Freelancer profile translated to English.
Back to original languageAbout Abdourahman
Oracle Consultant, architect, with nearly 20 years of experience, I have worked on all versions since 7.4. This includes design/architecture, deployment, migration, support and administration, as well as performance and security.
Oracle DBA, specialist in high availability and replication, I have advanced expertise in Oracle RAC, DataGuard, Goldengate, AWR, RMAN.
From production and development support to the design of complex architectures, including implementation, migrations, and data center rationalization, my experiences have also given me a broad vision and cross-functional skills that allow me to collaborate easily with different stakeholders and business units of information systems. And always with a pragmatic approach.
French
Native or bilingual
English
Native or bilingual
Arabic
Fluent
Spanish
Conversational
Remote only
Primarily works remotely
Experience
- TotalEnergies Global IT Services (TGITS)
On Malt
DBA OracleMay 2023 - July 2023 (2 months)Implementation of a new RMAN backup strategy.Restore tests on the same server, on a new server.Deployment scripts, procedures, and restore procedures.Implementation of physical standby with Broker - Dataguard.Switchover and failover tests with reconstruction of the new standby.Installation, switchover, failover, and troubleshooting procedures. - AdmiralSenior Oracle DBABANKING AND INSURANCEFebruary 2021 - Today (5 years and 4 months)Cardiff, United KingdomProject to migrate Oracle to Oracle Database@Google CloudDedicated infrastructure on GCP and Oracle Exadata - ExaDB-DProof of Concept (POC) to validate the choice of the new architecture:GCP Console, OCI Console, TDI Encryption, ZDM for migrating two databases of 5 and 30TBPerformance tests to evaluate the capabilities of the databases on Exa at Google.Conversion of production 19c Non-CDB databases to PDB in preparation for the version upgrade to 23aiImplementation of monitoring from OCI - Observability with Pager Duty.Migration of jobs from OEM to the OCI consoleValidation of new DATs and drafting of DATDs.Migration project of several environments to GCP & BMSOptimization of Oracle backups of over 50TB - less than 8 hours for a Full backup.Upgrade of the Guideware application from version 8 to version 10.Optimization of this upgrade, reducing the total duration from 23 hours to less than 6 hours.Design of the new OEM across two geographic zones: Repository protected by a remote standby and creation of a new remote OMS kept synchronized by storage-level sync. Use of CNAME for failovers.Project to migrate all production and non-production databases to OEL 8 Linux and upgrade Oracle to version 19cDatabases in standalone, RAC, and with standby - DataguardMigration method from RHEL7 to OL8 -> Storage snapshot then database rename using the NID utilityUpgrade method to 19c: using Oracle's autoupgrade tool.Implementation of a mechanism for simultaneous upgrade of primary and secondary databases.Upgrade of Grid Infrastructure layers to 19cProduction and Non-Production Support
- ArvalOracle, Exadata, Golden Gate ConsultantAUTOMOBILEAugust 2020 - December 2020 (4 months)Rueil-Malmaison, FranceOracle support for production environments - EXADATA X8, RDBMS 11g to 19cSupport and administration of Oracle Golden Gate 12c and 19c toolMigrations of non-production environmentsUpgrade of databases to version 19c in EXADATA environmentMSSQL and PostgreSQL supportUpgrade of OEM from version 13.2 to version 13.4Migration to a new OEM infrastructure (OMS, Repository, and BIP)
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Education
- SQL Server Database Administration (DBA)Udemy2020
- AZ-103 / 104: Azure Administrator Exam Certification 2020Udemy2020