Senior Oracle DBA (Multi-Database Expertise)

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Job Title: Senior Oracle DBA (Multi-Database Expertise)

Location: Minneapolis, MN (Onsite)

Experience Required: 10+ Years

Employment Type: Contract

Position Overview

We are seeking a highly experienced Senior Oracle DBA with deep expertise in Oracle database administration and strong working knowledge of DB2 and MongoDB. This role is responsible for managing mission-critical, high-availability database environments across on-premises and cloud platforms.

The ideal candidate will bring strong hands-on experience in HA/DR, performance tuning, backup & recovery, security hardening, and enterprise database monitoring.

Key Responsibilities

Oracle Database Administration (Primary Focus)

• Administer and support Oracle 11g/12c (legacy) and 19c/21c (primary production) environments.

• Manage high availability solutions including RAC, Data Guard (Physical & Logical), Active Data Guard, and GoldenGate.

• Perform advanced backup and recovery operations using RMAN, Flashback technologies, and PITR.

• Lead performance tuning initiatives using AWR, ADDM, ASH, SQL Tuning Advisor, and execution plan analysis.

• Manage Multitenant architecture (CDB/PDB), ASM, Grid Infrastructure, and Oracle Net Services.

• Implement database security controls including TDE, Database Vault, Audit Vault, and encryption standards.

• Support partitioning strategies (Range, List, Hash, Composite).

• Perform patching, upgrades, migrations, and capacity planning.

Secondary Database Support

• Provide intermediate support for IBM DB2 (LUW 10.5/11.x) including HADR, backup/recovery, RUNSTATS, REORG, and performance monitoring.

• Support MongoDB environments including replica sets, indexing strategies, backup methods, and basic sharding concepts.

• Basic administrative exposure to Sybase ASE environments.

Infrastructure & Platform Support

• Support database platforms across Linux (RHEL/Oracle Linux), Unix, and Windows Server environments.

• Work with enterprise monitoring tools such as OEM Cloud Control, Prometheus, Grafana, Splunk, ELK, and AppDynamics.

• Coordinate with infrastructure and application teams for production deployments and incident resolution.

Security & Compliance

• Ensure database environments meet enterprise security and compliance standards.

• Lead vulnerability remediation and database hardening efforts.

• Support disaster recovery and business continuity initiatives.

Required Qualifications

• 10+ years of hands-on experience as an Oracle DBA in enterprise environments.

• Strong expertise in RAC, Data Guard, RMAN, ASM, PL/SQL, and performance tuning.

• Experience supporting multi-terabyte, high-volume transactional databases.

• Hands-on experience with Oracle Enterprise Manager (OEM).

• Working knowledge of DB2 (HADR, backup/recovery).

• Exposure to MongoDB administration and monitoring.

• Strong troubleshooting, analytical, and communication skills.

• Ability to operate independently in complex production environments.

Preferred Qualifications

• Experience with Oracle Exadata.

• Exposure to Oracle Cloud Infrastructure (OCI) or Autonomous Database.

• Experience with enterprise backup tools such as Veeam, Commvault, or NetBackup.

• Knowledge of containerized environments or hybrid cloud architectures.

Technical Skills

Oracle RAC | Data Guard | RMAN | PL/SQL | ASM | GoldenGate | OEM | DB2 HADR | MongoDB | Linux | Performance Tuning | HA/DR | Security Hardening