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/

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Run the Installer now.