Oracle DBA Guide for Oracle Weblogic server

Oracle Weblogic Server:

Oracle Weblogic server relevant version can be downloaded from OTN or eDelivery. I always use the Fusion Middleware Infrastructure, which supports 64-bit environments.

You can download weblogic software from Oracle Fusion Middleware Software Downloads

JDK 1.8 software:

jdk-8u241-linux-x64.tar 

Fusion_Middleware_Infrastructure12C:

fmw_12.2.1.4.0_infrastructure_Disk1_1of1.zip

fmw_12.2.1.4.0_infrastructure.jar 

fmw_12214_readme.html

We need Java Development Kit(JDK) and then install the 12cR2 (12.2.1.4.0) WebLogic Server.

What is Weblogic Server

This article explain what is the weblogic server and what use of it. Oracle WebLogic Server is a platform for developing, deploying and running enterprise applications, such as Java, for on-premises and in the cloud. WebLogic Server offers a robust, and scalable implementation of Java Enterprise Edition (EE).

Definition of WebLogic Components

Domain:

• The domain contain the all configuration of weblogic means whatever resources used for managed server within the domain.
• Single AdminServer created for domain.
• Under Admin server we can have zero-to-many managed servers.
• Managed server can be clustered across the multiple machine (HA).
• The Single domain can have multiple application or we can create separate domain for other applications as per business requirement.

AdminServer:

• In the AdminServer we can managed GUI WEB-Based interface for particular domain.
• We can manage weblogic using WebLogic Scripting Tool(WLST).
• Once we start the admin server we have GUI console and we can start managed server from there & for same work we can use WLST console from backend.

Managed Server:

• To run the application JVM memory is used in WebLogic.
• Managed server can be clustered to improve the High Availability (HA).

NodeManager:

• Single nodemanager can be used per server. And the managed server request goes through nodemanager.

WebLogic stop and startup scripts:

When we installed the WebLogic software there are some configuration files created within WebLogic domain home.

Examples:

$WLS_HOME/server/bin/startNodeManager.sh

$DOMAIN_HOME/bin/startWebLogic.sh

$DOMAIN_HOME/bin/stopWebLogic.sh

$DOMAIN_HOME/bin/startManagedWebLogic.sh <managedServer>

$DOMAIN_HOME/bin/stopManagedWebLogic.sh <managedServer>

WebLogic(AdminServer) started we can access the WebLogic console.

http://machine_name:port/console

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