Oracle WebLogic Server 12c Installation Prerequisites

Installation Prerequisites

- 1-GHz CPU

- 3.9 GB of Disk Space

- A minimum of 1 GB RAM, although Oracle recommends 2 GB of RAM.

- 8-bit color depth (256 colors) is required.

- The installation program requires a Java run-time environment (JRE) to run. A JRE is bundled in the Windows 32-bit and Linux x86 installation programs, as well as in some UNIX installation programs (those with file names ending in .bin).

- To run the .jar installation programs, you must have the appropriate version of the JDK installed on your system, and include the bin directory of the JDK at the beginning of the PATH variable definition.


Identify appropriate installation file for your platform and download from oracle software cloud:

http://netgik.blogspot.in/2017/02/oracle-weblogic-server-installers.html


Overview of WebLogic Server System Administration

https://docs.oracle.com/cd/E13222_01/wls/docs81/adminguide/overview.html


Understanding WebLogic Server Domains

https://docs.oracle.com/cd/E13222_01/wls/docs90/domain_config/understand_domains.html

Weblogic defines the roles of Admin/Managed server as follows:

• Admin Server
  • can be only one for a Domain, which works like a Central Configuration/Monitoring controller for the entire domain
  • runs the console, where you can create new managed servers, define DataSources (DB connections), JMS queues, deploy apps to Managed Servers, etc.
• Managed Server
  • additional WebLogic Server instances
  • you deploy Web applications, EJBs, and other resources onto the Managed Servers and use the Administration Server for configuration and management purposes only. This is where you run your apps.
  • Managed Servers can be grouped to clusters.
  • one of the examples of a Managed Server is a server running SOA applications, like OSB or BPEL. 
  
  
  
  What is domain in WebLogic ?
  What is Administration Server ?
  What is Managed Server ?
  What is Cluster in WebLogic ?   
  

WebLogic Node Manager:

Node Manager is a WebLogic Server utility that enables you to start, shut down, and restart Administration Server and Managed Server instances from a remote location. Before 12c, a Node Manager process was not associated with a specific WebLogic domain but with a host machine


Although Node Manager is optional, it is recommended if your WebLogic Server environment hosts applications with high availability requirements.

If you run Node Manager on a machine that hosts Managed Servers, you can start and stop the Managed Servers remotely using the Administration Console or from the command line. Node Manager can also automatically restart a Managed Server after an unexpected failure.

Java-based Node Manager runs within a Java Virtual Machine (JVM) process. It is recommended that you run it as a Windows service on Windows platforms and as an operating system service on UNIX platforms, allowing it to restart automatically when the system is rebooted.

The relationship between Node Manager, its clients, and the server instances it controls.
 

Other URLs:

http://onlineappsdba.com/index.php/2008/07/24/domain-administration-managed-server-cluster-in-oracle-weblogic/

http://middlewaremagic.com/weblogic/?p=1914
 

Oracle WebLogic Server Prerequisites & Installers

Installation Prerequisites

- 1-GHz CPU

- 3.9 GB of disk space

- A minimum of 1 GB RAM, although Oracle recommends 2 GB of RAM.

- 8-bit color depth (256 colors) is required.

- The installation program requires a Java run-time environment (JRE) to run. A JRE is bundled in the Windows 32-bit and Linux x86 installation programs, as well as in some UNIX installation programs (those with file names ending in .bin).

- To run the .jar installation programs, you must have the appropriate version of the JDK installed on your system, and include the bin directory of the JDK at the beginning of the PATH variable definition.

 


Oracle Prvides Three types of installer:

OS-specific Package installer - This type of installer is a standalone version of the installation program that includes the JDKs for the selected platform. The installer may be either an .exe file or a .bin file, depending on the selected platform.

Generic Package installer - This type of installer is a .jar file. It does not include the JRockit SDK and Sun JDK. You can use this type of installer to install the product on any supported platform on which Java is already installed.
  
Upgrade installer - Upgrade installers allow you to upgrade an existing WebLogic Server installation to the current patch release. For example, if you have WebLogic Server 10.3.0 installed, you can use an Upgrade installer to upgrade your installation to WebLogic Server 10.3.6. If a patch release is available for your current WebLogic Server installation, you can download an Upgrade installer from My Oracle Support.

Depending on your platform, the Upgrade installer is either an OS-specific Package installer (.bin or .exe file) or a Generic Package installer (.jar file).

Development-only and supplemental installers - The development-only installer is a ZIP file that you extract to a Middleware home directory to create a WebLogic Server installation. It contains a WebLogic Server installation that includes all of the artifacts needed for development. You must not use this WebLogic Server installation for production.

A supplemental installer ZIP file is also available to provide additional features, such as server examples, for a development-only installation.

Download installer from OTN Website.
http://edelivery.oracle.com
http://download.oracle.com

Installers for WLS 12.1.3:
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oepe-12.1.3-kepler-installer-linux-gtk.bin
oepe-12.1.3-kepler-installer-win32
fmw_12.1.3.0.0_wls
wls1213_dev
wls1213_dev_supplemental