Oracle database/grid infrastructure 19c, 18c, 12c and 11g setup and administration for RAC and standalone.Oracle database upgrades to and from different versions (11g-19c,12c-19c).Oracle database cross-platform migration from AIX to X86 Linux using transportable tablespace (V4 Incremental Backup).Setting up and administering Oracle RMAN backups (ZDLRA/Commvault) and recovery operations (complete/incomplete recovery, full/incremental backups).Troubleshooting Oracle database performance bottlenecks through the use of Oracle tools (OEM, AWR, ADDM, ASH reports) and operating system utilities (Alert logs).Performing various routine jobs to improve and maintain performance including compression, statistics gathering, creation of indexes, creating of partitions.Implementation of Oracle database quarterly patches to maintain n-1 policy.Implementation and execution of Oracle database consolidation using CDB concept.Review and closure of database security vulnerabilities cutting across OS and database platforms.Setup and administration of Oracle physical standby servers using data guard and administration (physical to snapshot standby and vice versa).Ensure 99.99% availability maintained for all critical databases.Oracle Exadata X5, X6, X7, X8M-2 and X9M Administration.Setup and administration of MySQL database for both production and test in small scale.Setup and administration of Microsoft SQL server databases in large scale (Version 2014, 2016, 2019).Setup and administration of Mongo Server database(Production and test in Small Scale).Microsoft SQL server database replication using ALWAYS-ON/Mirroring Features.Recovering from failed Microsoft SQL databases in HA setup environment using always-on/Mirroring features.Microsoft SQL databases upgrades to and from different versions (e.g. 2012-2016, 2014-2019).Setup and administration of PostgreSQL databases in large scale.(Replications/Switchovers).PostgreSQL database upgrades to and from different versions.

• Perform Installation of Exadata X6-2 and Troubleshooting of Exadata X3-2• Perform Installation and upgrades of database software• Monitor database systems performance and address potential issues to ensure service are available• Perform backup and recovery of data• Implement relevant updates and patches and service packs on database from time to time;• Implement procedures that will sustain database security • Any other duties as may be assigned by management

Responsibilities:• Installation, design, creation, development, enhancements and maintenance of Oracle database Servers, Application servers and Red Hat-Linux Operating system and windows platform• Knowledge & experience of configuring databases for high availability in a Disaster Recovery (DR) environment using real time replication data technologies Data Guard technologies(Active Data Guard)• User creation and granting/revoking roles to them and managing their privileges.• Table space Creation and Modification, Creation/Modification of various Tables, Indexes and other database objects.• Implemented various Database Backup Strategies like export backups, hot and cold backups.• Configure Database backups using RMAN.• Monitoring backups of database and archives.• Alert and trace file review and monitoring.• Configure and manage services in a RAC environment• Determine the best RAC and Data Guard topologies for your environment• Configure the Data Guard Broker configuration files in a RAC environment.• Manage ,configure , install and Administer Solaris OS and ZFS Storage• Basic knowledge Oracle 12c database and Oracle 12c Weblogic suite applications desirable

• Desktop Policy Implementation project for UNON, UNEP and UNHABITAT Clients-Backup up user’s profile data using Window Easy Transfer tools and create new user profile.-Restoring user’s profile data using Window Easy Transfer tools and checking if complete-Briefing the Team Leader on Desktop policy on expectations and Keeping the whole team informed of progress - copy each other on emails to client or internally.-Sending out of reminders to clients before implementation date-Following schedule as confirmed by client and Plan for desktop policy -Issue Log for desktop policy implementation and resolving issue arising after implementation.-Communicating in case of absence.• Implementation of Single Sign On and Managed Replica on lotus Emails project for 3 Months-Planning for SSO by testing the installation of all version (6, 7, 8.5.1) before upgrade.-Installation were taking place on background so my duties was to check whether migration were successful and accessible locally, if not re-installed application manually.-Preparing documentation and training other staffs how troubleshoot it.-Resolving arising post installation issues and escalading unresolved to admin to assistsOther duties are: Plan, design, analyze, and provide technical support for data communications network or group of networks. Conduct research and evaluation of network technology and recommend purchases of network equipment. Customer Technical Support (servers, printers, computer work stations), Setting up user accounts, permissions and passwords, Overseeing security of all systems, especially the internet, and installing anti-virus protection, Fixing network faults, Network maintenance, Day to day administration and monitoring of network use, Planning future improvements, suggesting IT solutions to business problems, Making sure all IT meets industry standards

• Developing Clients Website: Tools used PHP, JavaScript, Ajax, CSS, JQuery, HTML, MYSQL and Web Editors and Apache Servers, Java and C# as OOP tools• Installing and configuring MS Windows XP, Vista, 7, Linux and Installing MYSQL, Apache• Client Software / ICT Support i.e. Build and maintain relationships with clients.• Any other duties assigned by the Management of the Company

Responsibilities:• Manage the IT team of 10 Data Processing Clerk and 2 IT Technical staff taking responsibility for the desktop and application support.• Ensure systems, processes and methodologies as specified are followed to sure effective monitoring, control and support of service delivery.• Build and maintain relationships with clients.• Mentoring, training and inducting of new IT support staff• Provide hardware and software support for DELL, HP and COMPAQ computers• Provide daily IT support for over 20 users on the Blue Shield Insurance Data Processing Center LAN. • Installing and configuring Windows XP, Microsoft Windows 7

Responsibilities:• Provide hardware and software support for DELL, HP and COMPAQ desktops and laptops.• Provide software support for Microsoft Windows 7, Windows XP/2000 and MS applications.• Provide daily support for over 200 users on the KNBS network e.g. install Ant virus, Printers.5. Join a team of 5 system engineers to Installation of New Systems (HP Desktops, Networking them, and setting them to domain directory) at Nyayo House for Census Data Processing Period • Ensure that all network services and equipment is up at all times, Upgrading network equipment with minimum downtime. Design and install LANs at various Offices in Herufi and Nyayo.• Participate in Data Processing in Scanning, OCR and Key from Image