Russell Tobin
Oracle Database Administrator
Skills
1 month ago
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Important information
Contract type:
Freelance / Contract
Location:
Singapore
Work mode:
Onsite
Published on:
25 September 2026
What they need
Role Overview
We are seeking an experienced Oracle Database Administrator (DBA) with strong hands-on expertise in Oracle 19c, Oracle RAC/rack-server environments, GoldenGate and Data Guard. The ideal candidate will have proven experience supporting database migrations from legacy hardware to new/upgraded hardware , including lift-and-shift migrations, while maintaining database availability, performance and integrity.
Key Responsibilities
- Perform Oracle database migrations from existing/legacy hardware to new or upgraded hardware , including lift-and-shift activities and end-to-end migration planning and execution.
- Support database migration projects involving RAC -server environments , including database setup, configuration, validation and cutover.
- Perform installation, configuration, upgrade and administration of Oracle Database 19c environments.
- Manage and maintain Oracle RAC and high-availability database environments.
- Design, configure and administer Oracle Data Guard for high availability and disaster recovery.
- Demonstrate strong hands-on expertise in Oracle GoldenGate , including configuration, replication management, monitoring, troubleshooting and performance optimisation.
- Perform RMAN backup and recovery activities, including backup strategy, recovery testing and database restoration.
- Conduct database health checks and performance optimisation/tuning , identifying and resolving database performance bottlenecks.
- Plan and execute migration activities including pre-migration assessment, data migration, validation, testing, cutover and post-migration support.
- Work closely with infrastructure/server teams during hardware refresh and database migration activities to ensure smooth transition to the new environment.
- Troubleshoot database, replication, performance and migration-related issues and provide timely resolution.
- Ensure database availability, integrity, security and performance throughout migration and post-migration operations.
- Prepare and maintain technical documentation, migration plans, runbooks and operational procedures.
Key Requirements
- Strong hands-on experience as an Oracle DBA , preferably in enterprise environments.
- Strong expertise in Oracle Database 19c .
- Proven experience migrating Oracle databases from old/legacy hardware to new hardware , including lift-and-shift migrations.
- Hands-on experience with RAC -server/database infrastructure and database setup on new hardware.
- Expert-level Oracle GoldenGate experience is required.
- Strong experience with Oracle Data Guard .
- Strong hands-on experience with RMAN backup and recovery.
- Proven experience in Oracle database performance tuning and optimisation .
- Experience managing production database environments and supporting critical migration/cutover activities.
- Candidates should have recent, hands-on experience with Oracle database migration and modern hardware refresh projects , rather than experience limited to traditional DBA administration.
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