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Mohamed Ayoub Ben HalimaMA

Mohamed Ayoub Ben Halima

Consultant DBA Oracle

€250/day
Tunis, TN
15+ years
Oracle Database
Database administration
Performance improvement
RMAN
Script Shell

Average response time: 1 hour

Freelancer profile translated to English.
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About Mohamed Ayoub

Senior Database Administrator with over 15 years of experience in managing complex Oracle, PostgreSQL, and SQL Server environments, I assist companies in controlling and evolving their critical information systems. My expertise covers the automation of recurring tasks—reducing manual interventions by more than 60%—performance optimization, proactive monitoring, and security enhancement.

Specialized in database administration and supervision, advanced SQL tuning, and process automation (archiving, purging, backups), I contribute to reducing downtime, accelerating operations, and improving platform reliability. With a solid background in the telecom, banking, and IT services sectors, I also leverage my skills in project management, technical audits, and team leadership to ensure lasting and measurable results.
Insurance
Banking and Financial Services
Software Publishing
Telecommunications

  • Arabic

    Native or bilingual

  • French

    Fluent

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • ADFI NEW TECH
    Founder & Manager
    CONSULTING AND AUDITS
    May 2024 - Today (2 years and 1 month)
    Tunis, Tunisia
    - Ooredoo : Consultant DBA Oracle and backup :
    As an Oracle DBA and backup consultant, my main task is to integrate the DBA and Backup engineering team:
    Ensure the availability of OOREDOO databases.
    • Daily monitoring of the status of critical databases.
    • Managing the archiving and purging of partitions automatically.
    • Automating Oracle database administration tasks.
    • Automate repetitive tasks.
    • Management of cloud control 12c and 13c (monitoring databases, ensuring its availability, integrating and migrating databases)
    • Ensure the backup of critical databases as well as application servers (using dataprotector and networker tools): monitoring and integration.
    • Ensure the availability of RAC environments as well as standalone environments.
    • Troubleshooting and resolving database-related issues
    • Installation of Oracle software as well as instance configuration.
    • Database optimization (detecting queries causing performance issues and providing recommendations to optimize them, including rewriting queries)
    • Ensure the point of contact with Oracle support
    • SQL Server database administration
    • Installation and configuration of PostgreSQL databases
    Technical tools:Oracle (11g/12c/19c/21c), SQL Server (2019 & 2022), PostgreSQL (15/16/17), SQL, PL/SQL, AWR, RMAN, Shell, Toad, expdp, impdp, transportable tablespaces.
    **Environments**: Windows, Linux (Redhat)



    - MITIGAN CIB:
    As an IT Manager Consultant, I take care of the entire IT infrastructure of the company:
    • Manage the IT infrastructure and database of the C2BS solution
    • Manage the IT infrastructure of the company headquarters
    • Manage the DQM solution
    **Technical tools**: Shell, Spring boot, Angular, python, Docker, FW Sophos, MySQL, Oracle
    **Environments**: Windows Server, Linux (Redhat, CentOS)
    Oracle Database Script Shell SQL Database administration SQLServer
  • NUMERYX
    Database Administration Consultant
    DIGITAL AND IT
    February 2023 - Today (3 years and 4 months)
    Tunis, Tunisia
    - Ooredoo : Consultant DBA Oracle and backup :
    As an Oracle DBA and backup consultant, my main task is to integrate the DBA and Backup engineering team:
    • Ensure the availability of OOREDOO databases.
    • Daily monitoring of the status of critical databases.
    • Managing the archiving and purging of partitions automatically.
    • Automating Oracle database administration tasks.
    • Automate repetitive tasks.
    • Management of cloud control 12c and 13c (monitoring databases, ensuring its availability, integrating and migrating databases)
    • Ensure the backup of critical databases as well as application servers (using dataprotector and networker tools): monitoring and integration.
    • Ensure the availability of RAC environments as well as standalone environments.
    • Troubleshooting and resolving database-related issues
    • Installation of Oracle software as well as instance configuration.
    • Database optimization (detecting queries causing performance issues and providing recommendations to optimize them, including rewriting queries)
    • Ensure the point of contact with Oracle support
    • SQL Server database administration
    • Installation and configuration of PostgreSQL databases
    Technical tools:Oracle (11g/12c/19c/21c), SQL Server (2019 & 2022), PostgreSQL (15/16/17), SQL, PL/SQL, AWR, RMAN, Shell, Toad, expdp, impdp, transportable tablespaces.
    **Environments**: Windows, Linux (Redhat)


    - UPCA Project:

    • Optimize a list of queries that take a very long time (more than 20 minutes) or that crash
    **Technical tools**: MariaDB, SQL.
    SQLServer Oracle Database Database administration Script Shell PostgreSQL
  • MITIGAN CIB
    IT Manager
    BANKING AND INSURANCE
    August 2018 - February 2023 (4 years and 6 months)
    Tunis, Tunisia
    - Project Credit Bureau CBS:
    * As a DBA, my task was to manage the database of the CBS solution:
    • Ensure the installation, creation and management of the backup database.
    • Manage and improve RMAN scripts.
    • Ensure the proper execution and performance of the database.
    • Write advanced queries to extract statistics.
    * As IT manager, my task was to manage system, network and security tasks related to the solution and the company.
    • Manage IT-related problems with the support of an external firm.
    • Ensure the point of contact with an audit firm in its mission of technical audit of the company and the environment of the CBS solution.
    • Manage the security of the company (apply the company's security procedure)
    • Manage VPN connections for employees and external service providers.
    * As project manager, my task was to manage the validation and acceptance phase of the solution:
    • Manage the solution testing and validation team.
    • Ensure the role of SPOC with the solution provider in monitoring bugs and improvements.
    • Manage the acceptance phase of the CBS solution.
    • Assist in the presentation of the network and security architecture of the solution to customers.
    **Technical tools**: Oracle 12c, SQL, PL/SQL, AWR, RMAN, Shell.
    **Environments**: Windows, Redhat

    - Project DQM Suite (Data Quality Management Suite):
    As a project manager, my main task was to manage the project:
    • Manage the project (design, development, and validation)
    • Benchmark on DQM algorithms and best practices.
    • Implement duplicate detection and merge algorithms
    • Preparation and generation of DQ indicators
    • Installation of the tools and support of customers in its use
    **Technical tools**: Mysql, Spring boot, Angular, JPA, Eclipse, python, Docker.
    **Environments**: CentOs
    Project management Oracle Database Script Shell Dataguard RMAN
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Education

  • PostgreSQL Administration for Oracle DBAs
    UDEMY
    2025
    PostgreSQL Administration for Oracle DBAs
  • Complete Microsoft SQL Server Database Administration Course
    UDEMY
    2024
    Complete Microsoft SQL Server Database Administration Course
Check out Mohamed Ayoub's education

Skill set

PL/SQL
SQL
SQLServer
PostgreSQL
Project management
Dataguard
Java
PHP

Categories