Ganesh Devadhe

Ganesh Devadhe

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Sr. Database Administrator Oracle | Exadata | MySQL | MariaDB | PostgreSQL| Shell Scripting | AWS | Python + Flask | Azure Cloud
Wrocław, Województwo dolnośląskie, Poland

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Jobs verified_user 0% verified
  • Freelance  SelfEmployed
    Senior Database Administrator
    Freelance SelfEmployed
    Sep 2025 - Current (1 year)
    Role & Responsibility : Oracle DBA (L3), PostgreSQL DBA(L3),  Performing day‑to‑day administration and maintenance of PostgreSQL databases.  Cloning Development, Test, and UAT environments with production data based on customer requirements.  Troubleshooting PostgreSQL backup issues related to Commvault.  Diagnosing and resolving Patroni high‑availability (HA) issues.  Performed Disaster Recovery (DR) testing to ensure databases meet security and compliance requirements.  Managing Patroni HA configurations, including ETCD‑related problems.  Refreshing PostgreSQL databases using both logical and physical backup methods.  Configuring PgBackRest and addressing issues associated with backup and restore operations.  Handling a wide ra
  • Visa
    Senior Database Administrator
    Visa
    Jun 2024 - Feb 2026 (1 year 9 months)
    Role & Responsibility : Oracle DBA (L3), PostgreSQL DBA(L3),  Installed and upgraded PostgreSQL databases from versions 9.x through 13.x.  Performed day‑to‑day PostgreSQL administration and maintenance tasks.  Troubleshot PostgreSQL backup issues related to Commvault.  Diagnosed and resolved Patroni high‑availability (HA) issues.  Handled a wide range of PostgreSQL operational issues as part of daily support activities.  Managed and resolved PostgreSQL‑related issues in Azure cloud environments.  Performed Oracle non‑production database refreshes.  Worked on Oracle GoldenGate bi-directional replication setups.  Configured and maintained PostgreSQL pglogical replication.
  • Luxoft
    Senior Database Administrator
    Luxoft
    Jun 2023 - May 2024 (1 year)
    Role & Responsibility : Oracle DBA (L3), PostgreSQL DBA(L3),  Installed and upgraded PostgreSQL databases from versions 9.x to 13.x.  Performed day-to-day PostgreSQL administration and operational support.  Troubleshot PostgreSQL backup issues involving Commvault.  Diagnosed and resolved Patroni high availability (HA)–related issues.  Handled a wide range of PostgreSQL operational and performance issues.  Managed and resolved PostgreSQL related issues on the Azure cloud platform.  Performed Oracle non-production database refresh activities.
  • Nityo Infotech
    Senior Lead
    Nityo Infotech
    Oct 2022 - May 2023 (8 months)
    Role & Responsibility : Oracle DBA (L3), PostgreSQL DBA(L3), MySQL DBA (L2)  Installation and upgradation of PostgreSQL from 9.X to 13.X versions.  Day to day activity.  BAU tasks.  Installed various extensions in PostgreSQL like timescale DB.  Minor and Major patching activity.  MySQL 5.1.63/72 and MariaDB 5.5.52  MySQL code review and query tuning.  MySQL instance refresh from PROD database backups.  Created shell script to automate code deployment.  Used Heidi SQL for code deployment.  MongoDB  Log rotation/ maintenance ( mongos, mongod, config . etc)  Segregation of duties ( User Management – designing User roles and responsibilities )  Disk usage, CPU, Memory check Alerting  Database Hardening ( Check
  • Ensono
    Sr. Database Administrator
    Ensono
    Apr 2020 - Sep 2022 (2 years 6 months)
    • 12 years of experience in ORACLE Database Administration on Production and Development Databases. • Exadata Administration. • Exadata environment monitoring using OEM. • Database creation and refresh in non-prod environment. • Working closely with Oracle FE engineer while H/W failure. • Performance related issues handled. • Compression using EHCC to reclaim space from database. • High Availability RAC 9i/10g/11g/12c/18c • Restoration of RAC database for testing environment. • Configuration of Data Guard. • Planning switch over and switch back activity. • Applying PSU and one off patch in testing and prod environment. • Monitoring the health check of RAC Database. • Handled 12c container and non-container databases issues • Experience in
  • Vodafone
    Oracle Database Administrator
    Vodafone
    Jun 2018 - Apr 2020 (1 year 11 months)
    • 8+ years of experience in ORACLE Database Administration on Production and Development Databases. • Exadata Administration. • Exadata environment monitoring using OEM. • Database creation and refresh in non-prod environment. • Working closely with Oracle FE engineer while H/W failure. • Performance related issues handled. • Compression using EHCC to reclaim storage from database. • High Availability RAC 11g/12c • Restoration of RAC database for testing environment. • Configuration of Data Guard and monitoring using OEM. • Planning switch over and switch back activity. • Applying PSU and one off patch in testing and prod environment. • Monitoring the health check of RAC Database. • Handled 12c container and non-container databases issues
  • Cognizant
    Oracle Database Administrator
    Cognizant
    Dec 2014 - Jun 2018 (3 years 7 months)
    • 7+ years of experience in ORACLE Database Administration on Production and Development Databases. • Exadata Administration. • Exadata environment monitoring using OEM. • Database creation and refresh in non-prod environment. • Working closely with Oracle FE engineer while H/W failure. • Performance related issues handled. • Compression using EHCC to reclaim storage from database. • High Availability RAC 11g/12c • Restoration of RAC database for testing environment. • Configuration of Data Guard and monitoring using OEM. • Planning switch over and switch back activity. • Applying PSU and one off patch in testing and prod environment. • Monitoring the health check of RAC Database. • Handled 12c container and non-container databases issues
  • e
    Oracle Database Administrator
    eFluence IT Services
    Apr 2014 - Dec 2014 (9 months)
    • High Availability • Configuration of Data Guard and monitoring using OEM. • Planning switch over and switch back activity. • Applying PSU and one off patch in testing and prod environment. • Monitoring the health check of RAC Database. • Experience in capacity planning, space management, database upgrades/migration. • Migrated Non-ASM Single Instance to ASM RAC Instance. • 12c Enterprise Manager Administrator • Agent installation various methods. • Creating incident rules and configure the emails alert. • Exadata Administration. • Creating databases using DBCA in exadata machine. • Storage migration in exadata.
  • Wipro Infotech
    Oracle DBA
    Wipro Infotech
    Jan 2011 - Apr 2014 (3 years 4 months)
    • 3+ years of experience in ORACLE Database Administration on Production and Development Databases. • Install Oracle Clusterware (as part of Oracle’s grid infrastructure) or upgrade from earlier version • Work with Oracle Automatic Storage Management and Oracle Storage Management Cluster File management. • Create synchronized standby database using Oracle Data Guard. • Reliably archive and store data with Oracle recovery manager. • Configuring Oracle 12c Control Enterprise Manager for management of an Oracle Maximum availability environment. • Extensive experience in administering, troubleshooting, supporting, analyzing & improving performance of Oracle Databases. • Interacted with end users. • Experience in administering, tuning and monito
Education verified_user 0% verified
  • New Arts Commerce  Science College Ahmednagar
    BCA, Computer Science
    New Arts Commerce Science College Ahmednagar
    Jan 2007 - Dec 2010 (4 years)