Oracle DBA

Polar IT Services; St. Louis (MO); Hybrid; USD 100,000 - 140,000; Full time

Job summary

Polarits is seeking an experienced Oracle DBA to join our Saint Louis team in a hybrid role. You will install, configure, and maintain Oracle databases (11g/12c/19c) on Linux/Unix, manage storage, and ensure high availability.

You will design backup and recovery strategies with RMAN, tune performance using AWR/ADDM/ASH, and support Data Guard and RAC deployments, while enforcing security and compliance across environments. On-call rotation is required.

Qualifications

• Experience administering Oracle databases on Linux/Unix.
• Proficient in RMAN backup and recovery strategies.
• Strong performance tuning and SQL optimization skills.
• Experience with Oracle Data Guard and RAC.
• Security and compliance with database access controls and patching.

Responsibilities

• Provide 24x7 on-call support for production databases.
• Troubleshoot database incidents and perform root cause analysis.
• Coordinate with application and infrastructure teams during releases.
• Maintain SOPs, runbooks, and operational documentation.
• Install, configure, and administer Oracle databases (11g, 12c, 19c) in development, test, UAT, and production environments.

Skills

Oracle DBA

SQL tuning

High availability design

Linux/Unix admin

Tools

RMAN

AWR/ADDM/ASH

Oracle RAC

Data Guard

Oracle OEM

Job description

Location: Saint Louis, Hybrid (must be in the Saint Louis area)

Must be on our W2

Must Have Technical/Functional Skills

Database Administration

• Install, configure, and maintain Oracle databases (11g / 12c / 19c) on Linux/Unix platforms
• Perform database creation, configuration, cloning, and decommissioning
• Manage tablespaces, datafiles, redo logs, control files, and storage growth
• Perform routine maintenance activities such as space management and housekeeping

Backup & Recovery

• Design and implement backup and recovery strategies using RMAN
• Perform database restores and recoveries (complete and point‑in‑time recovery)
• Test backup and recovery procedures regularly to ensure DR readiness
• Handle archive log management and retention policies

Performance Monitoring & Tuning

• Monitor database performance using AWR, ADDM, ASH, OEM
• Identify and resolve performance issues related to CPU, memory, I/O, SQL
• Tune SQL queries, indexing strategies, and optimizer statistics
• Manage Oracle initialization parameters for optimal performance

High Availability & Disaster Recovery

• Implement and support Oracle Data Guard (Physical / Logical Standby)
• Manage Oracle RAC environments for high availability
• Perform planned and unplanned failover and switchover operations
• Support DR drills and business continuity testing

Security & Compliance

• Manage database users, roles, profiles, and privileges
• Ensure database security standards and compliance requirements are met
• Implement auditing, password policies, and access controls
• Apply security patches and CPU updates
• Perform Oracle patching, PSU/CPU upgrades, and version upgrades
• Support database migrations across platforms or versions
• Coordinate with application and infrastructure teams during releases
• Follow change management and release processes

Production Support

• Provide 24x7 on‑call support for production databases
• Troubleshoot database incidents and perform root cause analysis
• Work with vendors and internal teams to resolve complex issues
• Maintain SOPs, runbooks, and operational documentation
• Install, configure, and administer Oracle databases (11g, 12c, 19c) in development, test, UAT, and production environments
• Monitor database health and availability; proactively identify and resolve issues
• Execute backup and recovery operations using RMAN, including restore and point‑in‑time recovery
• Manage database storage: tablespaces, datafiles, redo logs, archive logs, and control files
• Ensure optimal database performance through SQL tuning, index management, statistics gathering, and parameter tuning
• Monitor and tune database resources using AWR, ADDM, ASH, OEM, and performance views
• Implement and support High Availability and Disaster Recovery solutions using Oracle RAC and Data Guard
• Perform Data Guard switchover and failover operations during planned and unplanned events
• Apply Oracle patches, CPUs, PSUs, and perform version and platform upgrades
• Support database migrations across environments and Oracle versions
• Manage database security, including users, roles, privileges, profiles, and auditing
• Ensure compliance with security standards, operational policies, and regulatory requirements
• Troubleshoot production incidents, perform root cause analysis, and implement preventive measures
• Coordinate with application, system, and network teams during deployments and outages
• Automate routine DBA tasks using shell scripting where applicable
• Maintain DBA documentation, SOPs, and operational runbooks
• Participate in 24x7 support and on‑call rotations for critical production systems.

Thanks & Regards,