I am Detail-Oriented, certified Oracle database administrator with more than 15 years of experience managing enterprise level databases.
My experience includes database infrastructure setup (Data Guard), database backup using RMAN, database recovery, disaster recovery, database upgrade, database migration, database refreshes, database patching and user management in a collaborative team environment.
Worked in a team that has been frequently praised for successfully completing major projects such as migrating enterprise-wide databases between operating system platforms. Reliable team player with a diligent and positive attitude to solve any database related technical problems.
Building RAC Databases on Grid Infrastructure
RMAN Backup and Recovery
Manage Oracle ASM
Database upgrade and patching
Root Cause Analysis and problem solving
Manage SAP databases running on oracle
Manage SAP HANA Databases
Database Management System
Oracle
Scripting
Disaster Recovery
Backup
Recover Data Recovery Software
Migration
Md. Isbat R.
Chittagong, Bangladesh
$30/hr
5.0
22 jobs
🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 - Delivering nearly a 𝗱𝗲𝗰𝗮𝗱𝗲 𝗼𝗳 𝗢𝗿𝗮𝗰𝗹𝗲 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 and 𝗼𝘃𝗲𝗿 𝟭𝟱+ 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗰𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 across the 𝗢𝗿𝗮𝗰𝗹𝗲 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝘀𝘁𝗮𝗰𝗸 - covering development, integration, implementation, consulting, and AI-driven enterprise automation for mission-critical systems.
Whether you're modernizing Oracle ERP, building enterprise web applications, integrating third-party systems, or creating AI assistants that interact securely with your data, I deliver scalable, secure, and production-ready solutions.
📊 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝗧𝗿𝗮𝗰𝗸 𝗥𝗲𝗰𝗼𝗿𝗱
• Performed process discovery, feasibility analysis, and solution design for automation candidates across multiple business functions.
• Architected AI agent development and automation workflows using n8n and custom bots.
• Integrated global CRM platforms (including NetSuite, Salesforce, and Creatio).
• Designed and delivered end-to-end EBS to POS integrations for NIKE, ADIDAS, LEVI'S, and PUMA retail operations in Bangladesh (Oracle EBS R12.2.x).
• Built and deployed RPA solutions in UiPath Studio + Orchestrator, improving process automation by 40%
• Core team member on an Oracle Fusion Cloud Supply Planning implementation.
• Developed multiple customized systems across government and enterprise clients.
• Delivered inbound/outbound integrations across EBS and Fusion Cloud using OIC, VBCS, FBDI, and BI Publisher.
• Completed multiple end-to-end data migration projects.
• Top Rated with a 100% Job Success Score on Upwork.
🏢 𝗖𝗼𝗿𝗲 𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
• 𝗢𝗿𝗮𝗰𝗹𝗲 𝗙𝘂𝘀𝗶𝗼𝗻 𝗖𝗹𝗼𝘂𝗱 𝗣𝗮𝗮𝗦 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: OIC, Fusion Cloud APIs, VBCS, PCS, FBDI, HDL, BI Publisher, OTBI
• 𝗥𝗣𝗔 & 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: UiPath Studio, UiPath Orchestrator, Process Discovery, n8n AI automation
• 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Oracle APEX, Oracle ADF, OAF, Oracle Forms/Reports 6i–12c, PHP, Laravel
• 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 & 𝗪𝗲𝗯 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: REST/SOAP APIs, Web Services, Microservices, ORDS, Oracle SOA Suite
• 𝗜𝗻𝘁𝗲𝗿𝗳𝗮𝗰𝗲𝘀 & 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻𝘀: Standard APIs, Open Interface tables, data conversions, WebADI
• 𝗢𝗿𝗮𝗰𝗹𝗲 𝗘-𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗦𝘂𝗶𝘁𝗲 (𝗘𝗕𝗦 𝗥𝟭𝟮.𝟮.𝘅): Purchasing, iProcurement, iSupplier, Sourcing, Inventory, Landed Cost Management (LCM), Order Management, Advanced Pricing, AP, AR; P2P and O2C cycles; RICEW development (Reports, Interfaces, Conversions, Extensions, Workflows)
• 𝗢𝗿𝗮𝗰𝗹𝗲 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝗖𝗹𝗼𝘂𝗱 (𝗢𝗜𝗖): real-time and event-driven integrations, ORDS, inbound/outbound interfaces, middleware
• 𝗣𝗟/𝗦𝗤𝗟 & 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: SQL, PL/SQL, Oracle Database 10g–19c, BI/XML Publisher, Oracle Workflow, WebLogic Server administration
📋 𝗠𝘆 𝗘𝗻𝗴𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗣𝗿𝗼𝗰𝗲𝘀𝘀
Every architecture is unique. My approach centers on deep technical assessment, clear risk identification, and structured remediation:
▪️Discovery & Architecture Audit: Map out dependencies, evaluate configuration drifts, and identify security or compliance gaps.
▪️Strategic Blueprinting: Deliver a pragmatic roadmap aligning technical execution with regulatory and operational requirements.
▪️Execution with Zero Disruption: Implement, migrate, or harden the stack using proven change-management strategies to maintain business continuity.
▪️Documentation & Knowledge Transfer: Provide clear, audit-ready SOPs and technical documentation so your internal teams can maintain operations cleanly.
✉️ 𝗟𝗲𝘁'𝘀 𝗧𝗮𝗹𝗸
If you are looking to modernize Oracle systems, integrate fragmented platforms, or build a scalable enterprise application ecosystem, I can help you design and deliver it end-to-end.
Click the “𝗜𝗻𝘃𝗶𝘁𝗲” or “𝗠𝗲𝘀𝘀𝗮𝗴𝗲” button. Please include a brief summary about the current systems you need assistance with. If you have new ideas or projects, it helps to have a short summary of what the system or process needs to do.
Oracle Database
Oracle Programming
Oracle Cloud
Oracle APEX
Oracle E-Business Suite
Oracle PLSQL
Oracle Integration Cloud Service
API Integration
Oracle Fusion Applications
Oracle NetSuite
NetSuite Development
Enterprise Resource Planning
Solution Architecture
Software Architecture & Design
Data Migration
ETL Pipeline
Artificial Intelligence
Data Extraction
n8n
Enterprise Software
Zeeshan A.
Muscat, Oman
$20/hr
4.5
41 jobs
16+ years delivering scalable solutions across Oracle (certified), PostgreSQL, MySQL, SQL Server, MS Access, and more. Trusted by long-term clients for reliable, high-quality work.
Expertise:
• PL/SQL, tuning, optimisation, migrations (Oracle + multi-DB)
• Advanced Sql queries, procedures and functions development
• ETL/ELT pipelines, Python automation
• Odoo customization, modules, APIs
• Data analytics and processing
• Data cleaning and converting to other forms like csv, sql , json etc
• Make custom CRUD applications
• Biometric sync (ZKTeco/BioTime → Odoo HR/Payroll)
• Oracle Forms & Reports development/maintenance; PHPRunner rapid web apps; desktop DB (MS Access, LibreOffice Base)
• Legacy Oracle: Install & configure Forms 6i on Windows 11 (unsupported workaround)
Results: Zero-touch payroll for 500+ users; 70%+ faster queries.
Available for short and long-term partnerships. Message me to discuss your project!
Oracle Database
SQL
Database Administration
Microsoft Access
MySQL
Oracle PLSQL
Xlinesoft PHPRunner
Oracle Forms
Database Programming
Stored Procedure Development
SQL Programming
Data Analysis
Data Migration
Data Cleaning
Looker Studio
Jorge Vinsencio F.
Caracas, Venezuela
$10/hr
5.0
3 jobs
I'm system engineer with 19 years working at the computer area, I have worked as
database administrator at companies of telecommunications, bank and government. I
have worked many years with Oracle Database 9i, 10g and 11g, Sqlserver 2000 and
Postgresql Database.
Leader of database administration Oracle 11g and Sql Server,
Monitoring of performance, tuning of sql and processes,
Installation of oracle patches, installation and monitoring of
Oracle Data Guard configuration, Implementation of backup
Strategy with recovery manager (RMAN) and export /import
Tools, resolutions of database vulnerabilities,
Implementation of Security politics PCI DSS V3 standard.
Design of change plans for production environments,
Resolutions of issues in production environment, user support,
Oracle and Sqlserver Database Migration, Implementation of
Oracle database duplicate processes (cloning).
Database Administration
PostgreSQL Programming
Amazon Web Services
Oracle PLSQL
Oracle Cloud
Oracle APEX
Oracle RAC
Oracle Data Guard
Oracle Database Administration
Oracle GoldenGate
Rongping S.
Chengdu, China
$60/hr
5.0
171 jobs
✅ I am a Top Rated Plus Database Consultant on Upwork with over 100 5-star client reviews, backed by 13+ years of enterprise experience and a 100% commitment to your success.
Instead of just keeping the lights on, I solve complex customer-facing database bottlenecks, architect zero-downtime migrations, and make massive performance improvements for mission-critical systems. My career spans managing over 8,000 production databases and 500TB+ of data for fast-growing SaaS platforms, FinTech companies, and global enterprise organizations.
⭐ Here's what I can bring to your project (Validated by vendors and trusted by hundreds of clients):
✅ Deep Multi-Engine Expertise: Mastery across PostgreSQL, MySQL, SQL Server, MongoDB, and Oracle.
✅ Cloud Database & RDS Architecture: Extensive hands-on experience migrating, scaling, and optimizing managed database workloads across AWS (RDS/Aurora), Google Cloud (Cloud SQL), and Azure databases.
✅ AI & Vector Database Architecture: Expert in designing scalable schemas for massive AI workloads and tuning vector extensions (e.g., pgvector with HNSW & IVF indexing) for millisecond-latency cosine similarity searches.
✅ Extreme Performance Tuning: Rapidly diagnosing CPU spikes, slow queries, and index inefficiencies to restore lightning-fast performance.
✅ High Availability & DR: Architecting bulletproof clusters (Always On, InnoDB Cluster, Patroni, HADR) to guarantee zero data loss.
✅ Vendor-Certified & Client-Proven: My technical methodologies are not just theoretical—they are backed by premium official certifications from AWS, Oracle, Cisco, PMP, TOGAF, and ITIL, and have successfully empowered hundreds of businesses globally.
✅ Enterprise Security & Compliance: Strict adherence to data security best practices when handling sensitive financial and operational data.
✅ 24/7 Ultra-Reliable Communication: You will never be left in the dark; you will always know the exact status of your production systems.
⭐ Why you should choose me over other freelancers:
✅ Broad Vision, Deep Focus: Unlike single-engine DBAs, my multi-platform expertise allows me to choose the absolute best architectural solutions for your specific business needs.
✅ Over-Delivering: This is core to my work ethic. I don't just close tickets; I identify root causes and optimize your infrastructure so the problem never happens again.
✅ Earning Your Trust: My primary goal is not just completing a contract, but becoming the reliable technical partner your business can always count on.
Let's discuss how we can secure, optimize, and scale your data infrastructure. Send me an invite, and let's get to work!
Oracle
PostgreSQL
MySQL
MariaDB
MongoDB
Microsoft SQL Server
SQL
Database Optimization
MySQL Programming
Database Administration
Database Design
Query Tuning
Database Maintenance
Amazon RDS
PostgreSQL Programming
Hassan N.
Faisalabad, Pakistan
$20/hr
4.9
189 jobs
I will design and develop oracle application as per your requirement within shortest possible time.
I'm an Oracle Certified Professional (OCP) and I've strong professional experience & expertise of database project design and develop in Oracle
I have over 9 years experience in the area of IT: systems analysis, solution design, development, quality testing and shift control to production environment. Experience in analysis and solutions development in DB Oracle (PL / SQL) and SQL Server. Experience in user support.
Area of Specialization
==============
✔ Oralce PL/SQL Programming
✔ Oralce SQL Programming
✔ Oracle Forms(All Types)
✔ Oracle Reports(All Types)
✔ Database Designing
✔ Query Handling
✔ Database Functions
✔ Database Procedures
✔ Database Packages
✔ Database Views
✔ SQL,PL/SQL complex queries
✔ Graphical User Interface (GUI)
✔ Data Guard Configuration
✔ RMAN Active Duplication
✔ Database Performance Tuning
✔ RMAN backup and recovery
✔ Oracle Forms and Reports Developer (6i, 10g,12c)
✔ Oracle Web Logic Server 12c
✔ Oracle Fusion Middle-ware 12c
✔ Windows, Linux, AIX Operating System
✔ Real application cluster(RAC)
✔ Database migration and upgrading
✔ Linux shell script
✔ Oracle automatic storage(ASM)
✔ SQL Server
✔ Apache tomcat
✔ Http server, haproxy, Lvm linux
During my work experience I have Design multiple system in Oracle like
-Hospital Management System,
-Human Resource Management System,
-Inventory Management System,
-Fabric Management System,
-Accounts Management System,
-Order Management System,
-Point Of Sale,
-Export Management System,
-School Management System.
I have gained excellence in the field of systems, controls and analysis.
My experience in automating manual tasks has been proven to be highly effective. I have also gained experience in system/process design and implementation.
My passion is to help my clients solve financial issues and deliver the best quality of work they require.
I look forward to a long-term relationship with my clients. Hope to hear from you soon!
Oracle Database
Oracle Programming
Apache Tomcat
Oracle PLSQL
Linux System Administration
Oracle APEX
Database Programming
Mobile App
Data Mining
Oracle Database Administration
Oracle RAC
Oracle Forms
Prototype JavaScript Framework
WordPress Development
Microsoft Power BI
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At A Glance: Oracle Database Developers
In the modern technological world, the efficient management and storage of data has become an integral part of many businesses and industries. Everyday access to various technologies both online and off produce a flood of data that businesses use and analyze to predict customer and market behavior. This data has to be stored, managed, and manipulated rapidly and efficiently in order to keep up with the speed of business that has become the status quo in today’s marketplace. Oracle Database has been a viable database solution since 1977 and continues to provide powerful software tools to businesses and companies.
Oracle Database developers and programmers are highly-skilled, computer-literate professionals with an in-depth knowledge of the Oracle Database system and its many associated software tools and programs. Oracle developers can help you and your business manage and organize your data in highly efficient ways through the Oracle system, while programmers can take your data and help you create and build systems from the ground up that are optimized to your business needs. Both developers and programmers are skilled data management and analysis experts who can provide an objective view and impartial consultation in regards to the way you manage and store your data. Working with a freelance Oracle Database developer or programmer gives you and your company access to cost-effective and powerful management tools that can be implemented to improve the way any type or size of company does business in the digital world.