Job Description

Project Scope:

This project will encompass planning for the upgrade of the Oracle E-Business System (EBS) from version 12.1 to version 12.2 for the City's customer information and water billing system. The water billing system uses the basis2 application, which is built on an Oracle EBS foundation. This effort will include developing a comprehensive project plan to upgrade the EBS software along with defining and planning any associated changes to the basis2 application.

The Office of Innovation and Technology and Department of Revenue IT unit are seeking an experienced Oracle E-Business Suite (EBS) DBA to lead the planning of an upgrade from Oracle EBS 12.1 to 12.2. The ideal candidate will have deep expertise in Oracle Database Administration, EBS architecture, and upgrade methodologies. This role involves analyzing the existing environment, the ability to clone the system with standard EBS tool and designing an upgrade strategy that will ensure post-upgrade stability and performance optimization.

Roles/Responsibilities:

• Develop a comprehensive upgrade plan for Oracle EBS from 12.1 to the latest subversion of 12.2, including risk assessment and rollback strategies.
• Perform technical analysis, impact assessment, and design pre-upgrade validation to ensure a smooth transition.
• Determine impact to basis2 customer information/water billing system and factor into upgrade plan.
• Plan installation and configuration of Oracle EBS 12.2, including WebLogic, Fusion Middleware, and Online Patching (ADOP).
• Define optimization of the Oracle Database (if required) in alignment with EBS 12.2 compatibility.
• In collaboration with the Basis2 custom module's vendor, define code customizations and retrofitting as needed to ensure compatibility with 12.2.
• Design cloning, backup, and recovery processes to safeguard data during the upgrade.
• Create plan for troubleshooting and resolving performance, patching, and configuration issues post-upgrade.
• Work closely with functional consultants, developers, and business users to develop a comprehensive plan that ensures minimal disruption to business operations. The plan to include detailed technical choices (source constraints, target Database, target Operating System) and a feasibility assessment thereof.
• Conduct training and documentation for internal teams on new features and best practices.

Work activities and Essential Functions:

1. Pre-Upgrade Planning & Assessment

1. Conduct a system assessment to analyze the existing EBS 12.1 architecture, including database, application tier, and customizations.
2. Evaluate system compatibility with EBS 12.2, including database versions, third-party software (including basis2 water billing system), and hardware.
3. Perform a custom code impact analysis of basis2.
4. Identify deprecated features, unsupported objects, and necessary modifications.
5. Develop an upgrade strategy, including timelines, rollback plans, and resource requirements.

2. Environment Preparation & Cloning

1. Define test environments (development, test, and UAT) required for the upgrade process.
2. Create plan for cloning of the production EBS 12.1 environment to create a sandbox for dry runs.
3. Create plan for upgrading the database to a certified version (e.g., Oracle Database 19c) as per EBS 12.2 requirements.
4. Define required patches to prepare for the upgrade.
5. Define a test plan to prepare for the upgrade.

3. Plan the components of executing the Upgrade Process

1. Follow Oracle's 12.2 upgrade roadmap, including:
2. Running Rapid Install for 12.2
3. Applying Release Update Pack (RUP) patches
4. Enabling Online Patching (ADOP framework)
5. Execute data migration scripts and update metadata as required.
6. Verify integrity of concurrent manager processes, workflow mailers, and business-critical integrations.
7. Work with developers to define how to retrofit and remediate customizations impacted by the new architecture.

4. Plan Post-Upgrade Validation & Optimization to include but not limited to:

1. Conduct thorough functional and performance testing to ensure system stability.
2. Optimize database and application performance, including SQL tuning, indexing, and JVM tuning.
3. Validate patching functionality using Oracle's AD Online Patching (ADOP) feature.
4. Perform cutover planning and execution for the final upgrade to production.
5. Provide end-user support, documentation, and knowledge transfer to stakeholders.

Mandatory Skills:

1. 7+ years of hands-on experience as an Oracle EBS DBA with expertise in versions 12.1 and 12.2 on the WINDOWS Server Operating System
2. Strong knowledge of Oracle Database (11g, 12c, 19c), including RMAN, Data Guard, and performance tuning.
3. Experience with Oracle EBS 12.2 upgrade processes, including ADOP (Online Patching), WebLogic, and Fusion Middleware.
4. Proficiency in cloning, backup/recovery, patching, and migration of EBS environments.
5. Strong knowledge of Windows environments, scripting, and automation.
6. Hands-on experience with Oracle Applications DBA (AD utilities, AutoConfig, ADOP, rapid clone, etc.).
7. Experience in customization impact assessment, and code remediation.
8. Understanding of Oracle Security, Concurrent Processing, and Application Tier Architecture.

Desirable Skills:

1. Experience with Oracle performance monitoring, tuning, and optimization
2. Ability to provide technical guidance to business and executive audiences in clear, concise, understandable, and actionable terms
3. Ability to lead and execute complex upgrade projects with minimal supervision.
4. Strong problem-solving and troubleshooting skills.
5. Excellent communication skills to collaborate with cross-functional teams.
6. Ability to work in high-pressure, dynamic environments with tight deadlines.
7. Certification in Oracle DBA or EBS is a plus.

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