Oracle Senior Database Administrator

Job Description:

Role Summary

We are seeking a Senior Oracle Database Administrator with deep expertise across on-premises and OCI-hosted database environments supporting mission-critical Oracle application stacks. This role spans the full DBA lifecycle installation, patching, performance engineering, high availability, disaster recovery, security hardening, and automation with hands-on accountability for databases underpinning Oracle E-Business Suite, Siebel CRM, Billing & Revenue Management (BRM), and Fusion Cloud applications.

Key Responsibilities

On-Premises Database Administration

* Install, configure, and manage Oracle Database (19c, 21c, 23ai) on Linux (OL/RHEL) and Solaris/AIX environments.
* Administer Oracle RAC and RAC One Node clusters including clusterware, voting disks, OCR, and SCAN listeners.
* Manage ASM disk groups, rebalancing, failure groups, and storage allocation across database workloads.
* Plan and execute database patching (RU/RUR, one-off patches) using OPatch and opatchauto with minimal downtime windows.
* Administer Oracle Grid Infrastructure, TNS networking, listener configurations, and database link management.
* Manage Oracle Multitenant architecture (CDB/PDB) including provisioning, cloning, plugging/unplugging, and resource management.

OCI Database Services Administration

* Provision and manage OCI DB Systems (VM/BM), Exadata Cloud Service (ExaCS), and Exadata Cloud@Customer (ExaCC).
* Administer Oracle Autonomous Database (ATP/ADW) including scaling, cloning, refreshable clones, and workload management.
* Manage OCI Database tooling: Database Management, Operations Insights, Performance Hub, and Management Agent.
* Automate database provisioning and lifecycle operations using Terraform (OCI provider) and OCI CLI.
* Configure and manage OCI networking for database tier: private subnets, NSGs, service gateways, and private endpoints.
* Manage database backups to OCI Object Storage and configure automatic backup policies.

Oracle Application Database Support

* Administer databases underpinning Oracle E-Business Suite (EBS) including EBS-specific schemas, concurrent managers, AD utilities, and database-tier patching aligned with EBS release cycles.
* Manage databases for Siebel CRM Siebel schema optimization, table space management, index maintenance, and Siebel-specific parameter tuning.
* Support Oracle BRM (Billing & Revenue Management) databases pipeline-intensive workload tuning, BRM schema management, partition strategies for CDR/event data, and purge/archive automation.
* Administer databases for Oracle Fusion Cloud integrations managing landing/staging databases, OIC connectivity, and hybrid database links between on-prem and Fusion SaaS.
* Coordinate with application teams on release deployments, schema changes, data migrations, and application-driven database changes.

High Availability & Disaster Recovery

* Implement and maintain Oracle Data Guard (Physical/Logical Standby, Active Data Guard) for on-prem and OCI.
* Design and execute switchover/failover runbooks including cross-platform DR scenarios (on-prem ↔ OCI).
* Manage RMAN backup and recovery strategies including backup to disk, tape (OSB), OCI Object Storage, and ZDLRA.
* Configure and maintain Oracle Flashback technologies (Flashback Database, Flashback Table, Restore Points).
* Implement Oracle GoldenGate for real-time replication, zero-downtime migration, and active-active configurations.

Performance Engineering & Tuning

* Perform proactive performance analysis using AWR, ASH, ADDM, SQL Tuning Advisor, and SQL Plan Management.
* Tune SQL workloads, execution plans, and optimizer statistics for application-specific patterns (EBS, Siebel, BRM).
* Configure and optimise Resource Manager plans for multi-workload consolidation and PDB-level resource isolation.
* Monitor and tune I/O, memory (SGA/PGA), and concurrency across RAC instances.
* Conduct capacity planning and trending analysis to inform scaling and consolidation decisions.

Security & Compliance

* Implement Transparent Data Encryption (TDE), Oracle Key Vault, and network encryption (SQL*Net encryption).
* Configure Oracle Database Vault, Privilege Analysis, and Unified Auditing for compliance-driven environments.
* Apply CIS Oracle Database benchmarks and security patching aligned with change management processes.
* Manage database user security, role-based access, profiles, and password policies across environments.

Automation & Tooling

* Develop and maintain automation scripts using Bash, Python, and PL/SQL for routine DBA tasks (health checks, space management, patching, provisioning).
* Administer Oracle Enterprise Manager (OEM) 13c Cloud Control targets, monitoring templates, metric thresholds, jobs, and compliance standards.
* Build self-service database provisioning workflows using OEM, Terraform, and Ansible.
* Implement database CI/CD practices schema version control (Liquibase/Flyway), automated deployments, and test environment refresh automation.

General

* Develop and maintain operational runbooks, DR test plans, and architecture documentation.
* Participate in on-call rotations, incident management, root cause analysis, and problem management.
* Collaborate with solution architects, application teams, and client stakeholders on platform decisions.
* Mentor junior DBAs and contribute to knowledge sharing within the practice.

Required Skills & Experience

* 8–10 years of progressive experience in Oracle Database Administration with hands-on expertise across on-premises and OCI-hosted environments.
* Expert-level knowledge of Oracle RAC, ASM, Data Guard, RMAN, and Grid Infrastructure.
* Strong experience with Oracle Multitenant architecture (CDB/PDB) and database consolidation.
* Proven experience administering databases for at least two of: Oracle EBS, Siebel CRM, Oracle BRM, or Fusion Cloud.
* Hands-on experience with OCI Database Services (DB Systems, ExaCS, Autonomous Database).
* Strong proficiency in database performance tuning using AWR, ASH, ADDM, and SQL Tuning Advisor.
* Experience with Oracle GoldenGate for replication and migration scenarios.
* Proficiency in Bash and Python scripting for DBA automation.
* Working knowledge of Oracle Enterprise Manager (OEM) 13c Cloud Control administration.
* Strong understanding of Linux system administration (Oracle Linux / RHEL).
* Excellent communication skills with the ability to produce clear operational documentation and engage with application and client stakeholders.

Preferred Skills

* Oracle certifications: Oracle Database Administration Certified Professional (19c/23ai), Oracle RAC Certified Expert, Oracle Cloud Database Services Certified Professional.
* OCI certifications: OCI Architect Associate, OCI Database Professional.
* Experience with Oracle ZDLRA (Zero Data Loss Recovery Appliance).
* Familiarity with Terraform (OCI provider) for database infrastructure automation.
* Experience with database CI/CD tooling (Liquibase, Flyway) and GitOps workflows.
* Knowledge of Oracle Maximum Availability Architecture (MAA) best practices.
* Experience with Oracle Database 23ai new features (AI Vector Search, JSON Relational Duality, True Cache).
* Familiarity with Oracle Integration Cloud (OIC) and hybrid integration patterns.
* Experience with Oracle Data Masking and Subsetting for non-production environments.
* ITIL Foundation or equivalent service management awareness.
* Experience working in managed services, telecom, or consulting delivery environments.

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