Mahendran Varadharajan is a seasoned Oracle Apps DBA with over 16 years of experience in database administration and project management, specializing in various versions of Oracle EBS and database technologies. His expertise encompasses a wide range of skills, including performance optimization, ERP implementation, and managing complex database environments on multiple platforms. He has collaborated with notable clients and possesses numerous certifications, demonstrating his commitment and proficiency in the field.

1. Internal to Wipro
MAHENDRAN VARADHARAJAN
Result oriented, high-energetic technocrat with a rich experience in Database
administration, Oracle Application.
c
Oracle APPS DBA
MAHENDRAN VARADHARAJAN
+971-528923916 – Dubai
dbajob2021@gmail.com
Key Skills
Oracle APPS DBA
SQL Database Administration
Oracle DBA
EXADATA Oracle DBA
ODA Administration
Performance Specialist
OEM Administration
ERP implementation (11i/R12)
ERP Upgrade (11i/R12/R12.2)
Project Management
Advance Presentation
Summary
16+ years of experience in Oracle Apps DBA, Oracle DBA, Oracle RAC
DBA, ODA (Oracle Database Appliance) DBA & SQL DBA. Exadata x2,
Exadata x 5 & Exadata x 8 administration.
Experience in Oracle EBS R12.2.8, R12.2.6, R12.2.4, R12.1.3, 11i & R11
versions in Windows, Solaris, AIX, and various Linux platforms, Exadata
x2,5&8 administrations including the migrations and upgradation.
Oracle database Administration in 12c, 11g, 10g, 9i & 8i versions and
worked on Taleo 13c, Hyperion 11.1.2.3, OBIEE 11.1.1.7.1, OBIA 11.1.1.8.
Expertise an implementation and support of Oracle RAC, Stand by
database, OEM & data guard and OVM
Expertise an implementation and support of Oracle RAC, Stand by database,
OEM & data guard.
100+ Installing / Upgradation projects. Configuring, Managing and
Monitoring of SQL Servers 2002, 2005, 2008, 2012, 2014 & 2016.
Configuration and maintenance of dbWatch.
Certified – Oracle Certified Professional (OCP), Certified – Six Sigma Green
Belt, Oracle ODA Administration training from Oracle Corporation.
APPS DBA 11i & R12 training from Oracle Corporation, Oracle Virtual
Machine Training from Oracle Corporation.
Oracle 9i, 10g, 9i RAC Database training from Oracle Corporation, Oracle
APPS DBA 11i & R12 training from Oracle Corporation.
Oracle Virtual Machine Training from Oracle Corporation
Corporate clients Affiliate – UAE (2012 – present)
Wipro Ltd Dubai, Emirates Nuclear Energy Corporation – Abu Dhabi, EXPO 2020, Dubai – INJAZAT, Abu Dhabi – Abu
Dhabi Tourism Authority – Emirates National Oil Company (ENOC), Dubai – Transguard group (Emirates Security) , Dubai
– YAS HOLDINGS, Abu Dhabi – Fujairah e-Government – Bukhatir Group Sharjah
Corporate clients Affiliate – International (2004 – 2012)
Oracle Corporation – International, General Electric – India US, Marvel Semiconductors India US, NATO UK, Bank of
Uganda, TPI Spain.
Education
B.E in Electronics & Communication Engineering from PGP Engineering College – 2004
Certifications
Oracle Certified Professional – Database Administration.
Six Sigma – Green Belt Certified.
Project Manager, Senior Oracle APPS DBA, Exadata DBA, SQL Database
Administrator
OCP, EXADATA Oracle DBA, ERP Administrator, Oracle Core DBA,
Database solution Architect, License Manager, system administrator, Unix
administrator, ODA Administrator, database Performance Specialist,
Process oriented, followed by green belt methodology – ITIL Trained &
GB Certified.

2. Internal to Wipro
Work Experience
Mar ‘21 – Present in Wipro Limited, Dubai.
Sr. Oracle Apps DBA. Upgrade project on ADIB Bank, Abu Dhabi
Oracle EBS R12.2.8, R12.2.6, Linux platforms, migrations and up gradation 12.1.3, 12.2.4, Hyperion 11.1.2.3, Red
hat Linux Oracle database 11.2.0.4, 12c - 12.1.0.2.0, 19c database upgrade.
Mar ‘20 – Mar ‘21 in Emirates Nuclear Energy Corporation (ENEC), Abu Dhabi
Sr. Oracle Apps DBA and SQL DBA. Tech Mahindra Abu Dhabi.
Technology
Oracle EBS R12.2.8, R12.2.6, R12.2.4, R12.1.3, 11i & R11 versions in Windows, Solaris, AIX, and various Linux
platforms, Exadata x2,5&8 administrations including the migrations and up gradation 12.1.3, 12.2.4, Oracle RAC,
Oracle Database Appliance (ODA), Hyperon 11.1.2.3, Red hat Linux, DMZ setup for isupplier module, P2ES for Oil
& Gas, Oracle database 11.2.0.4, 12c - 12.1.0.2.0, OEM 13c, 11g, 10g, 12 EM, Middleware: Apex, Oracle Business
Intelligence (OBIEE 11.1.1.7.1), Oracle Business Intelligence Applications (OBIA 11.1.1.8 - Finance, HRMS and
Procurement), SQL Express, SQL Server 2000, 2005, 2008/2008, R2/2012, 2014 & 2016.
Jul ‘19 – Mar ‘20 in Accel Frontline, Dubai as Sr. Oracle Apps DBA and SQL DBA.
Technology
Oracle Database Appliance (ODA), Oracle EBS 12.1.3, 12.2.4, Oracle RAC, Hyperon 11.1.2.3, Red hat Linux, DMZ
setup for isupplier module, P2ES for Oil & Gas, Oracle database 11.2.0.4, 12c - 12.1.0.2.0, OEM 10g, 11g, 12 EM,
Middleware: Apex, Oracle Business Intelligence (OBIEE 11.1.1.7.1), Oracle Business Intelligence Applications
(OBIA 11.1.1.8 - Finance, HRMS and Procurement), SQL Express, SQL Server 2000, 2005, 2008/2008, R2/2012, 2014 &
2016.
Project
Client EXPO 2020 Jul 19 – Dec 19
4 node Oracle 12c RAC Implementation with 13cOEM implementation, database platform migration from UNIX to
Solaris with database upgrade from 11g to 12.2.0.1 and standby implementation using data guard.
Client YAS HOLDINGS Jul 19 – Dec 19
Implementing EXADATA X-8 with 2 Node RAC implementation, database upgrade from 11g to 12.2.0.1, Oracle
ERP upgrade from R12.1.3 to R12.2.8. Disaster Recovery DR Implementation.
Client Fujairah e-Government Jul 19 – Dec 19
Upgrade R12.1.3 to R12.2.2 Oracle Application server with database upgrade from 11.2.0.4 to 12.2.0.1. PCP
implementation with F5, Load balancer and standby creation. Implemented SQL Server High Availability on 2014 version
Enterprise Cluster, monitoring SQL Server jobs includes Backup, Database space, Log space etc. In SQL Server Replication,
Mirroring, Log Shipping, Backup/Recovery
Jan ’16 – Jun ’19 in Transguard (Emirates Security Group), Dubai as Sr. DBA
Technology
Oracle Database Appliance (ODA), Oracle EBS 12.1.3, 12.2.4, Oracle RAC, Hyperon 11.1.2.3, Red hat Linux, DMZ
setup for isupplier module, P2ES for Oil & Gas, Oracle database 11.2.0.4, 12c - 12.1.0.2.0, OEM 10g, 11g, 12 EM,
Middleware: Apex, Oracle Business Intelligence (OBIEE 11.1.1.7.1) on Exadata 7 Oracle virtualized machine,
Oracle Business Intelligence Applications (OBIA 11.1.1.8 - Finance, HRMS and Procurement), SQL Express, SQL
Server 2000, 2005, 2008/2008, R2/2012, 2014 & 2016.
Project
Implementation and support of Oracle Database Appliance (ODA) with Oracle R12.1.3 application and 11.2.0.4
oracle database, multi-node architecture with Parallel Concurrent Processing (PCP) system enabled. UAE VAT
implementation, Apex installation and WebLogic server installation. POC on upgrading R12.1.3 to R12.2.4 with
database from 11.2.0.3 to 12.1.0.2. Support project includes Oracle EBS 12.1.3 with 11.2.0.4 oracle database
version on Red hat Linux. Maintain multi-tier architecture for application server with load balancing configuration.
Support Oracle Business Intelligence (OBIEE 11.1.1.7.1) on Exadata 7 Oracle virtualized machine, Database
masking, cloning and Setup DMZ for I-Supplier module. Daily activities include apps and database patching,
cloning, database health checks, monitor database and application, Managing Database Objects like

3. Internal to Wipro
Creation/add/Indexing/Re-indexing, Storage tasks, space management including creation and maintenance of data
files and table spaces and other database structures like rollback segments, resizing redo logs etc., User
management Tasks like creating, dropping user and assigning him different Roles, Privileges and Profiles. AWR &
ADDM reports for the performance diagnostics of the database. Well-experienced in providing 24X7 & on call
support. DR setups for DB and Oracle Applications, SSL configuration, Applying Critical Patch Updates, Cloning
Oracle Applications using RMAN/ASM/Cold backups, High Availability, RMAN setup, Single Node and Multi Node
Installation – 11i/R12, AD Utilities, Data Install and HR Global patch, Oracle Apps SYSADMIN functions, installation
and creating Database, Data pump Import/Export of DB and Oracle Applications Performance Tuning, Oracle
Fusion Middleware Administrator activities including installation of web logic server, 11g Oracle Active passive data
guard setup. Implemented SQL Server High Availability on 2014 version Enterprise Cluster, monitoring SQL Server jobs
includes Backup, Database space, Log space etc. In SQL Server Replication, Mirroring, Log Shipping, Backup/Recovery, worked
on SQL Server 2012/ 2008 R2 migration from SQL Server 2005/2008. SQL Server 2005 Upgrading to SQL Server 2008/2008
R2/2012, Automation of SQL Server activities including scheduled and maintained routine Jobs. Implemented dbWatch to
monitor and maintain database from ventral location.
Nov ’14 – Dec ’15 in Dragon Oil (Emirates National Oil Company), Dubai as Sr. DBA.
Technology
Oracle Database Appliance (ODA), Exadata –X5, Oracle EBS 12.1.3, 12.2.4, Oracle RAC, Hyperon 11.1.2.3, Red
hat Linux, DMZ setup for isupplier module, P2ES for Oil & Gas, Oracle database 11.2.0.4, 12c - 12.1.0.2.0, OEM
10g, 11g, 12 EM, Middleware: Apex, Oracle Business Intelligence (OBIEE 11.1.1.7.1), Oracle Business Intelligence
Applications (OBIA 11.1.1.8 - Finance, HRMS and Procurement), SQL Express, SQL Server 2000, 2005, 2008/2008,
R2/2012, 2014 & 2016.
Project
Implementation and support of Oracle Database Appliance (ODA) with Oracle R12.1.3 application and 11.2.0.4
oracle database, multi-node architecture with Parallel Concurrent Processing (PCP) system enabled. UAE VAT
implementation, Apex installation and WebLogic server installation. POC on upgrading R12.1.3 to R12.2.4 with
database from 11.2.0.3 to 12.1.0.2. Support project includes Oracle EBS 12.1.3 with 11.2.0.4 oracle database
version on Exadata –X5 bare metal. Maintain multi-tier architecture for application server with load balancing
configuration. Database masking, cloning and Setup DMZ for I-Supplier module. Daily activities include apps and
database patching, cloning, database health checks, monitor database and application, Managing Database
Objects like Creation/add/Indexing/Re-indexing, Storage tasks, space management including creation and
maintenance of data files and table spaces and other database structures like rollback segments, resizing redo logs
etc., User management Tasks like creating, dropping user and assigning him different Roles, Privileges and
Profiles. AWR & ADDM reports for the performance diagnostics of the database. Well-experienced in providing
24X7 & on call support. DR setups for DB and Oracle Applications, SSL configuration, Applying Critical Patch
Updates, Cloning Oracle Applications using RMAN/ASM/Cold backups, High Availability, RMAN setup, Single Node
and Multi Node Installation – 11i/R12, AD Utilities, Data Install and HR Global patch, Oracle Apps SYSADMIN
functions, installation and creating Database, Data pump Import/Export of DB and Oracle Applications Performance
Tuning, Oracle Fusion Middleware Administrator activities including installation of web logic server, 11g Oracle
Active passive data guard setup. Implemented SQL Server High Availability on 2014 version Enterprise Cluster, monitoring
SQL Server jobs includes Backup, Database space, Log space etc. In SQL Server Replication, Mirroring, Log Shipping,
Backup/Recovery, worked on SQL Server 2012/ 2008 R2 migration from SQL Server 2005/2008. SQL Server 2005
Upgrading to SQL Server 2008/2008 R2/2012, Automation of SQL Server activities including scheduled and maintained routine
Jobs. Implemented dbWatch to monitor and maintain database from ventral location.
Nov ’12 – Nov ’14 in INJAZAT (Mubadala Group), Abu Dhabi as Sr. Oracle Apps DBA.
Technology
Oracle Database Appliance (ODA), Exadata X2,Oracle EBS 12.1.3, 12.2.4, Oracle RAC, Hyperon 11.1.2.3, Red hat
Linux, DMZ setup for isupplier module, P2ES for Oil & Gas, Oracle database 11.2.0.4, 12c - 12.1.0.2.0, OEM 10g,
11g, 12 EM, Middleware: Apex, Oracle Business Intelligence (OBIEE 11.1.1.7.1), Oracle Business Intelligence
Applications (OBIA 11.1.1.8 - Finance, HRMS and Procurement), SQL Express, SQL Server 2000, 2005, 2008/2008,
R2/2012, 2014 & 2016.

4. Internal to Wipro
Project
Support of Oracle Database Appliance (ODA) with Oracle R12.1.3 application and 11.2.0.4 oracle database, multi-
node architecture with Parallel Concurrent Processing (PCP) system enabled. UAE VAT implementation, Apex
installation and WebLogic server installation. Upgraded R12.1.3 to R12.2.4 with database from 11.2.0.3 to 12.1.0.2.
Support project includes Oracle EBS 12.1.3 with 11.2.0.4 oracle database version on Exadata X2.
Dec ’10 – Jul ’12 in Marvel Semiconductors, Bangalore as Sr. DBA.
Technology
Oracle Database Appliance (ODA), Oracle EBS 12.1.3, 12.2.4, Oracle RAC, Hyperon 11.1.2.3, Red hat Linux, DMZ
setup for isupplier module, P2ES for Oil & Gas, Oracle database 11.2.0.4, 12c - 12.1.0.2.0, OEM 10g, 11g, 12 EM,
Middleware: Apex, Oracle Business Intelligence (OBIEE 11.1.1.7.1), Oracle Business Intelligence Applications
(OBIA 11.1.1.8 - Finance, HRMS and Procurement), SQL Express, SQL Server 2000, 2005, 2008/2008, R2/2012, 2014 &
2016.
Project
Support of Oracle Database Appliance (ODA) with Oracle R12.1.3 application and 11.2.0.4 oracle database, multi-
node architecture with Parallel Concurrent Processing (PCP) system enabled. UAE VAT implementation, Apex
installation and WebLogic server installation. POC on upgrading R12.1.3 to R12.2.4 with database from 11.2.0.3 to
12.1.0.2. Support project includes Oracle EBS 12.1.3 with 11.2.0.4 oracle database version on Red hat Linux.
Supporting SQL Server 2005/2008. SQL Server 2005 Upgrading to SQL Server 2008/2008 R2/2012, Automation of SQL Server
activities including scheduled and maintained routine Jobs. Implemented dbWatch to monitor and maintain database from
ventral location
Feb ’08 – Dec ’10 in GE (General Electric) Research, Bangalore as Database leader.
Jun ’06 – Feb ’08 in Oracle Corporation, Bangalore as Oracle Application DBA.
Jun ’04 – Jun ’06 in IIHT, Bangalore as Database Trainer.
Training:
Oracle Exadata 7 Administering training
Trained Oracle VM Server for x86: Administration – Oracle Corporation
Six Sigma green belt training
IT Management Skills
PMP
IT Leadership training
Personal Details
Date of Birth : 15th
Sep 1982
Nationality : India
Languages Known : English, Tamil & Kannada.
Marital Status : Married
Visa : Employment
Driving License : UAE & India
Achievements:
Great conceptual trainer award – 2004 IIHT
Successful Upgrade project of the year for NATO, UK – 2007 Oracle Corporation
Best Cost-effective project – SQL Consolidation – 2008 GE
Innovative Project – Daily automate Clone – 2015 Dragon Oil
Region’s largest successful ODA Implementation Project – 2017 Transguard