not on a running database.


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