Y. Charles Assa
Oracle Apps DBA/OCI Architect @ Alithya
About
I am a bilingual (English/French) Oracle Cloud Infrastructure (OCI) Architect & Administrator with strong experience designing, securing, and operating enterprise workloads in the cloud. I specialize in building secure, resilient, and scalable OCI environments, with hands-on expertise across compute, networking (VCN, DRG, VPN), storage, and IAM. I have extensive experience supporting and modernizing Oracle E-Business Suite (EBS) on OCI. My approach combines architecture, automation, and operational excellence: Infrastructure as Code using Terraform for consistent and repeatable deployments Secure network design with segmentation (VCN, NSG, DRG) and Zero Trust principles Identity and access governance with fine-grained IAM policies High availability and disaster recovery using Data Guard, GoldenGate, and Block Volume Replication I also focus on operational reliability and security hardening, including: Cloud Guard customization and threat detection Database security improvements using DBSAT OS lifecycle management with OS Management Hub Key achievements: Implemented EBS Cloud Manager to accelerate provisioning and cloning Designed and documented DR architectures aligned with RTO/RPO objectives Strengthened database and infrastructure security posture across OCI environments I am passionate about helping organizations modernize Oracle workloads and operate securely in the cloud.
Canada
Greater Toronto Area
Information Technology & Services
Backup & Recovery Systems, OAS, oracle database security, Kerberos, database vault, Cloud Computing, Database Administration, Databases, Oracle Database, Oracle Database Administration, Data Administration, Oracle Applications, Oracle E-Business Suite, Oracle Enterprise Manager, Database backup and recovery, RMAN, Project Management, Integration, Performance Tuning, SQL
Experience

Oracle Apps DBA/OCI Architect
Toronto, ON
Cloned, patched, and administered Oracle E-Business Suite (DEV/TEST/PROD) on OCI, verified post-patch health, and maintained uptime over 98%. Designed and deployed a custom DR architecture on OCI using Block Volume Replication and Terraform; documented and tested failover to meet RTO/RPO targets. Deployed and tuned Oracle Data Guard (Broker) for on-prem and hybrid topologies; monitored lag and optimized transport to keep replicas synchronized. Provisioned EBS Cloud Manager with Terraform, standardized provisioning/cloning, and reduced environment delivery time by 80%. Implemented OS Management Hub life-cycle policies and patched Linux and Windows fleets on schedule. Administered Oracle Integration Cloud (OIC) DEV/PROD instances to support integration deployments, monitored runs, and resolved failures.

Cloud Infrastructure Architect
Toronto, Ontario, Canada
• Deployed complete Iaas environment including Paas and Saas. • Deployed Weblogic Operator for Kubernetes on Azure and OCI • Configured IPSec VPN on OCI to interconnect OCI with on primes network • Deployed Apache Kafka on Kubernetes Custer • Completed Database architecture and security Assessment analysis and recommendations

Middleware Administrator
Montreal
@Desjardins --------------- Designed and deployed Middleware Solutions, - Designed and delivered a solution to strengthen an Oracle Business Intelligence environment by deploying an Oracle Data Integrator in Clustered Agents with a Standalone agent for external scheduler for Financial Industrie environment. - Deployed FIServ/Compass on top of Oracle Forms/Reports 12c applications in a multi-clustered environments prof of concept, development and production - Configured IBM MQ series cluster environments. - Configured Gemfire cache cluster environment.

Senior Oracle Database Administrator
Montreal, Canada Area
In this role, I consistently led the completion of all phases of installation, configuration, and deployment projects. I also delivered key troubleshooting and support as an active member of a 24/7 Availability Support Team focusing on WebLogic and WebSphere applications. My accomplishments include: ● Directly leading a project involving the installation and configuration of clustered WebSphere 8.5 application servers.

Oracle Fusion middleware administrator
Montreal, Canada Area
During my time in this role, I supported the timely completion of scheduled and unscheduled maintenance tasks while monitoring alerts to create rapid responses to any issues. This role also included multiple installation and configuration projects and multiple upgrade and installation endeavors. Some of my accomplishments include: ● Spearheading the completion of an upgrade of a high availability Oracle application server upgrade from 9ias to 10gR2 Aix 5.3/Linux 3. ● Upgrading a high availability Oracle application server to Fusion Middleware 11gR1 AiX 6.1/Linux 5. This server also featured identity management which used 10gR2. ● Completing the upgrade to Oracle Access Manager 11gr2 which directly resulted in major enhancements within an Oracle SSO 10gr2 environment.

Senior Oracle Database Administrator
Montreal, Canada Area
As an Oracle Database Administrator, my daily duties included the support and administration of Oracle databases. This included completing data backups, re-indexing, rebuilds, archival, and reorganizations. I also actively participated during new release developments, deployment, and testing operations. Through the delivery of comprehensive troubleshooting and support as part of a 24/7 DBA team rotation, I minimized any interruptions in staff progress. Accomplishments include: ● Controlling the planning and completion of the consolidation of five regional databases into one physical server within an IBM data centre.

Senior Oracle Database Administrator
Montreal, Canada Area
Throughout my tenure in this position, I regularly utilized my Oracle expertise and experience as I completed installation and configuration projects involving Oracle database 11g and 12c. An example of my accomplishments includes: ● Identifying a major compatibility error which occurred following an Oracle database 11g upgrade to a 12c SAP environment. This included identifying the root cause of the issue and creating highly effective workaround strategies. ● Acquiring key information from WebLogic JVM Garbage Collection during the resolution of a workload issue

Oracle Database Administrator
Montreal, Canada Area
Automated deployment procedures and platform templates to increase the maintenance and operational efficiency. Conducted 9i Rac Database failure mode analysis, developed and tested recovery procedures, and invoke failover and Data Recovery plans when required. Troubleshooted 9i Rac database platform problems, and drove short and long term corrective actions, and platform improvement plans. Developed and test deployment architectures, with varying scale, and document them for consistent use and efficient configuration management.

Database Administrator
PROC DATA Inc.
Montreal, Canada Area

Database analyste
MSCO
Cote D’Ivoire (Ivory Coast)
- Migrated IBM Mainframe data from Mvs – DL1 to Informix database on IBM risc 6000/Unix. - Written Cobol programs against DL1 database to extract data to be loaded to Informix database

Software engineering
Cote D’Ivoire (Ivory Coast)
- Migrated general ledger, cost accounting and procurement applications from IBM Mvs environment to AT&T SVR4 on oracle environment (forms3, ReportWriter2, Rdbms 7.4) - Migrated driving licence, transportation authorisation applications from IBM Mvs environment to AT&T SVR4 on oracle environment (forms3, ReportWriter2, Rdbms 7.4) - Consolidated and loaded data extracted from MVS environment into oracle database - Lead a software development team - Build data and process modelling with AMC Designer and Oracle Case - Developed oracle applications in a client-server environment. - Administered oracle database 7.4
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