How can the kernel parameter for the maximum size of the shared memory segment (shmmax)...

LPI 201-450 Question Answer

How can the kernel parameter for the maximum size of the shared memory segment (shmmax) be changed to 2GB (2147483648 Bytes) on a running system? (Choose TWO correct answers.)

Edit /etc/shmmax and set the parameter to 2147483648.

sysctl shmmax=2147483648

sysctl kernel.shmmax=2147483648

echo 2147483648 > /proc/sys/kernel/shmmax

export kernel.shmmax=2147483648

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Product: 201-450
Update on: Jul 26, 2025
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How can the kernel parameter for the maximum size of the shared memory segment (shmmax)...

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