KRISHNA YOGESH
Mysore
Summary
Accomplished Oracle Exadata DBA with expertise in database upgrades and migrations, previously at Mindpool Technologies. Proficient in AWS and Oracle RAC, ensuring zero downtime and optimal performance. Demonstrated leadership in managing over 3000 databases, leveraging problem-solving skills to enhance system reliability and security.
Overview
15
15
years of professional experience
Work History
Oracle Exadata DBA
Mindpool Technologies
Mysore
06.2025 - Current
- Applied PSU to Grid Infrastructure & RDBMS Homes
Upgrading Database from 12.2 to 19c .
Migration of Databases to Other DC .
Database Backup & Recovery.
DG Gap Resolution,Switchover,Resync,Rebuild.. - Working on the Change Request for the Prod Deployments
- Daily Clone Refreshes from PROD to Lower environment
Principal Software Engineer
Oracle Solution Services (India) Pvt. Ltd.
Bengaluru
09.2020 - 03.2025
- Exadata Administration of x5,x6,x7,x8,x9.
- Dimm, Disk, Flash card, PSU, Motherboard Replacement.
- Applied PSU to Grid Infrastructure & RDBMS Homes.
- Upgrading Database from 12.2 to 19c.
- Migration of Databases to Other DC.
- Database Backup & Recovery.
- DG Gap Resolution, Switchover, Resync, Rebuild.
- Support over 3000 Databases on Oracle 11g, 12c & 19C version running on Exadata X5, X6, X7 and X8 boxes.
- Annual data restore test from prod to the temp database / LLE Refresh from Prod to Non Prod in RAC, PDB cloning, flash back, Database upgrade from 12.1 to 12.2 and 19c.
- Coordinate with Oracle Dispatch Team & Field engineer to support all types of hardware maintenance Activities like CPU, Memory DIMM and Hard Disk / Flash Disk replacements, PDU, IB switch Port.
Database Administrator Lead
Epsilon
Bengaluru
07.2016 - 06.2020
- Installation and configuration of Oracle 12c RAC on Rhel Server.
- Maintenance of production database server, ensuring zero downtime.
- Installation Of single instance database on the AWS EC2 instance.
- Configuring the OSB to S3 Bucket on EC2 Instance.
- Configuration of standby database for Disaster Recovery.
- Creating users and roles to the end users.
- Checking cluster log files and cluster service health.
- Ensuring health of database by monitoring alert log and archive generation.
- Dataguard switchover & switchback.
- Configured the listeners and aliases to set up Transparent Application Failover (TAF).
- Handle database objects during migration - Triggers, Constraints, Sequences, LOBs, Partitions.
- Troubleshoot issues during migration - performance, ORA-1555, timeouts, data validation etc.
- Managed and configured AWS services such as EC2, S3, RDS, VPC, Route 53, and IAM.
- Provisioned and managed compute instances using EC2, including setting up AMIs, configuring security groups, and attaching EBS volumes.
- Created and managed VPCs, subnets, and routing tables for optimal network architecture.
- Automated backups and scheduled tasks using AWS Lambda and CloudWatch Events.
- Implemented Identity and Access Management (IAM) roles, policies, and multi-factor authentication (MFA) to enhance security.
- Set up disaster recovery (DR) plans using services like AWS Backup, S3 Cross-Region Replication, and RDS Multi-AZ for high availability.
- Set up and managed AWS Route 53 for DNS management and domain routing.
Senior Software Engineer
Oracle
Bengaluru
06.2013 - 07.2016
- Worked with Exadata platinum implementation Deploying the EM agents on the Engineered systems through Oracle Gateway Server.
- Configuring the ASR on the engineer Machine.
- Global Support Engineer (GCS) (level 3) for Metalink, whereby I accept support request in the form of SR and help in solving customer issues.
- Support to wide customer close to 300,000 +.
- Specialized in troubleshooting and solving memory tuning, ORA-4030/4031, ORA-00600 / 7445, utilities (like expdp / impdp, sql loader, logminer etc), corruption, undo etc.
- Monitoring the Exadata Servers & Troubleshooting.
- Deploying the EM agents on the Engineered systems through Oracle Gateway Server.
- Configuring the targets in the OEM like Databases, ASM, Storage Nodes, IB switches.
Database Administrator
Fedility Investments
Bengaluru
08.2010 - 05.2013
- Installation and configuration of Oracle 10g RAC on Linux.
- Configuring OCFS2 and ASM for the same.
- Upgrading Oracle10g RAC from 10.2.0.1 to 10.2.0.4.
- Checking cluster log files and cluster service health.
- Ensuring health of database by monitoring alert log and archive generation.
- Configuration of standby database for Disaster Recovery.
- Monitoring the standby database.
- Configuring Dataguard broker.
- Configured the listeners and aliases to set up Transparent Application Failover (TAF).
- Cloning the database using RMAN.
- Schema Refresh from Prod to Dev.
Education
Bachelors of Commerce -
Mysore University
06.2006
Skills
- ORACLE Database
- Exadata
- RAC
- RMAN
- Dataguard
- Performance tuning
- AWS
- RDS
- EC2
- S3
- IAM
- OCI
- DB Provisioning
- Compute migration
- Postgresql
- Autosys
- Service now
Languages
- Kannada
- Hindi
- Telugu
- English
Timeline
Oracle Exadata DBA
Mindpool Technologies
06.2025 - Current
Principal Software Engineer
Oracle Solution Services (India) Pvt. Ltd.
09.2020 - 03.2025
Database Administrator Lead
Epsilon
07.2016 - 06.2020
Senior Software Engineer
Oracle
06.2013 - 07.2016
Database Administrator
Fedility Investments
08.2010 - 05.2013
Bachelors of Commerce -
Mysore University