Bidhan Mandal
Karimpur Rishi Arabinda Pally
📞 +91-9051397200 / +91-9832112290 · ✉️ bidhan381_mandal@yahoo.com

Accomplished Oracle-certified Database Administrator and cloud practitioner with 17+ years of hands-on experience in enterprise database engineering, high-availability architectures, performance tuning, crisis management, and cloud solutions. I design, stabilise, and optimise large Oracle environments (9i→19c), deliver resilient backup/recovery strategies, and drive measurable improvements in reliability and operational efficiency across production and test estates.

Snapshot

Specialities: Oracle performance tuning, RMAN & Data Pump, RAC, Data Guard, EBS (Apps Tech), cloning/migrations, capacity planning, automation, and storage optimisation.

Cloud & Certifications: AWS Solutions Architect; Oracle 19c Certified; multiple Oracle Cloud & Fusion certifications, including AI/Foundations and Financials implementation proficiencies.

Scale: Supported large data warehouses (multi-TB), global multi-market deployments and mission-critical banking/ERP systems.

Approach: Root-cause driven, automation-first, mentor-oriented — focused on reducing incidents, improving job runtime and eliminating recurring space/wait issues.

Professional Highlights

Wizertech Informatics Pvt. Ltd. (2015–Present): Core DBA & Apps DBA for clients including KOPT & Eveready. Led installs/patching (9i→19c), RMAN/Data Pump automation, Data Guard, EBS support, performance tuning and concurrent program migrations.

PCS Technology Ltd. (2014–2015): Core DBA for KOPT — installations, RAC, Data Guard and continuous monitoring.

Carnation Industries / SMSRC / Zenith / HCL / Natural Technologies: Delivered production support, RMAN cloning, storage and archive strategies, Finacle/E-Bank support and 24×7 operations for banking and ERP clients.

Selected Technical Skills

Databases: Oracle 9i / 10g / 11g / 19c

High Availability & DR: RAC, Data Guard, standby management, RMAN duplication

Tools & Diagnostics: AWR / ADDM / ASH analysis, SQL Trace, Explain Plan, Toad, SQL Developer

Administration: Backup & recovery, cloning, capacity planning, storage tuning, EBS Apps Tech support

OS: Red Hat Linux, Windows Server families

Education & Certifications (selected)

B.A., Calcutta University

Oracle 19c Certified Associate (2022) | OCA/OCP (10g, 9i)

AWS Solutions Architect (2021)

Oracle Cloud / Fusion & AI Foundations certifications (multiple, current)