Subit Saha
Oracle DBA | Oracle APPS DBA
Kolkata
Summary
Oracle Certified DBA with over 10 years of experience in managing complex Oracle E-Business Suite (EBS), Core DBA operations, and Oracle Cloud Infrastructure (OCI) administration. Proven expertise in EBS upgrades, database migrations, OCI deployment, RAC, ASM, RMAN, Data Guard, and performance tuning. Adept at supporting global enterprise clients across the US, UK, Europe, and Asia, with a strong focus on high availability, security, and automation.
Overview
11
11
years of professional experience
5
5
Certification
Work History
Senior Oracle Apps DBA / OCI Administrator
IBM India
Kolkata
09.2021 - Current
- Company Overview: Client: BBC UK – Capita TV Licensing & SGN
- Lead DBA for BBC UK Modernization Project: Application upgrade from 11i to 12.2.10 / R12.1.3 to R12.2.11.
- Database upgrade from 11g to 19c (19.16) with minimal downtime.
- Designed and implemented TLS 1.2, OKTA SSO, and Java Web Start (JWS).
- OCI administration: migrated on-prem DBs to OCI, implemented DataSafe, and optimized performance on cloud-hosted environments.
- Managed 30+ environments including RAC/Non-RAC for production, test, and development.
- Prepared high-level/low-level design documents and handled end-to-end implementation and support.
- Client: BBC UK – Capita TV Licensing & SGN
Oracle Applications DBA – Technical Lead
Cognizant Technology Solutions
Kolkata
11.2017 - 09.2021
- Company Overview: Client: PepsiCo Global
- Supported multi-country Oracle EBS deployments (US, Canada, UK, Europe).
- Handled cross-platform migration of EBS and databases (Solaris → SuSe Linux, HP-UX → OEL Linux).
- Performed OATM migrations, RMAN backups, Data Guard setup, and DR drills.
- Executed multiple DB/application patching and cloning for development and testing.
- Client: PepsiCo Global
Oracle Applications DBA
Tata Consultancy Services
Kolkata
11.2014 - 11.2017
- Company Overview: Client: UTC Fire & Security
- Administered 6-node shared EBS application servers and 3-node RAC databases.
- Implemented backup strategies using RMAN, NetBackup, and ensured environment stability.
- Managed application patching, cloning, concurrent manager troubleshooting, and performance tuning.
- Client: UTC Fire & Security
Education
Bachelor of Technology - Electrical & Electronics Engineering
Siddaganga Institute of Technology
Skills
- Oracle EBS (11i, R1213, R122x)
- Oracle Database 10g/11g/12c/19c
- RAC
- ASM
- Data Guard
- Oracle Cloud Infrastructure (OCI)
- Autonomous DB
- RMAN
- OEM 12c/13c
- AWR
- ADDM
- Backup & Recovery
- DR Strategy
- Platform & Cross-Platform Migrations
- TLS
- Java Web Start (JWS)
- SSO (OKTA)
- Shell Scripting
- SQL Developer
- MobaXterm
- PuTTY
- NetBackup
- Rubrik
- Linux
- Solaris
- AIX
- HP-UX
- RHEL
- OEL
- Six Sigma Green Belt Certified
Tools And Technologies
RHEL, OEL, Solaris, HP-UX, AIX, Linux, OEM 12c/13c, SQL Developer, RMAN, NetBackup, DataSafe, Rubrik, VNC, Reflection, MobaXterm, PuTTY, ServiceNow, Jira
Certification
- Oracle Certified Professional – DBA
- Oracle Cloud Infrastructure (OCI) & Autonomous DB Certified
- Six Sigma Green Belt
Project Highlights
- OCI Cloud Migration: Led OCI migration including VCN setup, DB provisioning, firewall configuration, and connectivity validation.
- Data Center Migration: Participated in large-scale DC migration – executed discovery, firewall, pre-validation, and dry runs.
- Volume Reduction & Optimization: Initiated schema purging, FND concurrent data cleanup, and reclaimed TBs of space.
Timeline
Senior Oracle Apps DBA / OCI Administrator
IBM India
09.2021 - Current
Oracle Applications DBA – Technical Lead
Cognizant Technology Solutions
11.2017 - 09.2021
Oracle Applications DBA
Tata Consultancy Services
11.2014 - 11.2017
Bachelor of Technology - Electrical & Electronics Engineering
Siddaganga Institute of Technology
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