RAC 11GR2 Preinstallation Requirements on Oracle Linux 5 Update 2

1.  Disk Space Requirements.2.  Preinstallation Requirements

1.Disk Space Requirements.

·         10 GB of space in the /tmp directory

·         Two 100G Mount Point for GI & RDBMS Binary i.e /u01 & /u02.Rest of the Space will depends upon the database size & will share later on.

2.Preinstallation Requirements.

************O.S. Requirement********************


For Linux x86-64

·         On Oracle Linux 5 Update 2

2.6.18 or later (compatible with Red Hat Enterprise kernel).

·         On Oracle Linux 5 Update 5 with the Unbreakable Enterprise Kernel for Linux

      2.6.32-100.0.19 or later.



Currently We are using 2.6.18-194.el5 in UAT/Production Servers.


****** Kernel Requirements*******************

kernel.shmmax = 68719476736
kernel.shmall = 4294967296
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 6815744
fs.aio-max-nr = 1048576
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 = 1048576


**********Security Limits**********************

oracle               soft    nproc   2047
oracle               hard    nproc   16384
oracle               soft    nofile  1024
oracle               hard    nofile  65536

session required /lib/security/pam_limits.so

session required pam_limits.so



****************DISABLE SELINUX***********************

----------------DISABLE FIREWALL-------------------------------

---------Disable NTP for RAC Instances---------------------


*****************Packages required**********************
binutils-2.*
compat-libstdc++-33*
elfutils-libelf-0.*
elfutils-libelf-devel-*
gcc-4.*
gcc-c++-4.*
glibc-2.*
glibc-common-2.*
glibc-devel-2.*
glibc-headers-2.*
ksh-2*
libaio-0.*
libaio-devel-0.*
libgcc-4.*
libstdc++-4.*
libstdc++-devel-4.*
make-3.*
sysstat-7.*
unixODBC-2.*
unixODBC-devel-2.*



**************************ASMLIB Package for Linux*******************************


Download the Oracleasm lib RPM w.r.t Kernel Version.
  oracleasm-support—Kernel Version
   oracleasm—Kernel Version
 oracleasmlib—Kernel Version


----------------DISABLE FIREWALL-------------------------------


************Java Version**********************

JDK 6 (Java SE Development Kit 1.6.0_21)
or
JDK 5 (1.5.0_24)