Install OEM on a virtualBox using Oracle Linux 6

Steps:

1.install Oracle VirtualBox

2.Setup a virtual machine with 4-6 GB

3.Install Linux Software - ISO

4.Update kernel

#  yum install oracle-rdbms-server-11gR2-preinstall

5.Prepare the environment to install OEM repository Database

a).Check for updates (this will take a while to refresh):

# yum update

b).Create group and user

groupadd -g 501 oinstall
groupadd -g 502 dba
groupadd -g 503 oper
useradd -u 1100 -g oinstall -G dba,oper oracle

c).Create Passwd for oracle user
passwd oracle

d).Create Directories

mkdir -p /u01/app/oracle
mkdir -p /u01/tmp
chown -R oracle:oinstall /u01/
chmod -R 755 /u01/
e).Change the /etc/security/limits.conf file and add;

oracle   soft   nofile    4096

f).Change the  /etc/security/limits.d/90-nproc.conf

  -- Change this line
                *           soft    nproc    1024
--add this instead  this
                *          -       nproc    16384

g).Disable secure linux by editing the "/etc/selinux/config

vim /etc/selinux/config
--change line
              SELINUX=enforcing
--to this
              SELINUX=disabled

h).Disable Firewall

# service iptables save
# service iptables stop
# chkconfig iptables off

i).Add IP's to the hosts file

vim /etc/hosts
192.168.136.131     db.db.com      db          --the db repostory
192.168.136.138     upgrade         upgrade  --the OEM

j).Add the following lines to the “vim /etc/security/limits.conf” file.

oracle              soft     nproc   2047

oracle              hard    nproc   16384
oracle              soft     nofile   4096
oracle              hard    nofile   65536
oracle              soft     stack    10240

k).Add or amend the following lines to the “/etc/sysctl.conf” file

fs.aio-max-nr = 1048576
fs.file-max = 6815744
 kernel.shmall = 2097152
#kernel.shmmax = 1054504960
kernel.shmmni = 4096
# semaphores: semmsl, semmns, semopm, semmni
 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

l).Run the following command to change the current kernel parameters

 /sbin/sysctl –p

m).Add this to the vim /etc/pam.d/login

 session    required     pam_limits.so

n).Login as Oracle User and update .bash_profile variables

$ vim .bash_profile
export ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1
PATH=$PATH:$HOME/bin:$ORACLE_HOME/bin:$ORACLE_HOME/sqldeveloper/sqldeveloper  /bin:$ORACLE_HOME/jdk/bin
export PATH
ORACLE_SID=dblab
ORACLE_BASE=/u01/app/oracle
export ORACLE_BASE ORACLE_SID TMPDIR TMP
LD_LIBRARY_PATH=$ORACLE_HOME/bin:$ORACLE_HOME/lib:$ORACLE_HOME/jdbc/lib
export LD_LIBRARY_PATH
NLS_DATE_FORMAT='DD-MON-YY HH24:MI:SS'
export NLS_DATE_FORMAT
set -o vi
EDITOR=vim
export EDITOR
ORAENV_ASK=NO
#. oraenv

o).Copy  binaries ,unzip and run the Installer to create the OMR - Oracle Management Repostory

               ./runInstaller

Run NETCA and make listener static after its complete

$netca

SID_LIST_LISTENER =
           (SID_LIST =
             (SID_DESC =
               (GLOBAL_DBNAME = dblab.world)
               (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
               (SID_NAME = dblab)
             )
           )
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = LISTENER))
      (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.4)(PORT = 1521))
    )
  )
#ADR_BASE_LISTENER = /u01/app/oracle

Run DBCA to create database

$dbca 

Check if the Listener is UP (MUST be up and the database as well)

$lsnrctl status
$snrctl start

On the Repository-OMR

 sqlplus / AS SYSDBA
ALTER SYSTEM SET processes=300 SCOPE=SPFILE;
ALTER SYSTEM SET session_cached_cursors=200 SCOPE=SPFILE;
ALTER SYSTEM SET sga_target=2G SCOPE=SPFILE;
ALTER SYSTEM SET shared_pool_size=600M SCOPE=SPFILE;
ALTER SYSTEM SET pga_aggregate_target=1G SCOPE=SPFILE;
ALTER SYSTEM SET job_queue_processes=20 SCOPE=SPFILE;
 

Restart the instance

shu imediate

startup 

INSTALL OMS -Oracle Management Service

6.Install Linux software,update Kernel and set up the files as required for a standard installation---As above

7.Create groups and user

groupadd -g 501 oinstall
groupadd -g 502 dba
groupadd -g 503 oper
useradd -u 1100 -g oinstall -G dba,oper oracle

8. Create Passwd for oracle user
passwd oracle

9.set .bash_profile variables for user Oracle

vim .bash_profile

OMS_HOME=/u01/app/oracle/oms12cr4; export OMS_HOME
AGENT_BASE=/u01/app/oracle/agent_base; export AGENT_BASE
export PATH
set -o vi
EDITOR=vim
export EDITOR
ORAENV_ASK=NO
#. oraenv
10.Create Directories

$ mkdir -p /u01/app/oracle/oms12cr4
$ mkdir -p /u01/app/oracle/agent_base

11.Download the OEM binaries from oracle: em12104_linux64_disk1, em12104_linux64_disk2, em12104_linux64_disk3, copy the binaries and unzip to install

$ mkdir em12cr4
$ unzip -d em12cr4 em12104_linux64_disk1.zip
$ unzip -d em12cr4 em12104_linux64_disk2.zip
$ unzip -d em12cr4 em12104_linux64_disk3.zip
$ cd em12cr4

12.Run the installer
$ ./runInstaller

13.a) Deconfigure/Drop  the EM from the repostory-- for single instance  ON THE DATABASE

cd $ORACLE_HOME/bin
$./emca -deconfig dbcontrol db -repos drop -SYS_PWD  xxxxxx  -SYSMAN_PWD  xxxxxx

 b)Deconfigure/Drop  the EM from the repostory-- for RAC database
cd $ORACLE_HOME/bin
$./emca -deconfig dbcontrol db -repos drop -cluster -SYS_PWD xxxxxx -SYSMAN_PWD xxxxxx
 

 14.Redirect Management Agent to another host
--View OEM version
Setup menu, select Manage Cloud Control, then select Management Services.
Setup menu, select Extensibility, then select Plug-ins.
15.Add TARGET  & Discover

Add target
setup>add target manually>add host>+add>enter ipadd or domain for the host-eg 192.168.136.134> select platform/os
the host run-if not available download>click next>enter the agent_base directory-/u01/app/oracle/agent_base >+add user
credentials- use OS user eg: user:oracle,pass:oracle123(go to the db:/etc/sudoers & add oracle ALL=(ALL) ALL> next>click deploy

--Discover targets
setup>add target manually>select agent type>oracle database,listener,automatic storage management>click add using guided process>discover
the target>click search and select the host to discover from the list>click next>select target,enter password for user DBSNMP-if the user
is locked,go to the db and unlock>next to discover

Installation snapshots at a glance

Installation Details