Oracle Linunx Kernel limits

Oracle recommendatios for operating limits

/etc/sysctl.conf

kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
fs.file-max = 6815744

 

Then execute:

/sbin/sysctl -p

/etc/security/limits.conf

oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536

 

Add the following lines to the /etc/pam.d/login file:

session required /lib64/security/pam_limits.so
session required pam_limits.so

Add to the end of the file /etc/profile

if [ $USER = “oracle” ]; then
if [ $SHELL = “/bin/ksh” ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi

 

 

Finally, start the installation