conf and then run the /sbin/sysctl -p command
to change the values immediately. After the next reboot, the values specified in /etc/sysctl.conf
will be set automatically.
Kernel Parameter Value
kernel.shmall 2097152
kernel.shmmax Minimum of half the size of physical memory and 4GB
kernel.shmmni 4096
kernel.sem 250 32000 100 128
fs.file-max Minimum of 512 * PROCESSES
net.ipv4.ip_local_port_range 1024 65000
rmem_default 4194304
rmem_max 4194304
wmem_default 262144
wmem_max 262144
TABLE 10-2 Oracle Database 11g Minimum Kernel Parameter Values
356 Oracle Database 11g DBA Handbook
Network Configuration
Each node in a RAC requires at least two network cards; one card is to connect to the public
network for client communication, and the other is used for private network traffic between the
nodes in the cluster. For the examples in this chapter, I will use the following /etc/hosts file:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
192.168.2.95 dw
192.168.2.91 oe4 # Oracle Linux Enterprise 4
192.168.2.81 asmw
192.168.2.82 asinfra
192.168.2.68 phpxe # with Oracle Database XE
192.168.2.65 officedesktop # some good shares are here
192.168.2.101 oc1 #public1
192.168.1.101 poc1 #private1
192.168.2.176 voc1 #virtual1
192.168.2.102 oc2 #public2
192.168.1.102 poc2 #private2
192.168.2.177 voc2 #virtual2
192.168.2.
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