Lingan Patil

Oracle DBA Lead and Oracle DBA SME with 13+ years of experience managing 24x7 business-critical Oracle database environments across banking, enterprise, and cloud-hosted platforms. Expert in Oracle RAC, ASM, Data Guard, RMAN, Exadata/ExaCC, Oracle 19c upgrades, migrations, patching, cloning, backup and recovery, performance tuning, and HA/DR operations. Proven experience leading DBA teams, supporting large-scale environments, mentoring engineers, coordinating on-call operations, and delivering production stability with minimal downtime.

Sr. Advanced Services Engineer, CSS Tech Delivery / Oracle DBA Lead - Oracle Corporation - Bangalore, India

(2021-09)

• Lead Oracle DBA operations for high-stakes production environments, supporting RAC, ASM, Data Guard, RMAN, patching, cloning, migrations, backup/recovery, and DR activities.
• Troubleshoot critical Oracle database issues including RAC node eviction, Data Guard issues, performance degradation, backup failures, recovery scenarios, and availability incidents.
• Perform Oracle Database and Grid Infrastructure upgrades and migrations from 11g/12c to 19c, including cloud-hosted database environments.
• Build and administer RAC, ASM, standalone databases, and physical standby databases; configure and test switchover procedures for DR drills.
• Execute RAC and standalone database patching using OPatch and patchsets; support ExaCC/Exadata DomU patching and maintenance activities.
• Maintain RMAN backup and recovery strategies, database cloning, refreshes, logical backups, physical backups, and production-to-test database copies.
• Configure HSM, Oracle Wallet, and TDE in RAC environments; validate database security, roles, privileges, and access control requirements.
• Use AWR, ADDM, EXPLAIN PLAN, and EXPLAIN ANALYZE to identify database performance bottlenecks and tune SQL/database operations.
• Assign and prioritize DBA work, mentor junior DBAs, coordinate on-call rotations, drive knowledge sharing, and ensure HA/DR plans are documented and tested.

Oracle DBA Subject Matter Expert - IBM India Pvt. Ltd. - ABN AMRO Bank - Bangalore, India

(2016-01 - 2021-09)

• Served as Oracle DBA SME for a banking environment with 700 databases ranging from 300 GB to 48 TB and a 35-member DBA team.
• Led and supported mission-critical Oracle database upgrades and migrations with a focus on minimal downtime and production stability.
• Designed and supported highly available database architectures across geo-located data centers using Disaster Recovery and High Availability failover practices.
• Performed Oracle database patching, cloning, configuration, RMAN backup/recovery, Data Pump refreshes, and production-to-nonproduction database refreshes.
• Installed and configured Oracle Data Guard; supported primary and standby database administration, switchover testing, and DR readiness.
• Researched and resolved complex Oracle issues using My Oracle Support/Metalink, AWR, ADDM, and database troubleshooting techniques.

Operations Senior Analyst / Oracle DBA - Accenture - Bangalore, India

(2014-07 - 2015-12)

• Supported Oracle database operations for 411 databases ranging from 200 GB to 500 GB as part of a 14-member team.
• Handled database monitoring, backup validation, incident troubleshooting, refreshes, user access support, and operational escalations.
• Supported RMAN, Data Pump, database cloning, performance monitoring, and routine Oracle database maintenance activities.

Oracle and MS SQL DBA - Tata Consultancy Services - Zimmer - Delhi, India

(2013-09 - 2014-07)

• Supported 586 Oracle and MS SQL databases ranging from 200 GB to 5 TB as part of an 18-member team.
• Performed production database monitoring, backup/recovery activities, issue resolution, and database maintenance tasks across Oracle and SQL Server environments.

Oracle and MS SQL DBA - Info Services through IBM - ABB India - Bangalore, India

(2012-02 - 2013-08)

• Supported 255 Oracle and MS SQL databases ranging from 10 GB to 550 GB as part of a 5-member DBA team.
• Provided database administration support for backups, restores, monitoring, user management, tablespaces, and day-to-day production database operations.

Bachelor of Engineering - Information Science - Visvesvaraya Technological University (VTU)