10g installation steps on LINUX

1) Check Physical Memory:-

[root@sujeet ~]$ grep MemTotal /proc/meminfo

MemTotal:      2036792 kB

Required physical Memory (RAM):-1GB

2) Check Swap Space :- 

[root@sujeet ~]#   grep SwapTotal /proc/meminfo

SwapTotal:     4192956 kB

Required Swap Space:-1.5 GB

3). Check free Space:-

[root@sujeet ~]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/sda3             222G   99G  113G  47% /

/dev/sda1              99M   12M   83M  12% /boot

tmpfs                 995M   12K  995M   1% /dev/shm

[root@sujeet ~]# free

        total     used     free   shared  buffers     cached

Mem-2036792    1970268      66524    0     151772   1234832

-/+ buffers/cache583664    1453128

Swap: 4192956      53876    4139080

4)  CHANGE HOSTNAME OR MACHINE NAME:-

[root@sujeet ~]#  vi  /etc/hosts

Make sure that there is an entry in /etc/hosts file for your 

machine like this:

[IP-address]  [Fully-qualified-machine-name]  [Machine-name]

172.16.2.76            R0202.iwarelogic.com            R0202

5) GUI:-Create User and Group:-

System -> Administration -> Users and Groups -> 

i) Add user oracle

ii) Add Group dba

iii) Assign user to that group

        OR

COMMAND LINE:-

[root@sujeet ~]# useradd -g dba -m oracle

[root@sujeet ~]# passwd oracle

Changing password for user oracle.

New UNIX password: 

BAD PASSWORD: it is based on a dictionary word

Retype new UNIX password: 

passwd: all authentication tokens updated successfully.

6) Create directories where the Oracle Software and database 

will be installed.

[root@sujeet ~]#  Mkdir /10g_install 

[root@sujeet ~]#  chown -R oracle:dba  /10g_install

[root@sujeet ~]#  chmod -R 777 /10g_install

7) SELINUX=disabled

System -> Administration ->

If you leave SELINUX=enforcing then you may get an error later 

while starting sqlplus:

sqlplus: error while loading shared libraries:

/usr/lib/oracle/default/client64/lib/libclntsh.so.11.1: 

cannot restore segment

prot after reloc: Permission denied

8) Linux Kernel Parameters to support Oracle.

Open /etc/sysctl.conf and add the following lines:

[root@sujeet ~]# vi /etc/sysconfig/network

# Oracle settings

fs.file-max = 65536

kernel.shmall = 2097152

kernel.shmmax = 2147483648

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

net.ipv4.ip_local_port_range = 1024 65500

net.core.rmem_default = 262144

net.core.rmem_max = 262144

net.core.wmem_default = 262144

net.core.wmem_max = 262144

Make the kernel parameters changes effective immediately:

[root@sujeet ~]# /sbin/sysctl -p

[root@sujeet ~]#  /sbin/sysctl -a | grep <name of kernel>

9)  RPM INSTALL: - (For Linux 32-bit)

[root@sujeet ~]#  cd /setup/rpms

[root@sujeet newrpms]# ls

binutils-2.17.50.0.6-6.0.1.el5.i386.rpm

binutils-2.17.50.0.6-9.0.1.el5.i386.rpm

compat-binutils215-2.15.92.0.2-24.i386.rpm

compat-libcwait-2.0-2.i386.rpm

compat-libstdc++-3.2-1.i386.rpm

compat-libstdc++-egcs-1.1.2-1.i386.rpm

compat-oracle-el5-1.0-5.i386.rpm

fonts-chinese-3.02-12.el5.noarch.rpm

openmotif21-2.1.30-11.EL5.i386.rpm

openmotif21-debuginfo-2.1.30-11.EL5.i386.rpm

xorg-x11-libs-compat-6.8.2-1.EL.33.0.1.i386.rpm

INSTALL RPM COMMAND:-

[root@sujeet ~]#  rpm –ivh  <rpmname> 

[root@sujeet ~]#  rpm –Uivh <rpmname>

Install rpm check:-

[root@sujeet ~]#  rpm -qa |grep <rpmname>

10) Restart system:-

[root@sujeet ~]# init 6   

11) Permission to connect any HOST:-

[root@sujeet ~]#  xhost +

access control disabled, clients can connect from any host

12)  Now switch to the user ORACLE

[root@sujeet ~]# su - oracle

12) Set BASH_PROFILE:-

[oracle@sujeet ~]#   vi .bash_profile

(Open file than copy inst parameter)

# Oracle Settings

    TMP=/tmp; export TMP

    TMPDIR=$TMP; export TMPDIR

    ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE

    ORACLE_HOME=$ORACLE_BASE/product/10.2.0/db_1; export ORACLE_HOME

    ORACLE_SID=TSH1; export ORACLE_SID

    ORACLE_TERM=xterm; export ORACLE_TERM

    PATH=/usr/sbin:$PATH; export PATH

    PATH=$ORACLE_HOME/bin:$PATH; export PATH

    LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH

    CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; 

export CLASSPATH

13). Permission grand Oracle SETUP: - (By root user) 

[root@sujeet ~]#   chown -R oracle:dba /10g_setup

[root@sujeet ~]#   chmod -R 777 /10g_setup

14). Login as oracle:-

Go to setup location

[oracle@sujeet ~]#   cd /10g_setup/database/

[oracle@sujeet ~]#   $ ./runInstaller

Open new window>>>>>>>>>

Manual Oracle 10g Uninstall

UNIX

Uninstalling all products from UNIX is a lot more consistent. If you do need to resort to a manual uninstall you should do something like:

• Uninstall all Oracle components using the Oracle Universal Installer (OUI).
• Stop any outstanding processes using the appropriate utilities.
  

  # oemctl stop oms user/password
  # agentctl stop
  # lsnrctl stop

  Alternatively you can kill them using the kill -9 pid command as the root user.
• Delete the files and directories below the $ORACLE_HOME.
  

  # cd $ORACLE_HOME
  # rm -Rf *

• With the exception of the product directory, delete directories below the $ORACLE_BASE.

  # cd $ORACLE_BASE
  # rm -Rf admin doc jre o*

• Delete the /etc/oratab file. If using 9iAS delete the /etc/emtab file also.

  # rm /etc/oratab /etc/emtab

Windows

• Uninstall all Oracle components using the Oracle Universal Installer (OUI).
• Run regedit.exe and delete the HKEY_LOCAL_MACHINE/SOFTWARE/Oracle key. This contains registry entires for all Oracle products.
• If you are running 64-bit Windows, you should also delete the HKEY_LOCAL_MACHINE/SOFTWARE/Wow6432Node/Oracle key if it exists.
• Delete any references to Oracle services left behind in the following part of the registry (HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Ora*). It should be pretty obvious which ones relate to Oracle.
• Reboot your machine.
• Delete the "C:\Oracle" directory, or whatever directory is your ORACLE_BASE.
• Delete the "C:\Program Files\Oracle" directory.
• If you are running 64-bit Wiindows, you should also delete the "C:\Program Files (x86)\Oracle" directory.
• Remove any Oracle-related subdirectories from the "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\" directory.
• Empty the contents of your "C:\temp" directory.
• Empty your recycle bin.

At this point your machine will be as clean of Oracle components as it can be without a complete OS reinstall.
Remember, manually editing your registry can be very destructive and force an OS reinstall so only do it as a last resort.
If some DLLs can't be deleted, try renaming them, the after a reboot delete them.