Database Administrator with *+ years of experience on oracle RAC, GOLDENGATE, DATA GUARD, and EDBPostgres Maintenance, replication and migration. Skilled at migrating oracle databases to PostgreSQL on premise and to AWS cloud with tools like MTK, SCT and DMS. Also have extensive knowledge on performance tuning tools likes AWR, ASH, ADDM, PG_STAT_ACTIVITIES, pgBadger and extended event to troubleshoot performance issues and ensure that the system works at its optimal. Highly detailed oriented, with a drive to continually expand and obtain knowledge to better service Databases and assist in solving problems. Looking to apply skills learned through experience in assisting companies to archive their goals and objectives.
Areas of expertise include:
Project & Production Support
Oracle 12c, 11g, & 10g Versions
Installation & Configuration
Upgrades & Patches
Migration of Systems
Backup & Recovery
Dataguard & Broker
Optimization of SQL & PL/SQL Scripts
OEM Database & Grid Control
Oracle 10g, 11g and 12c, PostgreSQL 9.6, 10, 11
Platforms: Windows Server, Linux (red hat, centos),
Languages: SQL, PL/SQL PL/PgSQL, Bash
Tools: OEM Grid Control, AWR, ADDM, ASH, PgHero, PgAdmin 4, PEM, PgTune, PgBouncer, PgBadger, Remedy,
Caterpillar - Peoria, IL
November 2017 – 2020
Database Administrator responsible for managing all aspects of oracle and PostgreSQL (Cloud and on – premise) databases.
Oversaw 24/7 on-call support for databases using Oracle 12c Cloud Control for alert monitoring and notification.
Upgraded databases from 10g to 12C
Monitor and troubleshoot RAC databases to maintain availability of production databases
Migrated systems to Multitenant Architecture using CDB and PDB applications
Extensively investigated and followed-up with application teams, and proposed solutions to resolve slowness and performance issues
During production hours, resolved lock and resource contention issues
Provided tuning recommendations to application teams through troubleshooting systems using SQL baselines, SQL profiles, and SQL Tuning Advisor
Identified root causes of SQL performance issues by analyzing EXPLAIN PLAN, SQL-TRACE, and TKPROF trace files
Aided troubleshooting of performance issues through analysis of AWR, ASH, and ADDM reports
Cloned and migrated small databases using import/export utilities, and used Datapump import/export for 11g/12c databases
Applied patches, upgrades, and maintenance on all databases
Utilized production data to refresh development and test instances regularly.
Provided technical assistance for installation and upgrading of existing Oracle databases.
Data Pump, EM Grid Control, and various other daily, and enhanced features in 12c such as table and partition recovery
Implemented Oracle TDE to provide transparent encryption of stored data
Used Oracle Enterprise Manager to perform database monitoring, maintenance, and performance tuning
Installed/Configured PostgreSQL Version 9.6, 10 and 11 and monitored and managed them using PgAdmin and PSQL
Performed backup using pgBackrest, pg_dump and pg_Basebackup
Created and managed database objects such as users, roles, indexes, views, sequences and permissions.
Migrated oracle databases to AWS RDS PostgreSQL using SCT Data Migration Service (DMS) Tool.
Migrated from oracle to PostgreSQL on-premise using mtk
Performed database Patching as well as version upgrade using Logical replication and Pg_upgrade from 9 to 11
Configured and managed Streaming Replication between master and multiple slaves for high availability
Used customized scripts to monitor table growth and automated backups using cronjobs
Used PgHero for performance tuning. Tuned SQL using Explain Analyze and PG_STAT_ACTIVITY
Performed maintenance activities like vacuum, vacuum full and analyze.
Tuned Postgre Instances using Pgtune and Pgconfigurator
Configured pgBouncer for connection pooling
Use pg_tune for performance tuning
United Airlines - Chicago, IL
August 2014 – November 2017
Implemented procedures for automation of database management through tables and indexes.
Executed processes for evaluation of system space, database allocation and storage metrics.
Maintained all existing databases and new installations at current and stable production levels
Installed 11gR2 RAC while performing disk group management in ASM
Monitored health checks of OCR and VOTING DISKS while troubleshooting issues in RAC environment
Ensured the secure and efficient operation of Oracle Database Systems
Performed daily tasks such as resolving tickets, development support, and collaboration with application tuning
Created and implemented recovery strategies, and successfully recovered databases using RMAN
Utilized RMAN utility to schedule and monitor physical backups in the CRON tab
Created users, groups, roles, profiles, and granted privileges according to job needs
Optimized and tuned SQL queries using SQL-TRACE, TKPROF, and EXPLAIN PLAN utilities
Applied security patches such as Patch set, Critical Patch Updates, and Patch Set Updates
Used Transportable Tablespace (TTS) to quickly move a user’s tablespace across Oracle databases
Implemented data refreshes using RMAN, Datapump, and conventional export/import for Oracle 11g and 10g
Installed and configured Oracle 126.96.36.199 database on LINUX and WINDOWS platform
Upgraded databases from 11g to non-CDB 12c
Successfully used materialized views and Oracle Streams in Oracle 10gR2 to perform data replication
Implemented Tablespace level TDE security and created Oracle wallets
Constantly monitored the performance of databases through viewing alert log and trace files
Managed space, capacity planning, disaster recovery, and overall maintained the databases
Sql server experience
schedule database and transactional log backup using the database maintenance plan wizard
on performance tuning I have use extended event to tune the performance of sql queries and store procedures and index tuning wizard
done maintenance using the maintenance wizard
schedule jobs and alert using sql server AGENT
install sql server 2012,2014, on windows.
hands on import and export of databases
backup and recovery of database base on recovery models
extensive knowledge of the alwayson high availability on sql server
EDUCATION & CERTIFICATION
BSc in English common law
University of Yaounde II