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Tiavina RatovonanaharyTR

Tiavina Ratovonanahary

DBA Oracle & Cloud Architect OCI (Certified 2025)

€200/day
Fianarantsoa, MG
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Tiavina

Need an expert to secure your data or migrate your infrastructure to the Cloud?

Independent consultant from ENI, I specialize in database administration (DBA) and Cloud architecture, with a particular focus on the Oracle (11g, 12c, 19c) and OCI (Oracle Cloud Infrastructure) ecosystem.

Why work with me?

Certified Expertise 2025: I hold the latest Oracle certifications: OCI Architect Associate, Foundations Associate, and Autonomous Database Specialist.

Security & Service Continuity: Expert in backup and recovery strategies using RMAN, I guarantee the integrity of your critical data.

Cloud Modernization: I assist you in configuring compute instances, optimizing your databases on the Cloud, and automating with Oracle APEX or Bash.

Dual DBA/DevOps Skill: Mastery of Linux, Docker, and Git environments for seamless integration into your development cycles.

My areas of intervention:

DBA Administration: Installation, configuration, SQL/PLSQL query optimization, and operational maintenance of Oracle environments.

Cloud Architecture (OCI): Design of resilient infrastructures, security in hybrid environments, and deployment of autonomous databases.

Network Management: TCP/IP, DNS, DHCP configuration, and protocol security (HTTP/HTTPS).

Availability: Immediate for short or long-term assignments, remote or hybrid.

Contact me today to discuss your infrastructure and data challenges!
  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • ARATO
    Oracle DBA Apprentice
    TECH
    January 2025 - January 2026 (1 year)
    Fianarantsoa, Madagascar
    As an Oracle DBA apprentice, I managed the operational aspects of an Oracle Database environment (11g, 12c, 19c). My role involved configuring compute instances on Oracle Cloud Infrastructure (OCI) and securing critical data using RMAN in a hybrid environment. I actively participated in service continuity by optimizing Bash scripts and SQL/PLSQL queries. This experience allowed me to combine Linux system administration with modern Cloud architecture.
    Oracle 19 Oracle 12c Oracle PL/SQL OCI Oracle Database
  • (ENI Fianarantsoa)
    Database Administration
    January 2022 - January 2023 (1 year)
    - Installation of Oracle 19c software on Linux
    • - Creation of the Database with the Northwind schema
    • - Backup and restore with RMAN
    • - Use of Oracle APEX for order management

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Education

  • MASTER 2 IN COMPUTER SCIENCE
    ENI University (National School of Computer Science) LRR High School (Raherivelo Ramamonjy High School)
    MASTER 2 EN INFORMATIQUE
  • Certified Foundations Associate
    Oracle Cloud Infrastructure
    2025
    Certified Foundations Associate

Skill set

Categories