Oracle Exadata Senior Administrator

Job Description:

Role Summary

We are seeking a Senior Exadata Administrator with deep expertise across Oracle Exadata on-premises (X8M/X9M/X10M) and Exadata Cloud Service (ExaCS/ExaCC) on OCI. This role is responsible for the end-to-end lifecycle of Exadata environments from deployment, patching, and performance engineering to high availability, disaster recovery, and capacity management ensuring mission-critical Oracle database workloads run at peak performance and resilience.

Key Responsibilities

Exadata On-Premises Administration

- Deploy, configure, and manage Exadata Database Machine racks (X8M, X9M, X10M) including compute nodes, storage servers, InfiniBand/RoCE networking, and ILOM.
- Perform quarterly and ad-hoc patching using dbaascli, exadcli, PatchMgr, and opatchauto across grid infrastructure, database homes, and storage cells.
- Manage Exadata storage (cell disks, grid disks, flash cache, PMEM) including cell-level administration using CellCLI and ExaCLI.
- Configure and tune Smart Scan, Storage Indexes, Hybrid Columnar Compression (HCC), and Smart Flash Cache for optimal offload performance.
- Manage ASM disk groups, rebalancing operations, and storage allocation across database workloads.
- Perform firmware and component upgrades for ILOM, switches, PDUs, and InfiniBand/RoCE switches.

Exadata Cloud Service (ExaCS / ExaCC on OCI)

- Provision and manage Exadata Cloud Infrastructure, VM Clusters, and database homes via OCI Console, CLI, Terraform, and REST APIs.
- Administer Exadata Cloud@Customer (ExaCC) deployments including infrastructure maintenance scheduling and VM cluster lifecycle.
- Manage OCI IAM policies, compartment structures, and network configurations (VCNs, subnets, NSGs) specific to ExaCS/ExaCC.
- Perform scaling operations (OCPU, storage, node additions) and manage elastic configurations.
- Automate provisioning and lifecycle operations using Terraform OCI provider and OCI Resource Manager stacks.

High Availability & Disaster Recovery

- Configure and manage Oracle RAC and RAC One Node across Exadata environments.
- Implement and maintain Oracle Data Guard (Active Data Guard) for HA/DR across on-premises and cloud.
- Design and test switchover/failover procedures, including cross-platform DR (on-prem ↔ ExaCS).
- Manage RMAN backup strategies including backup to OCI Object Storage, Zero Data Loss Recovery Appliance (ZDLRA), and local FRA.
- Implement and monitor Oracle Maximum Availability Architecture (MAA) best practices.

Performance Engineering & Tuning

- Monitor and optimize Exadata-specific performance using AWR, ASH, ADDM, cell metrics, and Exadata Storage Server software utilities.
- Tune Smart Scan offload ratios, I/O Resource Management (IORM), and database resource plans.
- Analyse cell server statistics, flash cache hit rates, and storage index efficiency using ExaWatcher and OSWatcher.
- Conduct capacity planning and workload characterization to inform scaling and consolidation decisions.
- Leverage OCI Operations Insights and Database Management for cloud-hosted Exadata performance monitoring.

Security & Compliance

- Implement Exadata security hardening following Oracle Maximum Security Architecture guidelines.
- Configure Transparent Data Encryption (TDE), Oracle Key Vault integration, and network encryption.
- Manage Oracle Database Vault, Audit Vault, and Data Masking for compliance-driven environments.
- Apply CIS benchmarks and security patches in alignment with organizational change management processes.

General

- Develop and maintain operational runbooks, architecture documentation, and DR test plans.
- Collaborate with solution architects, DBA teams, and client stakeholders on capacity planning and platform roadmaps.
- Provide technical leadership and mentoring to junior administrators.
- Participate in on-call rotations, incident management, root cause analysis, and problem management.

Required Skills & Experience

- 7–8 years of progressive experience in Oracle Database and infrastructure administration with a minimum of 4 years focused on Exadata platforms.
- Strong hands-on expertise with Exadata on-premises (X-series) including CellCLI, ExaCLI, dbaascli, ILOM, and InfiniBand/RoCE networking.
- Proven experience with Exadata Cloud Service (ExaCS) or Exadata Cloud@Customer (ExaCC) on OCI.
- Deep knowledge of Oracle RAC, ASM, Data Guard, and RMAN in Exadata contexts.
- Strong understanding of Exadata Smart software features: Smart Scan, Storage Indexes, HCC, Smart Flash Cache, PMEM.
- Proficiency in Exadata patching lifecycle and tooling (opatchauto, PatchMgr, dbaascli).
- Experience with Oracle Database versions 19c and 23ai on Exadata.
- Working knowledge of Linux administration (Oracle Linux / RHEL), shell scripting, and Python for automation.
- Strong understanding of networking concepts relevant to Exadata (InfiniBand, RoCE, client/backup networks, VLANs).
- Excellent communication skills with the ability to produce clear operational documentation and present to technical and client stakeholders.

Preferred Skills

- Oracle certifications: Oracle Exadata Database Machine Administrator Certified Professional, Oracle Database Administration Certified Professional, OCI Architect Associate/Professional.
- Experience with Oracle Enterprise Manager (OEM) 13c Cloud Control for Exadata monitoring and management.
- Familiarity with Terraform (OCI provider) for automating ExaCS/ExaCC provisioning.
- Experience with Oracle GoldenGate for real-time replication on Exadata.
- Knowledge of Oracle Autonomous Database on Dedicated Exadata Infrastructure.
- Experience with Oracle Zero Data Loss Recovery Appliance (ZDLRA).
- Familiarity with OCI Operations Insights, Database Management, and Performance Hub.
- Experience with database consolidation and multi-tenant (CDB/PDB) architectures on Exadata.
- ITIL Foundation or equivalent service management awareness.
- Experience working in managed services or consulting delivery environments.

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