Senior Oracle DBA: High Availability & Migrations

UNIZEN TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

UNIZEN TECHNOLOGIES PTE. LTD. is seeking an experienced Oracle Database Administrator to maintain high availability, perform health checks and manage migrations and patches across PROD/DR/DEV/QA/UAT environments.

You will ensure security, capacity planning and policy documentation, delivering reliable database services and rapid issue resolution while collaborating with users and vendors to meet service levels.

Qualifications

• Minimum 5 years of Oracle Database Administration experience across PROD/DR/DEV/QA/UAT.
• Strong expertise in Oracle versions 11g/12c/18c/19c.
• Experience with Oracle RAC 2/3/4 node clusters and data replication tools.
• Proficient in troubleshooting, performance issues, and security hardening.
• Proficient in Windows and Unix environments, and in generating DBA reports (AWR/ASH/ADDM).

Responsibilities

• Maintain high availability and reliability of Oracle databases.
• Perform daily health checks, maintenance, and security self-assessments.
• Create/configure/migrate databases; apply patches and upgrades.
• Perform capacity planning and monitoring of performance.
• Document policies, architecture, and design artefacts.
• Provide technical expertise for database-related projects.

Skills

Oracle DBA

High availability

Performance tuning

RMAN backups

Oracle RAC

Data Guard

Troubleshooting

Unix/Windows

Security policy compliance

Documentation

Root cause analysis

English communication

Tools

Oracle GoldenGate

Oracle Data Guard

RMAN (tool)

Job description

UNIZEN TECHNOLOGIES PTE. LTD. is seeking an experienced Oracle Database Administrator to maintain high availability, perform health checks and manage migrations and patches across PROD/DR/DEV/QA/UAT environments.

You will ensure security, capacity planning and policy documentation, delivering reliable database services and rapid issue resolution while collaborating with users and vendors to meet service levels.