1. Raghuvir Singh Chauhan
Oracle Database Administrator- Mahindra Comviva Technologies Limited (2012- Present)
Gurgaon, Haryana
Summary
10 Years of total IT experience and 3.6 years as an Oracle database administrator. Excellent
experience in production support, installation, configuring and maintaining Oracle 10g, 11g, 11g
RAC/ADG on different platforms Red Hat Linux and Windows environment and Oracle 11g OS
cluster in RHEL.
Proficient in database administration, production support, installation, configuration, upgrades,
patches, performance tuning, backup and recovery, cloning, space management, database
security, auditing, troubleshooting, Unix shell scripting and documentation. Played an active role
while the auditors auditing the setup in the sites Rwanda, Seychelles, Niger and Nigeria.
 Expertise in installing, configuring and maintaining Standalone as well as RAC databases on
various platforms and responsible for 24x7 availability of the database
 Excellent troubleshooting skills in OS level, database level using ASH, ADDM and AWR
 Expertise in RDBMS tools like SQL Loader, Import/Export, Data Pump, RMAN and OEM
grid control
 Performed backups and tested crash recoveries using conventional hot & cold backups and
RMAN, cloning databases using RMAN and VERITAS Net backup
 Skilled in developing RMAN scripts for database back up including hot and cold backup
options for both RAC and stand alone instances
 Planned and Implemented various High Availability HA & DR oracle solutions using RAC,
ASM and Data Guard
 Installed and configured Oracle 11g RAC two node cluster with Oracle 11g release 2 on
Linux platform with one node Oracle 11g ADG
 Good experience data pumps and table space management.
 A Self-starter with a positive attitude, willingness to learn new concepts and acceptance of
challenges
 Having experience in migrating database from 10g to 11g
 Database backup concepts and options such as user-managed backup, RMAN-managed
backup with or without catalog, operating system backup, cold and hot backup, full backup,
incremental and cumulative backup
 Management of schemas, objects & partitioning the tables & indexes
 Experience in Database Security and Auditing

2.  Utilized Oracle Enterprise Manager (OEM), Grid control to manage users, privileges,
profiles, and schemas
 Changed the public, private, vip and scan ip’s in Oracle11g Database on Real Application
Cluster (RAC) environment
 Changed the listener and scan listener port in Oracle11g Database on Real Application
Cluster (RAC) environment
 Restored RMAN backup of oracle RAC Database into single instance of another node
Work Experience (Airtel Africa Project)
Oracle Database Administrator
AIRTEL HA-ZAP- DRC/GABON/BURKINA FASO, Africa (Successfully completed onsite
project)
July 2015 to Nov 2015
AIRTEL HA-ZAP- Zambia, Africa (Successfully completed onsite project)
November 2014 to March 2015
AIRTEL HA-ZAP- Dara Es Salaam, Tanzania, Africa (Successfully completed onsite project)
August 2013 to April 2014
AIRTEL HA-ZAP- Accra, Ghana, Africa (Successfully completed onsite project)
May 2013 to August 2013
 Installation and Configuration of Oracle 11g in 2-Node Oracle RAC setup along with Single
Node Standby server using Active Data Guard
 Experience as a production DBA, maintaining and troubleshooting large databases, during
the off hours and over the weekends and maintaining multiple instances in a 24/7 Production
supports
 Performed all the preliminary test cases after the oracle 11g installation in 2-Node Oracle
RAC setup and in Single Node standby setup
 Setup and maintained oracle disaster recovery site using Active Data Guard
 New database server build and migration of data from the old or existing database servers to
new build database servers
 Performed user and security administration activities, such as enrolling users, granting and
revoking privileges to system users and non-system users for maintaining system security
and as per client requirement
 Trouble shooting using Oracle Alert and trace files
 Troubleshooting performance problems in Oracle RAC Database
 Data transferring with export/import utilities and Data Pump (expdp/impdp)

3.  Written nightly scripts and scheduled using CRONTAB for full export using expdp, RMAN,
backing up the archive logs every 20min, analyzing the schema and for rebuilding the
indexes of a schema
 Changed the public, private, VIP and scan IP’s in Oracle11g Database on Real Application
Cluster (RAC) environment
 Changed the listener and scan listener port in Oracle11g Database on Real Application
Cluster (RAC) environment
 Restored RMAN backup of oracle RAC Database into single instance of another node
Linux System Administrator-Appnetix Techno. Pvt. Ltd. (Franconnect Inc.) (2007-2012)
Noida, Uttar Pradesh
 Installation, Configuration & troubleshooting of operating systems (Windows and Linux)
 Manage bunch of Services – DHCP, DNS, Disk Quota, Crontab, Yum Server, Apache,
tomcat
 Responsible for Maintain scan Antivirus Corporate Edition for prevent Antivirus/Spyware to
users, Computer and Server’s
 Responsible for Administration & Troubleshooting of Qmail mail Server / Evolution,
Monitoring mail traffic, user creation, deletion, mail routing, replication and other
administration tasks
 Administration and manage of firewall to protect server from unauthorized access, restrict
Internet access to users and allow specific users/groups, privacy protection against hacker’s
protection and port-blocking (IP Tables, Pfsence, Zero shell) etc
 Responsible for Backup ensuring scheduled / unscheduled backups of MS SQL database,
Qmail Server, CVS Server, Linux Server and File Server etc
 Coordinate with ISP, Vendor (Microsoft, Airtel, and Tata) and Branch Office regarding Link
connectivity, software problem, Server/Desktop breakdown and Hardware Replacements
 Assessing organizational requirements of Software, Hardware, Network and up-gradation
and suggest to IT Manager/Top Management for smooth operation of IT Department
 Installation , maintenance and administration of Oracle 10g, 11g and Mysql database
Senior Customer Support Engineer - Progressive Info Tech Pvt. Ltd. (2005 to 2007)
Noida, Uttar Pradesh
 Resident at Amway India to manage Desktops/Laptops, Network Printer Wi-Fi Routers &
Switches
Education

4. Bachelor’s of Science, Information Technology (Distance Education) - Sikkim Manipal
University
Certified Training
 Microsoft Certified Professional.
 Red Hat Certified Engineer on RHEL 5 with Cert. No. 805008273936131.
 Completed Training on Oracle 10g from Ducat (2010)
 Completed Diploma in Computer Hardware & Networking from ET&E.
Additional Information
Technical Skills
Hardware : IBM, HP, Broadband, VPN, Printer Server, Wireless component
Operating System : All Windows and Linux Operating System.
Server : Windows Server 2003/ 2008 administration
Databases : Oracle 10g, Oracle 11g
Languages : SQL, PL/SQL, UNIX Shell Scripting.
Oracle tools : Data Guard, SQL, SQL Plus, PL/SQL, Export/Import, Backup and Recovery,
Tuning, Network, RMAN, OEM, Active Data Guard and Data Pump (expdp/impdp)
Personal Details:
Name: Mr. Raghuvir Singh Chauhan
Father’s name: Late Shri Mohan Singh Chauhan
Passport no. : K0132206
Marital status: Married
Present address: 30/124 Street No-6b Vishwas Nagar,
Shahdara Delhi-110032.
Mobile no.: +919313622520
Email address: raghuvirsingh23@gmail.com