Rariz — Sr. Oracle DBA, optimization & maintenance, ex-Oracle employee.

Expertise in Database Management and Administration.

Last verified on March, 2026

Core Skills

Oracle Database

Database Administration

Bio Summary

- 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.

Technical Skills

Databases & Management Systems / ORM	Database Administration, Oracle Database
Cloud Platforms, Services & Computing	Azure
Operating Systems	Debian, IBM AIX, Linux, Unix
Methodologies, Paradigms and Patterns	ITSM
Other Technical Skills	AIX, Exadata, Grid Control, Maintenance and Repair, Oracle Data Guard, Oracle RAC, Performance Tuning, Red Hat Linux, RMAN

Experience

Oracle DBA, United Nations International Computing Centre

May 2020 - July 2023

Providing end-to-end resolutions for complex technical problems related to the performance, installation, recommended maintenance, use, and repair/workarounds for Oracle databases. Performing regular patching, upgrades, and disaster recovery setups for databases hosted on on-premise machines, Exadata machines, and Azure cloud machines.

Senior Oracle DBA, VAUBAN IT RO for Vodafone Shared Services Romania

January 2019 – June 2020

Providing end-to-end assistance and high-level resolutions for complex technical problems related to
the installation recommended maintenance, use, and repair/workarounds for Oracle databases

Senior Principal Advanced Support Engineer, Oracle Corporation (Romania)

May 2016 – January 2019

Delivering post-sales support and solutions to the Oracle customer base
Providing high-level resolutions of complex technical problems related to the installation,
recommended maintenance, use, and repair/workarounds for Oracle products
Assist customers in building backup and recovery strategies, assessing databases performance,
Setup disaster recovery infrastructure, patching and upgrading databases hosted on-premise
machines, Exadata machines, Azure cloud-hosted machines

Senior Technical Analyst, Oracle Corporation (Romania)

May 2014 – May 2016

Provide technical and functional assistance to high-profile Oracle customers around the globe.
Manage and resolve Service Requests logged by customers (internal and external) on Recovery.
Manager product (RMAN) and disaster recovery product (data guard)
Working with the development team on product improvement programs (testing, BETA programs)

Oracle database administrator - 2nd level support engineer for ITSM, Ericsson Telecommunications (Romania)

September 2013 – May 2014

Administrating the BMC Remedy ITSM Oracle databases (production, acceptance, and test
instances)
RMAN Backup and restore procedures, performance analysis, tuning, patching, and updates for
databases

Oracle database administrator, Intesa Sanpaolo Bank (Romania)

March 2009 – September 2013

Administrating the core banking Oracle databases (production, development, and test)
RMAN Backup and restore procedures, performance analysis, tuning, patching, and updates for
databases
Bi-annual testing of the disaster recovery solution
AIX, Debian, and RedHat Linux servers administration

Network administrator, ROMEXPO SA

June 2001 – March 2009

Management and maintenance of all company LANs and connections with WAN from both
hardware and software point of view
Architects the topology and configuration for additional cable runs (CAT6, FO), patching, hardware upgrade, troubleshooting for bandwidth, and high availability
RedHat Linux servers administration (corporate email, firewall, DNS)

IT Manager, IT Manager

December 2000 – March 2014

Managing a team of 4 system engineers and 1 web developer to ensure the environment availability and business continuity in our area of responsibility
Planning the stages of different infrastructure projects and how each affects the business.
Coordinating the team to ensure the human resource on projects depending on importance and
severity
Reporting to the top management and the clients when needed on the progress of the projects.
Evaluating each project stage and performing final evaluation once completed.

System engineer, ROMEXPO SA

May 1999 – December 2000

LAN/WAN management (domains, users, groups, permissions, printers), hardware service/configuration (computers, modems, hubs, switches, routers)
Software implementation and configuration, installing the operating system for both servers and
workstation
In charge of the management of the Service Level Agreements with suppliers of the services (ISP, service, warranty)

Education

Ecologic University from Bucharest – Management Faculty

October 1993 – June 1997 (Romania)

Bachelor's degree in economic science – financial and administrative management

Training

Oracle – SAP Centre –Walldorf / Germany

August 2017 (Oracle Migration Bootcamp)

Migration of large databases using the O2O tool

Using Oracle Enterprise Manager Cloud Control 12c

November 2016 (Oracle University - Romania)

Administration training for OEM Cloud Control 12c

Using Oracle Enterprise Manager Cloud Control 13c

November 2016 (Oracle University - Romania)

Administration training for the new OEM Cloud Control 13c

Oracle Database 12c – Clusterware Administration Ed 1

November 2016 (Oracle University - Romania)

Clusterware installation and administration for Oracle databases 12c

Oracle Database 12c – Performance management and tuning

March 2016 (Oracle University - Romania)

Performance tuning training for Oracle databases 12c

Oracle Linux 7 – System Administration

February 2016 (Oracle University - Romania)

Installation and basic administration for the OEL version 7

Oracle Grid Infrastructure 11g – Manage Clusterware and ASM ed.3

January 2016 (Oracle University - Romania)

Clusterware installation and administration
ASM installation and administration

Exadata Database Machine administration workshop ed.3

September 2015 (Oracle University - Romania)

A workshop that explains the main administration tasks for an Exadata machine

Oracle Database 12c – RAC administration ed.1

August 2015 (Oracle University - Romania)

RAC installation and administration training on Oracle 12c version

Oracle Database 11g – Oracle Secure Backup ed.1

June 2015 (Oracle University - Romania)

OSB product installation and administration on Oracle 11g version

Oracle Database 12c – Data Guard administration

May 2015 (Oracle University - Romania)

Data guard installation and administration training on Oracle 12c version

Exam 1Z0-052 - Oracle Database 11g – Oracle Certified Associate

March 2015 (Oracle University - Romania)

Oracle Database Certified Administrator

Oracle Database 12c – Backup and recovery workshop

March 2015 (Oracle University - Romania)

Recovery manager workshop product setup and performance on Oracle 12c version

Oracle Database 12c – High availability new features ed.1

January 2015 (Oracle University - Romania)

New high-availability features introduced in Oracle 12c

Exam 1Z0-051 - Oracle Database 11g – SQL Fundamentals

November 2014 (Oracle University - Romania)

Mandatory exam, the first step in the path to OCP certification

Oracle Database 11g – Administration Workshop II

May 2010 (Oracle University - Romania)

Database administration training

Oracle Database 11g – Administration Workshop I

April 2010 (Oracle University - Romania)

Database administration training

Oracle Database 11g – SQL Fundamentals

February 2010 (Oracle University - Romania)

First steps in the Oracle databases world

Microsoft Certified Professional Courses for Windows 2003 Servers

June - October 2007 (ROMSYS - Romania)

Training for the Microsoft Certified System Administrator track

RH300 – RedHat rapid track course

February 2003 (ROMSYM DATA - Romania)

Training for the RedHat engineer certification

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