The Sr. Oracle DBA & System Administrator is responsible for the design, implementation, administration and ongoing optimization of Oracle E-Business Suite R12 databases running on Oracle Exadata hardware. As a Sr. Oracle DBA & System Administrator, you will ensure availability, performance, backup/recovery and secure operations of the EBS database and related infrastructure; provide technical leadership; lead and develop automation efforts for database provisioning, patching, monitoring and deployment; and transfer knowledge to the broader team.

What You Will Do:

- Administer and support Oracle E-Business Suite R12 databases and related components on Oracle Exadata hardware
- Install, configure, patch and upgrade Oracle databases, Grid Infrastructure, ASM and related components necessary for EBS R12
- Implement and maintain end-to-end monitoring using Oracle Enterprise Manager (OEM)
- Design, document and operate robust backup and restore procedures (RMAN, Data Guard where applicable), and validate recovery procedures with regular restore tests
- Create, document and execute cloning procedures for Dev/Test/QA/DR environments (Rapid Clone, AD utilities, RMAN-based clones)
- Concurrent Manager tuning, parallel execution settings, resource allocation and scheduling
- EBS environment
- Perform performance monitoring
- Perform root cause analysis and implement preventative measures
- Create runbooks, standard operating procedures, train and mentor other DBAs and system administrators
- Participate in an on-call rotation for after-hours support as required
- Travel to data centers or other company locations for deployments, DR testing or hardware upgrades as needed
- Lead architecture and design reviews for new EBS/Exadata projects, upgrades or migrations
- Collaborate with Security and Compliance on audits (PCI, SOX)
- Evaluate new Exadata features Oracle releases and third-party tools
- Develop and maintain capacity-planning models,



cost analyses and lifecycle roadmaps for database infrastructure

What You Need to Succeed:

- Minimum 10+ years’ hands-on experience as an Oracle DBA & System Administrator supporting Oracle E-Business Suite R12.
- Proven experience with Oracle Exadata hardware (installation, configuration, tuning, patching and troubleshooting).
- Strong experience with Oracle Enterprise Manager (OEM) for monitoring and administration.
- Solid expertise with RMAN backups, recovery scenarios, disaster recovery concepts; experience with Data Guard is a plus.
- Experience designing and executing cloning procedures for EBS environments (Rapid Clone, AD utilities, RMAN, hot/cold clones).
- Experience configuring and tuning databases and application tiers for parallel concurrent processing and Concurrent Manager optimization.
- Experience implementing and supporting model routing in EBS and configuring additional application servers to support routing and workload distribution.
- Strong knowledge of ASM, Grid Infrastructure, Oracle RAC, Linux for Oracle, and storage/networking concepts as they relate to Exadata.
- Proficiency in SQL, PL/SQL and shell scripting (bash); experience with automation/orchestration tools (Ansible, Puppet, Chef, etc.) and CI/CD is a plus.
- Excellent written and verbal communication skills; experience creating technical documentation and conducting knowledge transfer.
- Oracle certifications (OCA/OCP/OCE) are preferred.
- Must be able to participate in an on-call rotation and travel to data centers or other sites as required.
- Hands-on experience with automation/orchestration tools beyond basic scripting
- Familiarity with cloud or hybrid Exadata-Cloud architectures (OCI, AWS RDS, Azure)
- Proficiency in a general-purpose scripting language (Python, Perl) for complex automation tasks
- Understanding of database security standards and best practices (encryption-at-rest, key management)
- Strong collaboration and stakeholder-management skills
- Oracle Exadata Database Machine Administrator or Oracle Cloud Infrastructure certifications (preferred)

📌 Sr. Oracle DBA and System Administrator (México)
🏢 ALLEGION MÉXICO
📍 México