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Installing ORACLE 11g R2 on Linux 6.2


Installing ORACLE 11g R2 on Linux 6.2

Checking memory
# grep MemTotal /proc/meminfo
# grep SwapTotal /proc/meminfo
# df -h /dev/shm/
# mount -t tmpfs tmpfs -o size=10000m /dev/shm
# df -h /dev/shm/

Install All Packages Needed.

Add entry in host file.
#vi /etc/hosts

Make entry like this:
[IP]        [HOST_NAME]

Open /etc/sysctl.conf and add the following lines:
# Oracle settings
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmni = 4096
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
net.ipv4.tcp_wmem = 262144 262144 262144
net.ipv4.tcp_rmem = 4194304 4194304 4194304

Refresh settings
# /sbin/sysctl -p
# /sbin/sysctl -q

Open /etc/security/limits.conf and add these lines.
oracle           soft    nproc   2047
oracle           hard    nproc   16384
oracle           soft    nofile  1024
oracle           hard    nofile  65536

Disable secure linux by editing the /etc/selinux/config file, making sure the SELINUX flag is set as follows:
SELINUX=disabled

Now setup User that we will use as Oracle owner and the groups that it will need for installing and managing Oracle.

/usr/sbin/groupadd oinstall
/usr/sbin/groupadd dba
/usr/sbin/groupadd oper
/usr/sbin/useradd -g oinstall -G dba,oper oracle
/usr/bin/passwd oracle

Change bash profile for oracle.

Create directories where the Oracle Software and database will be installed.
mkdir -p /app/oracle/product/11.2.0/db_1
chown -R oracle:oinstall /app
chmod -R 0775 /app
mkdir /dbdata/oracle/oradata/
_________________________________________________________________________________

Run the Installer now.

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