• Article Type: General
• Product: Aleph
• Product Version: 20

Desired Outcome Goal:
Define the right value for shmmax kernel parameter

Procedure:
1. For SHMMAX parameter on 64-bit (x86-64) Linux system, Oracle Global Customer Support officially recommends a "maximum" of "1/2 of physical RAM".

2. Check the kernel value actually in use with
/sbin/sysctl -A | grep shm

3. Check the physical ram memory with
cat /proc/meminfo

Category: System Management (500)

Subject: Oracle (500)

• Article last edited: 10/8/2013