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Oracle WebLogic Server Certification

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Interview Questions and Answers

Load balancing options include: hardware load balancers, software load balancers (e.g., Apache, Nginx), and WebLogics built-in load balancing mechanisms.

Troubleshooting involves examining log files, monitoring server performance, checking configuration settings, and using debugging tools.

Clustering allows you to run multiple Managed Servers together to provide high availability, scalability, and fault tolerance.

Configuring a WebLogic cluster involves creating a cluster resource, adding Managed Servers to the cluster, and configuring load balancing.

WebLogic Server performance can be monitored using the Administration Console, JMX (Java Management Extensions), and various monitoring tools.

Common log files include: AdminServer.log, ManagedServer.log, access.log, and diagnostic logs. They are typically located in the domain directory under the `servers//logs` directory.

Security can be configured using the Administration Console, by defining users, groups, roles, and security policies. Realms, authentication providers, and authorization providers are also configured.

A WebLogic realm is a security domain that defines authentication and authorization policies for users and resources within the domain.

JMS resources are used for asynchronous messaging. They include connection factories, destinations (queues and topics), and distributed destinations.

WebLogic Server instances can be started and stopped using the Administration Console, WLST (WebLogic Scripting Tool), or the Node Manager.

WLST is a command-line scripting interface used to manage and configure WebLogic Server. It allows you to automate tasks and perform administrative operations.

Applications can be deployed to WebLogic Server using the Administration Console, WLST, or the command line.

Common deployment methods include: exploded directory deployment, packaged archive deployment (WAR, EAR), and auto-deployment.

Data sources are configured in the Administration Console, providing JDBC connectivity to databases. This involves defining the JDBC driver, connection URL, username, and password.

Key components include: Domain, Managed Servers, Administration Server, Node Manager, and Deployments (applications, libraries, resources).

A WebLogic domain is a logically related set of WebLogic Server resources that are managed as a unit. It includes one Administration Server and one or more Managed Servers.

The Administration Server is the central control point for managing a WebLogic domain. It hosts the Administration Console and provides authentication, authorization, and configuration management services.

Managed Servers are instances of WebLogic Server that run deployed applications. They are managed by the Administration Server and host the actual business logic.

Node Manager is a utility that runs on the machine hosting WebLogic Server instances and allows you to start, stop, and monitor Managed Servers remotely.

Oracle WebLogic Server is a Java EE application server that allows enterprises to develop, deploy, and manage Java-based applications in a distributed environment.

Ripple start is a way to restart the servers in cluster. It first stops and then restarts each member of the cluster

Identify the ID of the process that is consuming CPU excessively.

- Reviewing CPU utilization with JVM utilities - thread dumps.

- Using a dedicated tool like TDMA

- Reboot.

- End or Restart Processes.

- Update Driv

A connected deployment manager has a connection to the Administration Server for the WebLogic Server domain, and by a deployment tool to both to configure and deploy applications

Arrange the resources (servlets, JSPs, static files, and deployment descriptors) in the prescribed directory format.

- Write the Web Application deployment descriptor (web.

- Create the WebLogic-Specific Deployment Descriptor (weblogic.

vertical cluster:- Vertical clustering is the practice of deploying multiple identically configured web application server instances on a single machine.

- horizontal cluster:- Horizontal clustering is the practice of deploying Web Application Ser

Explain with examples that sync with the job description.

Some common issues - DNS issues and network connectivity.

- Slow servers and loading time.

- Poorly written code.

- Lack of load balancing.

- Traffic spikes.

Explain with examples that sync with the job description

stopServer.log, SystemErr.log, SystemOut.log, and trace.log

To change the WebLogic JVM heap size:

- Open the setDomainEnv file in a text editor.

- Search for this comment line.

- Immediately after the comment line, add one of these lines.

- Save the file.

- Re-start WebLogic

In general, using archived files is more efficient when deploying applications to Managed Servers

A virtual host is a configuration entity that enables a single host machine to resemble multiple host machines. It maintains a list of Multipurpose Internet Mail Extensions (MIME) types that it processes

Explain with examples that sync with the job description.

Model–view–controller(MVC) is a software design pattern used for developing user interfaces that separate the related program logic into three interconnected elements. Each of these components is built to handle specific development aspects of an applicat

Explain specific instances with respect to the job JD.

(1) Choose the Right Technology when picking up a programming language, Database, Communication Channel.

(2) The ability to run multiple servers and databases as a distributed application over multiple time zones.

(3)Database backup, correcti

Most modern development processes can be described as agile. Other methodologies include waterfall, prototyping, iterative and incremental development, spiral development, rapid application development, and extreme programming

Software Development Life Cycle (SDLC) is a process used to design, develop and test high-quality software. Also referred to as the application development life-cycle

NA

Explain specific instances with respect to the job JD

A good software engineer is someone who is not only competent to write code but also competent to create, produce and ship useful software

NA

Schedule, Quality, Cost, Stakeholder Satisfaction, Performance

A software project manager determines the project specifications, builds the project team, draws up a blueprint for the whole project outlining the scope and criteria of the project, clearly communicates the project goals to the team; allocates budget, an

The most common software sizing methodology has been counting the lines of code written in the application source. Another approach is to do Functional Size Measurement, to express the functionality size as a number by performing Function point analysis.

software configuration management (SCM) is the task of tracking and controlling changes in the software code, part of the larger cross-disciplinary field of configuration management. Whereas change management deals with identification, impact analysis, do

Basecamp, Teamwork Projects, ProofHub, Zoho Projects, Nifty, Trello, JIRA, Asana, Podio, etc.

NA

Functional requirements are the specifications explicitly requested by the end-user as essential facilities the system should provide. Non-functional requirements are the quality constraints that the system must satisfy according to the project contract,

Different Types Of Software Testing - Unit Testing, Integration Testing, System Testing, Sanity Testing, Smoke Testing, Interface Testing, Regression Testing, Beta/Acceptance Testing.

Quality control can be described as part of quality management that is focused on fulfilling quality requirements. While quality assurance relates to how a process is performed or how a product is made.

Single Responsibility Principle (SRP), Open/Closed Principle (OCP), Liskov Substitution Principle (LSP), Interface Segregation Principle (ISP), Dependency Inversion Principle (DIP).