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Oracle Database
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Rariz, Oracle Database Developer

Valencia, Spain
Last Updated: 3 Jun 2024

- 14+ years of experience providing end-to-end assistance and high-level resolutions for complex technical problems related to Oracle databases. - Proficient in performing optimizations, upgrades, regular patching strategies, and disaster recovery setups for databases hosted on-premise machines, Exadata machines, and Azure cloud machines. - Strong track record of database administration skills acquired during work with clients all over the world - Excellent communication skills gained during the global support experience and banking experience due to the interaction with the foreign top management - Extensive expertise in post-sales support, building backup and recovery strategies, assessing database performance, and setting up disaster recovery infrastructure. - Well-versed in administering BMC Remedy ITSM Oracle databases, conducting RMAN backup and restore procedures, performing performance analysis, tuning, patching, and updating. - Proficient in AIX, Debian, and RedHat Linux server administration. - Adept at managing LANs, WANs, and network connections, overseeing infrastructure projects, and coordinating teams for optimal project execution. - Possesses a wide range of certifications, including Oracle Database Administration, Oracle High Availability, Oracle Secure Backup, Oracle Data Guard, and Microsoft Certified Professional.

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Oracle Database

Oracle Database

Database Administration

Database Administration

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Artur M., Oracle Database Developer

Last Updated: 25 Jan 2024

- .NET + Oracle + Angular 2+ software engineer with over 6 years of experience in software development.- Upper-Intermediate English.- Available ASAP.

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Oracle Database

Oracle Database



.NET Core

.NET Core

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Mykhaylo R., Oracle Database Developer

Last Updated: 3 Jun 2024
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- Over 20 years in IT with a master's degree in Cybernetics - Proficient in Ansible: Extensive experience in deploying and managing Ansible-driven infrastructure, particularly highlighted in roles as SRE/Architect (Aug 2018 – Present) and Senior DevOps Engineer/Lead Sysadmin (Aug 2020 – May 2021), where Ansible was pivotal in scaling a learning platform from 1,000 to over 100,000 students and in key migration projects. - Expertise in Windows Environments: Demonstrated strong skills in managing Windows environments, especially as an SRE/Architect (Aug 2018 – Present) and CTO (2013 – Mar 2022), involving Windows AD+MSSQL backoffice management and ITIL Service Management framework implementation on Windows platforms. - Versatile IT Roles with Ansible and Windows: Across various roles including IT Service Manager, Senior DevOps Engineer, and CTO, consistently applied Ansible and Windows technologies in large-scale infrastructure projects and day-to-day operations, showing versatility and depth in these areas. - Managing the growth of the learning platform from 1,000+ to 100k+ active students - ITIL v3 Foundations Certificate - More than 5 years of experience in leading ITIL Service Management capability and implementing end-to-end ITIL Service Management framework - Strong experience in using ServiceNow and Jira Service Desk for ITSM - Experienced IT/Telecom Specialist - UNIX and UNIX-Like OS (FreeBSD, Linux, SunOS, MacOS X) background - Over 20 years of Windows/windows server family. From NT4.0 /win3.1 up to Server2019. As well as upgrading Up to 15 years with server HW, and 13 years with storage solutions - Infrastructure problem-solver with a strong view on reliability, performance, and disaster recovery - Fluent English

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Oracle Database

Oracle Database   4 yr.


Bash   10 yr.

Shell Scripts

Shell Scripts   10 yr.


MySQL   10 yr.



Ansible Playbook

Ansible Playbook

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Nata L, Oracle Database Developer

Last Updated: 3 Jun 2024
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- Oriented Data and Business Intelligence Analysis engineer with Data Engineering skills. - 6+ years of experience with Tableau - Experience in Operations analysis, building charts & dashboards - 20+ years of experience in data mining, data analysis, and data processing. Unifying data from many sources to create interactive, immersive dashboards and reports that provide actionable insights and drive business results. - Adept with different SDLC methodologies - Waterfall, Agile SCRUM - Knowledge of performing data analysis, data modeling, data mapping, batch data processing, and capable of generating reports using reporting tools such as Power BI (advanced), Sisence(Periscope) (expert), Tableau (Advanced), Data Studio (Advanced) - Experience in writing SQL Queries, Big Query, Python, R, DAX to extract data and perform Data Analysis - AWS, Redshift - Combined expertise in data analysis with solid technical qualifications. - Advanced English, Intermediate German - Location: Germany

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Oracle Database

Oracle Database


Python   6 yr.


SQL   8 yr.

Microsoft Power BI

Microsoft Power BI

Data Analysis Expressions (DAX)

Data Analysis Expressions (DAX)   4 yr.


Tableau   6 yr.

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Marcio A., Oracle Database Developer

Last Updated: 4 Jul 2023

- 20+ years of experience in IT - Experience in Support Analyst, Systems Analysis, Software Development, Data Engineer, Database Engineer, Systems Integration, Integration Developer, Data Analysis, Data Structures, Data Integration, Database Migration, Database Modeler, Database Analyst/Developer, Database Design, Database Management, Data Warehouse, Data Discovery, ELT/ETL, Extract, Transform, Load, Data Pipelines, Data Replication, Business Intelligence, Data Modeling (Dimension and Relational), Performance Tuning (SQL, PL/SQL Applications), experience in working with large databases and datasets, testing, validation, implementation, and troubleshooting skills, performance and resource optimization improvements, maintaining development, test and production environments, experience with process automation (monitoring, alerting, auto-corrective) and distributed systems, strong knowledge in PL/SQL, SQL, Oracle Database and - Knowledge in Agile methodology (Scrum, Kanban). - Upper-Intermediate English - Available ASAP - No vacation plans

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Oracle Database

Oracle Database

Data Engineering

Data Engineering

Apache Kafka

Apache Kafka   1 yr.

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I worked with Upstaff engineers for over 2 years, and my experience with them was great. We deployed several individual contributors to clients' implementations and put up two teams of upstaff engineers. Managers' understanding of tech and engineering is head and shoulders above other agencies. They have a solid selection of engineers, each time presented strong candidates. They were able to address our needs and resolve things very fast. Managers and devs were responsive and proactive. Great experience!

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This is a super team to work with. Through Upstaff, I have had multiple projects to work on. Work culture has been awesome, teammates have been super nice and collaborative, with a very professional management.There's always a project for you if you're into tech such Front-end, Back-end, Mobile Development, Fullstack, Data Analytics, QA, Machine Learning / AI, Web3, Gaming and lots more.It gets even better because many projects even allow full remote from anywhere!Nice job to the Upstaff Team 🙌🏽.

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Leaving a review to express how delighted I am to have found such a great side gig here. The project is intriguing, and I'm really enjoying the team dynamics. I'm also quite satisfied with the compensation aspect. It's crucial to feel valued for the work you put in.Overall, I'm grateful for the opportunity to contribute to this project and share my expertise. I'm thrilled to give a shoutout and recommendation to anyone seeking an engaging and rewarding work opportunity.

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FAQs about Oracle Database Development

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AI tools and expert human reviewers in the vetting process are combined with a track record and historically collected feedback from clients and teammates. On average, we save over 50 hours for client teams in interviewing Oracle Database candidates for each job position. We are fueled by a passion for technical expertise, drawn from our deep understanding of the industry.

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Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched Oracle Database Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new Oracle Database developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

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Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present Oracle Database candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions.

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Table of Contents

TOP 13 Facts about Oracle Database

Facts about
  • Oracle Database is a widely used relational database management system (RDBMS) developed by Oracle Corporation.
  • It was first released in 1979, making it one of the oldest and most established database systems in the industry.
  • Oracle Database is known for its robustness, scalability, and high performance, making it a popular choice for large-scale enterprise applications.
  • It supports a wide range of data types, including numeric, character, date and time, and spatial data types, allowing for diverse data storage and analysis capabilities.
  • Oracle Database uses the SQL (Structured Query Language) for data manipulation and retrieval, providing a standard and widely adopted interface for interacting with the database.
  • Oracle Database offers advanced security features, such as data encryption, fine-grained access control, and auditing, ensuring the protection of sensitive data.
  • It provides built-in support for high availability and disaster recovery through features like automatic failover, online backups, and data replication.
  • Oracle Database supports both online transaction processing (OLTP) and online analytical processing (OLAP) workloads, enabling efficient handling of real-time transactions and complex data analysis.
  • With its built-in support for partitioning, Oracle Database allows for efficient data organization and retrieval, improving performance for large datasets.
  • Oracle Database offers comprehensive data integration capabilities, including support for data warehousing, data migration, and data synchronization.
  • It has a strong ecosystem of tools and technologies that complement the database, such as Oracle Enterprise Manager for database administration, Oracle Data Guard for disaster recovery, and Oracle Advanced Analytics for advanced data analysis.
  • Oracle Database is cross-platform compatible, running on various operating systems, including Windows, Linux, and Unix-based systems.
  • According to the DB-Engines Ranking, Oracle Database consistently ranks among the top database management systems in terms of popularity and market share.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior Developer0-2 yearsAssisting senior developers in coding, testing, and debugging software applications. Learning programming languages, frameworks, and development tools. Participating in code reviews and documentation.45,000 – 65,000
Middle Developer2-5 yearsDesigning, coding, testing, and debugging software applications. Collaborating with cross-functional teams to develop, test, and deploy software solutions. Mentoring junior developers and contributing to code reviews.65,000 – 90,000
Senior Developer5-8 yearsLeading and participating in the design and development of complex software applications. Providing technical guidance and mentoring to junior and middle developers. Collaborating with stakeholders to define project requirements and deliver high-quality software solutions.90,000 – 120,000
Expert/Team Lead Developer8+ yearsLeading software development teams and managing projects. Architecting and designing scalable and efficient software solutions. Mentoring and coaching team members. Collaborating with stakeholders to define project goals and ensuring successful project delivery. Conducting code reviews and ensuring adherence to coding standards.120,000 – 150,000+

How and where is Oracle Database used?

How and where
Case NameCase Description
Data WarehousingOracle Database Development is widely used for data warehousing, which involves storing and managing large volumes of structured and unstructured data for analysis and reporting purposes. With its robust features like partitioning, indexing, and parallel processing, Oracle Database enables efficient data loading, querying, and data integration from various sources. It ensures high performance and scalability, making it suitable for handling complex analytical workloads.
Online Transaction Processing (OLTP)Oracle Database Development excels in handling online transaction processing (OLTP) workloads, which involve a large number of concurrent transactions. It provides ACID-compliant (Atomicity, Consistency, Isolation, Durability) transactions, ensuring data integrity and reliability. Its multi-versioning concurrency control (MVCC) mechanism allows for concurrent access to data, improving system performance and responsiveness. Oracle Database also offers features like transaction management, concurrency control, and automatic crash recovery, making it a preferred choice for OLTP applications.
Business IntelligenceOracle Database Development is extensively used for business intelligence (BI) applications. It offers a comprehensive set of analytical functions, data mining capabilities, and advanced SQL features, enabling users to perform complex data analysis and generate meaningful insights. Oracle Database supports integration with various BI tools and platforms, providing rich visualization options, ad-hoc reporting, and interactive dashboards. It empowers organizations to make data-driven decisions and gain a competitive edge.
Enterprise Resource Planning (ERP)Oracle Database Development is a popular choice for implementing enterprise resource planning (ERP) systems. ERP solutions require a robust and scalable database backend to manage critical business processes like finance, inventory, human resources, and supply chain management. Oracle Database provides the necessary reliability, security, and performance required for handling large-scale ERP applications. It supports features like data partitioning, data replication, and high availability, ensuring seamless operations and data consistency.
E-commerceOracle Database Development is widely adopted in e-commerce applications. It provides a secure and scalable platform for managing online transactions, customer data, product catalogs, and inventory. Oracle Database’s built-in support for transactional consistency and concurrency control ensures reliable and accurate order processing. It also offers features like caching, session management, and high availability options, enabling high-performance and fault-tolerant e-commerce systems.
Cloud ComputingOracle Database Development is a key component in cloud computing environments. It offers cloud-ready features like multitenant architecture, database as a service (DBaaS), and automatic workload management. Oracle Database provides seamless integration with Oracle Cloud Infrastructure, allowing businesses to leverage the benefits of scalability, elasticity, and pay-as-you-go pricing model. It ensures data security, availability, and performance in cloud deployments, making it an ideal choice for organizations embracing cloud computing.

What are top Oracle Database instruments and tools?

Instruments and tools
  • Oracle SQL Developer: Oracle SQL Developer is a powerful integrated development environment (IDE) for Oracle Database. It provides a graphical interface for database development, administration, and query optimization. With its intuitive interface and extensive features, SQL Developer is widely used by developers and database administrators.
  • Oracle Enterprise Manager: Oracle Enterprise Manager is a comprehensive management solution for Oracle Database. It offers a centralized console for monitoring, administration, and performance tuning of Oracle Database instances. Enterprise Manager is known for its scalability and ability to manage large-scale Oracle deployments.
  • Oracle Data Pump: Oracle Data Pump is a high-speed data movement and loading utility for Oracle Database. It allows users to export and import data, as well as perform efficient database backups and restores. Data Pump is widely used for data migration, data warehousing, and backup and recovery tasks.
  • Oracle GoldenGate: Oracle GoldenGate is a real-time data replication and integration solution for Oracle Database. It enables the continuous capture, transformation, and delivery of data across heterogeneous systems. GoldenGate is known for its high performance, low latency, and support for complex data integration scenarios.
  • Oracle Advanced Analytics: Oracle Advanced Analytics is a set of tools and algorithms that enable advanced data analysis and predictive modeling within Oracle Database. It includes features such as data mining, text mining, and statistical analysis. Advanced Analytics is used by data scientists and analysts to extract valuable insights from data.
  • Oracle Spatial and Graph: Oracle Spatial and Graph is a spatial and graph data management solution for Oracle Database. It provides capabilities for storing, analyzing, and visualizing spatial and graph data. Spatial and Graph is widely used in applications such as location-based services, network analysis, and social network analysis.
  • Oracle Database Vault: Oracle Database Vault is a security solution that provides fine-grained access control and protection for Oracle Database. It allows administrators to define and enforce security policies to restrict access to sensitive data. Database Vault is known for its ability to protect against insider threats and unauthorized access.
  • Oracle Real Application Clusters (RAC): Oracle Real Application Clusters is a high-availability and scalability solution for Oracle Database. It enables multiple instances to share a single database, providing increased performance, availability, and scalability. RAC is widely used in mission-critical environments that require high levels of performance and availability.
  • Oracle Secure Backup: Oracle Secure Backup is a tape backup management solution for Oracle Database. It provides centralized management and control of tape backups, ensuring the integrity and availability of critical data. Secure Backup offers features such as encryption, compression, and data deduplication to optimize storage utilization and reduce backup windows.
  • Oracle TimesTen In-Memory Database: Oracle TimesTen In-Memory Database is an in-memory database solution for Oracle Database. It provides ultra-low latency and high-performance data processing capabilities. TimesTen is commonly used for real-time analytics, high-speed data caching, and low-latency transaction processing.

TOP 10 Oracle Database Related Technologies

Related Technologies
  • Java

    Java is the most widely used programming language for Oracle Database software development. It offers a robust and secure platform for building enterprise-level applications. With its rich set of libraries and frameworks, developers can easily interact with Oracle databases, execute queries, and handle data manipulation tasks.

  • Oracle PL/SQL

    PL/SQL is Oracle’s procedural extension to SQL, specifically designed for database programming. It provides a powerful and efficient way to develop stored procedures, functions, triggers, and packages. PL/SQL is tightly integrated with Oracle databases, allowing seamless communication and data manipulation.

  • Python

    Python has gained significant popularity among Oracle developers due to its simplicity and versatility. It offers various libraries and frameworks, such as cx_Oracle, which provide easy-to-use APIs for interacting with Oracle databases. Python’s readability and extensive community support make it an ideal choice for Oracle database software development.

  • Oracle Application Express (APEX)

    APEX is a low-code development platform provided by Oracle. It allows developers to create web applications directly within the Oracle database environment. With its declarative approach, APEX simplifies application development and enables rapid prototyping. It is highly scalable and can be customized to meet specific business requirements.

  • Oracle JDeveloper

    JDeveloper is an integrated development environment (IDE) specifically designed for Oracle applications. It supports various technologies, including Java, PL/SQL, and web development frameworks like Oracle ADF (Application Development Framework). JDeveloper offers advanced debugging, profiling, and deployment capabilities, making it a preferred choice for Oracle database software development.

  • Node.js

    Node.js has gained popularity in recent years due to its event-driven and non-blocking nature. It provides an efficient platform for building scalable and real-time applications. Developers can use the node-oracledb module to interact with Oracle databases, making it a suitable choice for Oracle database software development in modern, high-performance environments.

  • Oracle REST Data Services (ORDS)

    ORDS is a Java-based framework provided by Oracle for building RESTful web services on top of Oracle databases. It allows developers to expose database objects, execute SQL queries, and perform CRUD operations using standard HTTP methods. ORDS simplifies the process of building RESTful APIs and enables easy integration with other systems.

Soft skills of a Oracle Database Developer

Soft skills

Soft skills are essential for a successful career as an Oracle Database Developer. These skills go beyond technical expertise and play a crucial role in effective communication, collaboration, and overall job performance. Here are the soft skills required at different levels of experience:


  • Attention to detail: Ability to carefully analyze and review database structures and code for accuracy and efficiency.
  • Problem-solving: Capability to identify and troubleshoot database-related issues and provide appropriate solutions.
  • Learning agility: Willingness to continuously learn and adapt to new technologies and updates in the Oracle database ecosystem.
  • Time management: Efficiently prioritize tasks and meet deadlines within project constraints.
  • Teamwork: Ability to collaborate with team members and contribute towards the successful completion of projects.


  • Communication: Strong verbal and written communication skills to effectively interact with stakeholders and convey complex technical concepts.
  • Leadership: Capability to take ownership of tasks, guide junior team members, and contribute to project planning and decision-making.
  • Critical thinking: Aptitude to analyze complex database requirements, anticipate potential challenges, and propose innovative solutions.
  • Adaptability: Flexibility to adapt to changing project requirements, priorities, and technologies.
  • Client management: Ability to understand client needs, manage expectations, and provide excellent customer service.
  • Conflict resolution: Skill to resolve conflicts and disagreements within the team or between stakeholders professionally and constructively.
  • Mentoring: Willingness to share knowledge and mentor junior developers to foster their growth and development.


  • Strategic thinking: Ability to align database development strategies with overall business objectives and make informed decisions.
  • Project management: Proficiency in managing complex database projects, including planning, resource allocation, and risk management.
  • Collaboration: Capability to collaborate with cross-functional teams and stakeholders to ensure smooth integration of database systems with other applications.
  • Innovation: Aptitude to identify opportunities for process improvement, automation, and the adoption of new technologies and best practices.
  • Empathy: Skill to understand and empathize with user needs, ensuring database solutions are user-friendly and meet their requirements.
  • Quality assurance: Commitment to implementing and maintaining high standards of data integrity, security, and performance.
  • Continuous improvement: Drive to stay updated with the latest advancements in Oracle technologies and contribute to the professional growth of the team.

Expert/Team Lead

  • Strategic leadership: Ability to provide strategic guidance, mentorship, and direction to the team to achieve organizational goals.
  • Decision-making: Capability to make critical decisions regarding database architecture, performance optimization, and resource allocation.
  • Influence: Skill to influence and inspire team members, stakeholders, and senior management to adopt best practices and innovative solutions.
  • Conflict management: Proficiency in resolving conflicts and managing challenging situations within the team or with clients.
  • Business acumen: Deep understanding of business processes, industry trends, and the ability to align database solutions with business needs.
  • Presentation skills: Ability to effectively present complex technical concepts to both technical and non-technical audiences.
  • Strategic partnerships: Capability to build and maintain strategic partnerships with vendors, consultants, and other external stakeholders.
  • Performance optimization: Expertise in optimizing database performance, ensuring scalability, and efficient resource utilization.
  • Risk management: Proficiency in identifying, assessing, and mitigating risks associated with database development and operations.
  • Innovation leadership: Ability to drive innovation, research, and development of new approaches and solutions in the Oracle ecosystem.
  • Continuous learning: Commitment to staying at the forefront of Oracle technologies and guiding the team in adopting industry best practices.

Pros & cons of Oracle Database

Pros & cons

9 Pros of Oracle Database

  • Scalability: Oracle Database is highly scalable and can handle large amounts of data and high user loads.
  • Reliability: Oracle Database has a proven track record of being highly reliable, with built-in features such as automatic recovery and data protection mechanisms.
  • Security: Oracle Database offers robust security features, including advanced access controls, encryption, and auditing capabilities.
  • Performance: Oracle Database is known for its high performance, with optimized algorithms, efficient query execution, and advanced indexing techniques.
  • Advanced Analytics: Oracle Database provides built-in support for advanced analytics and data mining, allowing users to uncover valuable insights from their data.
  • Data Integration: Oracle Database offers comprehensive data integration capabilities, allowing users to easily connect and integrate data from various sources.
  • High Availability: Oracle Database provides features such as clustering, replication, and failover mechanisms to ensure high availability and minimize unplanned downtime.
  • Manageability: Oracle Database comes with powerful tools and utilities that make it easy to manage and administer the database, including monitoring, backup, and recovery.
  • Industry Standard: Oracle Database is widely used in the industry and has a large community of developers and database administrators, providing access to a wealth of knowledge and resources.

9 Cons of Oracle Database

  • Cost: Oracle Database can be expensive, especially for small businesses or startups with limited budgets.
  • Complexity: Oracle Database can be complex to set up and administer, requiring specialized knowledge and expertise.
  • Hardware Requirements: Oracle Database may require high-performance hardware to achieve optimal performance, which can add to the overall cost.
  • Vendor Lock-in: Once you invest in Oracle Database, switching to another database system can be challenging and costly.
  • Steep Learning Curve: Oracle Database has a steep learning curve, particularly for beginners or those without prior experience with the system.
  • Licensing: Oracle Database has complex licensing agreements that can be confusing and may require additional costs for certain features or usage scenarios.
  • Limited Editions: Some advanced features and capabilities are only available in specific editions of Oracle Database, which may require additional licensing fees.
  • Resource Intensive: Oracle Database can consume significant system resources, especially when dealing with large datasets or complex queries.
  • Support: While Oracle provides comprehensive support for its database, some users may find the support options and response times to be less satisfactory.

Cases when Oracle Database does not work

Does not work
  1. Insufficient system resources: Oracle Database may not work properly if the system does not have enough memory, CPU power, or disk space to accommodate the database workload. In such cases, the database may experience performance issues, slow response times, or even crash frequently.
  2. Hardware failure: If there is a hardware failure, such as a disk failure or a network card malfunction, Oracle Database may not function correctly. These hardware failures can lead to data corruption, data loss, or a complete system outage, rendering the database unusable.
  3. Software bugs: Like any complex software system, Oracle Database may contain software bugs that can cause it to malfunction. These bugs can manifest in various ways, such as incorrect query results, unexpected errors, or system crashes. Oracle regularly releases patches and updates to address these issues.
  4. Network issues: Oracle Database relies on network connectivity to communicate with clients, application servers, and other database instances in a distributed environment. If there are network connectivity problems, such as high latency, packet loss, or firewall misconfigurations, the database may become inaccessible or experience significant performance degradation.
  5. Incorrect configuration: Improperly configuring Oracle Database can lead to operational issues. For example, misconfiguring memory parameters, storage settings, or networking parameters can adversely affect database performance, scalability, or reliability.
  6. Insufficient backup and recovery strategy: If a proper backup and recovery strategy is not in place, Oracle Database may not be able to recover from data corruption, accidental data deletions, or other catastrophic events. Without adequate backups, critical data and the entire database may be permanently lost.

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