Customizations on my Optiplex for Oracle 10g on Centos 5.5

# Values found on my system.
sudo /sbin/sysctl -a | egrep "kernel.sem|kernel.shm|
file-max|ip_local_port_range|rmem_default|
rmem_max|wmem_default|wmem_max"

net.ipv4.ip_local_port_range = 32768    61000
net.core.rmem_default = 129024
net.core.wmem_default = 129024
net.core.rmem_max = 131071
net.core.wmem_max = 131071
kernel.sem = 250        32000   32      128
kernel.shmmni = 4096
kernel.shmall = 4294967296
kernel.shmmax = 68719476736
fs.file-max = 300478

/etc/sysctl.conf
# Add the following only.
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_default = 262144
net.core.wmem_max = 262144

After installation Got a screen with the following details.


The following J2EE Applications have been deployed and are accessible at the URLs listed below.

iSQL*Plus URL:
http://localHost:5560/isqlplus

iSQL*Plus DBA URL:
http://localHost:5560/isqlplus/dba

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Post Installation
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- Make sure /etc/hosts has hostname set
   192.168.1.26     ranee
Do this step before DBCA is run or DBCA gives error immediately while running.
- opened ports 1158, 1521
- setup listener using netca