12. Using the 2.4 kernel with DB2 Version 7.1

bash# sysctl -w kernel.msgmni=128

bash# echo "128" > /proc/sys/kernel/msgmni

# Sets maximum number of message queues to 128
# Set this to 1024 or higher on production systems
kernel.msgmni = 128

bash$ ipcs -l

------ Shared Memory Limits --------
max number of segments = 4096
max seg size (kbytes) = 32768
max total shared memory (kbytes) = 8388608
min seg size (bytes) = 1

------ Semaphore Limits --------
max number of arrays = 128
max semaphores per array = 250
max semaphores system wide = 32000
max ops per semop call = 32
semaphore max value = 32767

------ Messages: Limits --------
max queues system wide = 128
max size of message (bytes) = 8192
default max size of queue (bytes) = 16384