Installation of OEM

Step by step details of how to install OEM on a Linux 6.3 system. The database version is 11gR2.

Installer File Name Size Checksum
em12104_linux64_disk1.zip 2.1 GB
em12104_linux64_disk2.zip 1.8 GB
em12104_linux64_disk3.zip 2.6 GB

You need to adjust the /etc/security/limits.conf file.

Set the DISPLAY variable
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Change directory to where you have unzipped the installer. and execute ./runInstaller
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There should be 400 MB of free space in temp filesystem and 150 MB of free swap
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Uncheck I wish to receive security updates via My Oracle Support. and click
Next >
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Click Yes button.
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Check Skip and click Next >
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Ensure that the prerequisites have been met. If not, the item has to be fixed or Ignore if it is tolarable.

Click Next >
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Check Create a new Enterprise Manager System and then, Advanced

Click Next >
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Supply the Middleware home and the Agent home directories. Agent home and the Middleware home should not be one within the other. Also supply the Host Name. Host name should follow fully qualified name format and should not be a short name.

Click Next >
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First five plug-ins are choosen by default and cannot be unchecked.

Choose necessary plug-ins based on your requirements.

Click Next >
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Provide the passwords. Passwords should be 8 or more characters.

Click Next >
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Provide the database hostname or IP address. If host name is provide, it should be in fully qualified format.

Port and Service/SID are the details from listener configuration. These details are used to connect to database to create SYSMAN user and necessary tablespaces.

Provide the SYS password

See the below table for Deployment Size details.
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Deployment Size Target Count Management Agents Count Concurrent User Session Count
Small Up to 999 Up to 99 Up to 10
Medium Between 1000 and 9999 Between 100 and 999 Between 10 and 24
Large 10,000 or more 1000 or more Between 25 and 50
LARGE is more system resource demanding. If the requirements are not met, you get this message. But the installation will be successful.

Click OK
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Insufficiently configured database led to this message. But, installer can adjust the values and proceed without breaking.

Click Yes and proceed
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Querying the database showed the actual value
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Further deficiencies are shown here.

Click OK and continue.
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Provide SYSMAN and Agent Registration Passwords.

Ensure the datafile paths are fine with you. Adjust if necessary

Click Next >
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Suggest a convenient port or accept defaults.

Click Next >
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Review the summary and click Install
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Progressing ...
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Progressing ...
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Progressing ...
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Progressing ...
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The installer requires to run a root script allroot.sh
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Log in as root and execute the script. Accept the defaults or provide necessary values.
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The finish screen
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