Cajethan Che Numfor
Mount Prospect,IL
Summary
Experienced Oracle and SQL Server Database Administrator with 8+ years of expertise in managing onpremises and cloud-based databases, including Azure SQL migrations. Strong background in high availability solutions (RAC, Data Guard, Always On), performance tuning, database security, and automation. Proven ability to optimize enterprise-scale databases, lead cloud migration projects, and ensure 99.9% uptime for mission-critical systems.
Overview
9
9
years of professional experience
Work History
Oracle & SQL Server Database Administrator
Department of Innovation and Technology, State of Illinois
07.2024 - Current
- Administer and optimize Oracle and SQL Server databases supporting state-wide critical applications
- Lead on-prem to Azure cloud migration efforts, ensuring seamless transitions with minimal downtime
- Manage high availability configurations including Oracle Data Guard, RAC, and SQL Server Always On
- Perform performance tuning, reducing query execution times by 30-50%
- Implement backup and disaster recovery strategies, ensuring zero data loss
- Automate database maintenance tasks using PowerShell, T-SQL, and PL/SQL scripts
- Collaborate with cross-functional teams to enhance database security, monitoring, and compliance
Database Analyst / Information Systems Specialist
Oregon DOC
07.2023 - 01.2025
- Led SQL Server and Oracle database administration, supporting large-scale applications
- Designed and implemented ETL workflows for secure and efficient data transfers
- Managed SFTP file transfers and ensured secure data movement across environments
- Optimized database performance, reducing query execution times and improving system efficiency
- Conducted database refreshes and ensured real-time data mirroring across environments
Senior Oracle Database Administrator
Park Nicollet Clinic & Specialty Center
05.2020 - 07.2023
- Spearheaded Oracle-to-Azure database migrations, ensuring minimal downtime
- Implemented Advanced Security (TDE, Data Masking, AAA Principles), reducing security risks by 80%
- Maintained 99.9% uptime for enterprise-critical databases, leveraging OEM 13c
- Designed and maintained Data Guard environments, ensuring high availability and disaster recovery
- Led performance tuning initiatives, reducing query execution times by 40%
- Automated backup and recovery processes using RMAN, reducing backup times from 8 hours to 45 minutes
- Trained and mentored DBA teams, increasing operational efficiency by 30%
Oracle Database Administrator
US Bank
02.2016 - 04.2020
- Managed and upgraded SQL Server 2008-2016 and Oracle 10g-19c databases
- Led on-prem to cloud database migrations using Azure Data Studio and SSMA
- Configured and administered Oracle RAC, Data Guard, and ASM for high availability
- Developed PowerShell scripts for automated database tasks, improving operational efficiency
- Designed and executed disaster recovery plans, ensuring zero data loss
Education
B.S. - Engineering Sciences
Cameroon Christian University
Oracle Database Administration -
DBA University
Chicago, ILAzure Database Administrator Certification (DP-300) -
03.2025
Skills
- Azure SQL Database
- SQL Managed Instance
- Azure Data Studio
- Data Migration Assistant (DMA)
- SSMA
- Oracle 10g-19c
- SQL Server 2008-2022
- Azure SQL
- Oracle RAC
- Data Guard
- Always On Availability Groups
- Query tuning
- AWR
- ADDM
- Execution Plans
- Indexing strategies
- TDE
- Data Masking
- Auditing
- Access Control
- RMAN
- Data Pump
- SQL Server Backup Strategies
- PowerShell
- T-SQL
- PL/SQL
- Shell Scripting
Websites
Accomplishments
- Optimized Azure SQL databases, reducing costs by 20% through indexing and performance tuning.
- Led a multi-terabyte data migration from on-prem SQL Server to Azure, ensuring zero downtime.
Technical Skills
Azure SQL Database, SQL Managed Instance, Azure Data Studio, Data Migration Assistant (DMA), SSMA, Oracle 10g-19c, SQL Server 2008-2022, Azure SQL, Oracle RAC, Data Guard, Always On Availability Groups, Query tuning, AWR, ADDM, Execution Plans, Indexing strategies, TDE, Data Masking, Auditing, Access Control, RMAN, Data Pump, SQL Server Backup Strategies, PowerShell, T-SQL, PL/SQL, Shell Scripting
Timeline
Oracle & SQL Server Database Administrator
Department of Innovation and Technology, State of Illinois
07.2024 - Current
Database Analyst / Information Systems Specialist
Oregon DOC
07.2023 - 01.2025
Senior Oracle Database Administrator
Park Nicollet Clinic & Specialty Center
05.2020 - 07.2023
Oracle Database Administrator
US Bank
02.2016 - 04.2020
B.S. - Engineering Sciences
Cameroon Christian University
Oracle Database Administration -
DBA University
Azure Database Administrator Certification (DP-300) -
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