/etc/security/limits.conf
* soft nproc 2047
* hard nproc 16384
* soft nofile 2048
* hard nofile 65536
/etc/pam.d/login
# for Oracle
session required /lib/security/pam_limits.so
/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
groupadd -g 500 oinstall
groupadd -g 501 dba
mkdir -p /apps/oracle
mkdir -p /var/opt/oracle
useradd -u 500 -d /home/oracle -g oinstall -G dba -s /bin/bash oracle
chown oracle:dba /apps/oracle /var/opt/oracle
Default values are 30 seconds for the network heartbeat and 200 seconds for I/O to a voting disk. Consequently, Oracle Clusterware may wait a minimum of 30 seconds before initiating a cluster membership reconfiguration and ejecting a failed node. Oracle support may also recommend increasing the time-outs to accommodate peak workload periods.