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Hamid Belallia

@hamidbelallia

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Senior Oracle DBA specializing in migrations, high availability and tuning.

United Kingdom

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What I'm looking for

I seek senior DBA roles focused on Oracle migrations, HA solutions and performance tuning, with opportunities to mentor teams and work in secure, collaborative environments.

I am a highly energetic senior Oracle DBA with extensive experience in database design, implementation, migration, administration, maintenance, upgrading and backup and recovery.

I have led large upgrades and migrations across multiple Oracle versions (8i through 19C), implemented high-availability solutions including RAC, Data Guard, ASM and GoldenGate, and supported 24/7 environments in banking, government, health and enterprise sectors.

My work includes database cloning, RMAN backup and recovery, performance tuning using AWR/ADDM, OEM monitoring, PL/SQL development and WebLogic deployments, as well as mentoring and transitioning teams onshore and offshore.

I am self-motivated, proactive and experienced in incident and service request management tools, and I bring a practical, results-focused approach to delivering robust, secure and highly available database solutions.

Experience

Work history, roles, and key accomplishments

Oracle DBA

NEC Software Solutions

Dec 2025 - Jan 2026 (1 month)

Installed NEC products into Oracle 19c, performed constant database cloning from live to test, and provided Oracle DB and application support for Sun Solaris and Tomcat environments in a UK government revenue & benefits project.

Oracle Cloning Oracle Solaris Tomcat ASM

Oracle DBA

DAERA

Jun 2021 - Sep 2025 (4 years 3 months)

Upgraded Oracle Spatial databases from 12c to 19c, migrated databases from VMware to OLVM, and performed daily deployments, OEM monitoring and BAU DBA support on Windows Server 2019.

Oracle 12C Oracle Database 19c ASM OEM VMWare

Oracle DBA

IT Alliance

Aug 2016 - May 2021 (4 years 9 months)

Led upgrades from 10.2.0.5 to 12.1 and to 19c, implemented Data Guard and RAC with ASM for high availability, and supported daily WebLogic deployments and OEM monitoring for health sector clients.

Oracle 10g Oracle 10G Oracle 12C RAC ASM OEM

Oracle DBA

KNEIP Communication

Dec 2015 - May 2016 (5 months)

Managed 24/7 Oracle 11g RAC/ASM/ODA environments, performed database migrations between datacentres, backups/restores, and ODA appliance provisioning for banking operations.

ASM RAC Data Migration Backup Linux

Transition Oracle DBA

Capgemini

Aug 2015 - Nov 2015 (3 months)

Led Oracle knowledge transfer and transition to an offshore team for 850 instances, conducting daily KT workshops, shadowing, and providing on-call support bridging France and India.

ASM RAC Offshore Transition KT Workshops Linux

Oracle DBA & GoldenGate Consultant

Ervia

May 2015 - Jul 2015 (2 months)

Implemented real-time replication using GoldenGate 12c from Oracle EBS to a data warehouse for multiple schemas and supported Linux-based high-availability environments.

Goldengate ASM RAC Replication Linux High Availability

Oracle DBA

BSO Belfast

Jan 2015 - Apr 2015 (3 months)

Designed physical data structures for healthcare data warehouse, extracted complex XML data, performed upgrades from 11g to 12c, and developed disaster recovery plans.

Oracle 12C Data Warehousing XML Disaster Recovery Linux Database Upgrades

Oracle DBA

Bournemouth University

Jan 2014 - Dec 2014 (11 months)

Performed quarterly Oracle patching, implemented Oracle Data Guard for high availability, created engineering databases, and managed RMAN refreshes and OEM monitoring for education systems.

Oracle 12C ASM Oracle RMAN OEM Patching Linux

Oracle DBA

Maersk

Aug 2012 - Dec 2013 (1 year 4 months)

Supported SOA database project lifecycles, implemented GoldenGate for high availability and migrations, led KT to offshore DBAs, and applied quarterly patches across environments.

ASM RAC Goldengate Data Migration OEM Patching

Oracle DBA

Capgemini (Schneider Electric)

Jan 2012 - Jun 2012 (5 months)

Performed day-to-day Oracle operations, audits (FGA), upgrades from 10g to 11gR2, extensive performance tuning including SAP environments, and implemented quarterly patching across multi-OS platforms.

Oracle 10g Oracle 10G ASM Performance Tuning Patching Linux

Oracle DBA

United Health Group

Aug 2011 - Dec 2011 (4 months)

Supported extensive estate (~5300 databases) with RMAN, patching, OEM monitoring, agents installation and BAU incident management using ITG for health insurance environments.

Oracle 10g Oracle 10G OEM RAC Goldengate Incident Management

Oracle DBA

Getronics / Banque de la Poste

Jan 2010 - Jul 2011 (1 year 6 months)

Led Informix-to-Oracle migrations to 10g/11g on AIX and Solaris, implemented Data Guard, Grid Control, and performed security auditing and performance tuning for banking systems.

Performance Tuning ASM RAC Oracle Solaris

AS/400 Developer & Oracle DBA

Fruit of the Loom

Sep 1991 - Sep 2009 (18 years)

Upgraded and maintained Oracle 8/9/10g databases across manufacturing plants, implemented RMAN backups, performed performance tuning, and trained junior DBAs during a 18-year tenure across UK, Ireland and Morocco.

Oracle 10g Oracle RMAN Performance Tuning Data Pump ASM AS 400