Paul da Cruz

Paul is a senior Database Architect and DBA with more than two decades of experience supporting, designing, and optimizing mission-critical Oracle environments across the telecoms, banking, financial services, and international enterprise sectors. His expertise includes Oracle RAC, Dataguard, high-availability architectures, large-scale data warehousing, and performance-critical systems, with a deep knowledge of Oracle internals and multi-version Oracle technologies. He is frequently engaged to resolve high-impact production issues, remediate complex architectural challenges, and improve performance in environments handling terabytes of data and operating 24×7.

His work has delivered significant measurable benefits—including large-scale storage optimisation, increased system stability, and substantial performance improvements for major regional and global clients. Paul's background includes extensive international exposure, with long-term engagements across South Africa and Europe supporting multi-country deployments. His leadership experience includes guiding DBA teams, providing technical mentorship, coaching developers, and delivering formal Oracle training.

Senior Oracle Database Administrator at Knowledge Integration Dynamics (2025-06 – Present)

Wesbank – Storage Optimisation Project

• Analysed full Oracle infrastructure for three primary applications.
• Mapped storage utilisation across arrays and databases.
• Proposed architectural changes reducing real-time IO and overall storage footprint.
• Recommended table optimisations and consolidation strategies.
• Identified long-standing data retention issues and resolved them.
• Delivered storage savings of 620 TB out of 1,560 TB.

Senior Oracle Database Administrator at Amdocs

Vodacom Critical Engagement

• Assisted with a 24×7 mobile network performance monitoring database that had halted due to severe performance issues.
• Conducted deep-level infrastructure and database analysis.
• Identified incorrect fix implementation and escalated correction to Vodacom leadership.
• Engaged with global Oracle Support, challenging incorrect recommendations.

Oracle DBA at Teoco / Amdocs (2015-11 – 2025-05)

• Oracle DBA supporting Telco PM & FM platforms for 20+ international clients.
• Managed production and test databases across multiple time zones.
• Delivered strong performance tuning and troubleshooting.
• Primary DBA for one customer, trouble-ticket support for others.
• Recommended and implemented Oracle CMAN to solve client security consideration

Senior Oracle Database Administrator at Vodacom (2010-09 – 2015-10)

• Continued support from prior engagement, expanding into new systems.
• Performed database upgrades to 11g.
• Implemented and supported RAC and DR environments.
• Enabled Dataguard-based DR with query offloading.
• Migrated monitoring from Enterprise Manager to Grid Control.

Oracle Database Administrator at LoyaltyPlus (2006-08 – 2015-08)

• Managed production databases across global locations.
• Performed upgrades, production support, and monitoring.
• Supported dev teams with splitting/merging databases.
• Built a cost-saving DR hot standby without Dataguard.
• Maintained RMAN backups and DR monitoring.

Senior Oracle E-Business Suite DBA at FirstRand Group (2009-02 – 2010-08)

• Senior Apps DBA for Oracle HRMS 12.1.1 implementation across group companies.
• Configured DMZ E-Business, internet-facing iRecruitment, and reverse proxy.
• Implemented zero-data-loss DR solution without Oracle Dataguard.
• Trained a junior DBA with no prior Oracle/Unix experience.
• Collaborated with Oracle on high-volume performance tuning.

Oracle Database Administrator at Vodacom (2004-02 – 2009-01)

• Initially contracted to resolve severe performance issues in a Network Quality Data Warehouse.
• Implemented partitioned, parallel, re-org-free architecture.
• Designed database-driven workload orchestration like Concurrent Manager.
• Provided production and development DBA support.

Oracle ERP Apps DBA at Mutual & Federal (2003-06 – 2004-05)

• Oracle ERP Apps DBA for upgrade from 11.5.3 to 11.5.9.
• Upgraded database and Oracle Application Server.
• Delivered performance tuning and developer coaching.

Oracle DBA Team Lead at Arivia (2003-01 – 2003-05)

• Oracle DBA Team Lead overseeing 6 Iocore DBAs and 4 client DBAs.
• Strong focus on Oracle Advanced Replication across large, distributed environments.
• Delegated work and provided technical direction.

Oracle Database Administrator at Tiscali (2002-04 – 2002-12)

• Supported Oracle Financials across 12 European countries.
• Managed production and test databases applied patches.
• Upgraded Oracle Financials 11.0.3 → Oracle 8i ahead of schedule.

Oracle Database Administrator at GoudenGids (2001-04 – 2002-03)

• Supported 24×7 production databases (VMS/NT/Unix).
• Migrated Oracle 7.3 → 8.1.7 and RAC 7.3.4 → 8.1.6.
• Delivered multinational data-warehouse implementation.
• Conducted performance tuning and created automated refresh tools.

Oracle Training Instructor at CS Holdings (1999-01 – 2001-12)

Oracle SA Training Partner. Delivered official Oracle training courses.

• Oracle 8i DBA (5-day)
• Oracle 8i Performance Tuning (4-day)
• Introduction to Oracle SQL/PLSQL (5-day)

Oracle Database Administrator at Vodacom (1999-09 – 2001-03)

• Designed data warehouse for network statistics analysis.
• Built custom ETL, implemented backup strategy.
• Tuned performance for 1-hour latency processing.
• Ensured 24×7 production uptime.

Oracle Database Administrator at Iscor (1989-07 – 1999-08)

• Developed and maintained process-flow models.
• Performed Oracle DBA duties.
• Completed Oracle certification.