/etc/hosts

#Public 192.168.189.21 rac1.mylab.com rac1192.168.189.22 rac2.mylab.com rac2

#Private192.168.190.21 rac1-priv.mylab.com rac1-priv192.168.190.22 rac2-priv.mylab.com rac2-priv

#VIP192.168.189.23 rac1-vip.mylab.com rac1-vip192.168.189.24 rac2-vip.mylab.com rac2-vip

#SCAN192.168.189.6 rac-scan 192.168.189.7 rac-scan 192.168.189.8 rac-scan

11gr2 for oel 5.9 rpm requirenment

binutils-2.17.50.0.6compat-libstdc++-33-3.2.3compat-libstdc++-33-3.2.3 (32 bit)coreutils-5.97-23.el5_4.1elfutils-libelf-0.125elfutils-libelf-devel-0.125gcc-4.1.2gcc-c++-4.1.2glibc-2.5-24glibc-2.5-24 (32 bit)glibc-common-2.5glibc-devel-2.5glibc-devel-2.5 (32 bit)glibc-headers-2.5ksh-20060214libaio-0.3.106libaio-0.3.106 (32 bit)libaio-devel-0.3.106libaio-devel-0.3.106 (32 bit)libgcc-4.1.2libgcc-4.1.2 (32 bit)libstdc++-4.1.2libstdc++-4.1.2 (32 bit)libstdc++-devel 4.1.2make-3.81sysstat-7.0.2

unixODBC-2.2.11 (32 bit) or laterunixODBC-devel-2.2.11 (64 bit) or laterunixODBC-2.2.11 (64 bit) or later

vi /etc/sysctl.conf

fs.aio-max-nr = 1048576 fs.file-max = 6815744 kernel.shmmni = 4096 # semaphores: semmsl, semmns, semopm, semmni kernel.sem = 250 32000 100 128 net.ipv4.ip_local_port_range = 9000 65500 net.core.rmem_default=262144 net.core.rmem_max=4194304 net.core.wmem_default=262144 net.core.wmem_max=1048586

[oracle@rac1 sshsetup]$ pwd/mnt/hgfs/stage/11.2.0.3_64bit/grid/sshsetup[oracle@rac1 sshsetup]$ ./sshUserSetup.sh -user oracle -hosts "rac1 rac2" -noPromptPassphrase -confirm -advanced

=========================================================================================disable virbr0 etc

virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link

To checkvirsh net-listTo disable virbr0, enter:# virsh net-destroy default# virsh net-undefine default# service libvirtd restart# ifconfig =============================================================================================