Oracle Enterprise Manager Cloud Control 12c Release 4 (12.1.0.4) Installation step by step

Oracle Enterprise Manager Cloud 12c Release 4 (12.1.0.4) Installation High Level Steps

1) Install the Prerequisites

2)  Remove the Enterprise manager if its already installed on db

3) Set the DB Parameters

4) New Enterprise manager Installation

Before you start with installation make sure required RPM and DB is up. In my current database I am already enabled the db enterprise manager do I am uninstalling  that.

Required RPM's

# OL5 and OL6

yum install make -y

yum install binutils -y
yum install gcc -y

yum install glibc-common -y
yum install libaio -y

yum install libXtst -y
yum install libstdc++ -y

yum install glibc-devel -y
yum install sysstat -y
yum install glibc -y

yum install setarch -y
yum install libaio -y

# OL5
yum install rng-utils -y

yum install glibc-devel.i686 -y
yum install glibc-devel.i386 -y


# OL6

* Run the below command to uninstall the database enterprise manager

emca -deconfig dbcontrol db -repos drop -SYS_PWD Passw0rd1 -SYSMAN_PWD PAssw0rd1

* Set the  below parameters

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 pga_aggregate_target=1G SCOPE=SPFILE;
ALTER SYSTEM SET shared_pool_size=600M SCOPE=SPFILE;

-- May be required if using older versions of DB.
ALTER SYSTEM SET job_queue_processes=20 SCOPE=SPFILE;


-- Restart the instance.
--ALTER SYSTEM SET log_buffer=10485760 SCOPE=SPFILE;
--ALTER SYSTEM SET open_cursors=300 SCOPE=SPFILE;


STARTUP

SHUTDOWN IMMEDIATE

*Restart the database

* Set the limit parametre

 * Create the below two folders

1.  oms12cr4 
2. agent12cr4

 * Unzip the disk with the below conmmand

  unzip -d em12cr4 em12104_linux64_disk1.zip.

  unzip -d em12cr4em12104_linux64_disk2.zip 

  unzip -d em12cr4 em12104_linux64_disk3.zip

* Once the extract is complete go to extracted folder and run the ./runInstaller commnad.

 Uncheck the check and click on Next 

Click on Yes

Check the status of all the prerequisites and click on next.
I have 64bit OS so I am skipping i686 library and click on next

Click on Yes

Select Create a new Enterprise Manager system with simple mode and click on Next

 Check the location and click on next

Give the database credentials, password and click on Next

Click on Install

 

             
               If you see the above error go to oms/sqlplus/lib and run below command

                                           make -f ins_sqlplus.mk install

                           Login in putty with root user and run the below command

                                       /app/oracle./oms12cr4/oms/allroot.sh

Click on Close

Now try accessing the URL