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Christopher User

@christopheruser17

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Database Administrator at PT. Rintis Sejahtera supporting Oracle systems processing 20M+ transactions daily.

Indonesia

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At PT. Rintis Sejahtera (Prima Group), I support production Oracle databases in a payment-switching environment processing 20M+ transactions per day. My work includes monitoring availability, housekeeping, and troubleshooting.

I implemented and manage Oracle Data Guard, Fast-Start Failover, Oracle CMAN, and GoldenGate for automatic failover and real-time replication. I also use AWR, ASH, and ADDM to investigate performance issues and recover or rebuild databases when needed.

At PT. Lancar Wiguna Sejahtera (Lawson Indonesia), I pulled and validated data for reporting and built a PHP and Laravel web app for submission and proposal processes. Earlier, I handled and verified transaction data at Widya Dharma 2 Pontianak.

I added Oracle DBA and performance-tuning training to my hands-on experience, including Oracle 19c diagnostics and RMAN backup and recovery. I graduated from Universitas Pradita with a degree in Information Systems.

Experience

Work history, roles, and key accomplishments

Current

Database Administrator (DBA)

Current

PT. Rintis Sejahtera (Prima Group)

Oct 2024 - Present (2 years)

Supported 100+ production Oracle databases processing 20M+ transactions per day, implementing Data Guard, Fast-Start Failover, CMAN, and GoldenGate for high availability. Used AWR/ASH/ADDM for performance tuning and recovery, and added Redis caching to reduce database load.

Oracle Database Dataguard Fast Start Failover Goldengate CMAN AWR ASH ADDM Redis Performance Optimization Database Recovery ETL

IT Data Mining Intern

PT. Lancar Wiguna Sejahtera (Lawson Indonesia)

Feb 2024 - Jun 2024 (4 months)

Pulled and validated data using SQL and Oracle Database to support internal reporting. Built a PHP and Laravel web app to manage submission and proposal processes, reducing manual data collection efforts.

SQL Oracle Database PHP Laravel Data Validation

Data Entry

Widya Dharma 2 Pontianak

Jan 2022 - Jun 2022 (5 months)

Handled reception and disbursement data entry, ensuring accurate and consistent records across reporting tables. Verified and organized transaction data for further reporting and analysis.

Data Entry Data Verification Data organization

Education

Degrees, certifications, and relevant coursework

Belogix

Training, Oracle Performance Tuning

Completed Oracle Performance Tuning training covering Oracle 19c architecture, RMAN backup and recovery, and performance diagnosis using AWR, ASH, and ADDM.