Maintenance Application

Dharani Natarajan

Mob: +1-610-***-****

Email: *******.*********@*****.***

Over 8 years of experience in BEA/Oracle Weblogic Servers installation, configuration, maintenance and troubleshooting.

Experience in customizing the application servers as per Dev,QA Stage and Prod.

Expertise in Installation, Configuration, Trouble-Shooting and Maintenance of BEA WebLogic Server, SOA, OSB, Tomcat Web Server, Apache Web Server on different UNIX flavors like Linux and Solaris.

Proficient in working in Sun Solaris, Linux, UNIX and Windows Environments.

Configured Web Security tools such as SSL Certificates and digital certificates.

Excellent database knowledge using Oracle.

Strong knowledge of configuring JDBC connection pools, JMS Queues, Topics and Connection factories.

Configured JNDI server as repository for EJB Home stubs, JDBC Data source, JMS connection factories, queues and topics.

Performance tuning for JVM,JDBC, connection pools and datasource.

Developed/customized startup and shutdown scripts for the WebLogic servers.

Experience in Cluster Management, setting up Node Managers, Admin Servers.

Experience in writing Scripts to handle complex automation / administration using Shell scripting

Experience in setting up database connectivity to application servers.

Experience in taking thread dumps and heap dumps for troubleshooting.

Experience in End-to-End engagement in Environment Build & deployments and batch processing. Experienced in setting and managing monitoring software experience in HP Site Scope

Experience in full Project Life Cycle including Analysis, Design, Testing and Documentation.

Performing in-depth problem troubleshooting, resolution, and root cause analysis for application issues in production.

Deploying applications to Staging and Production environments and troubleshooting issues in the process.

Training and mentoring in the technologies involved with web engineering and administration.

Extensive experience in troubleshooting memory management issues on application servers.

Worked in a 24/7 environment on rotation basis and involved in troubleshooting severity one tickets.

Experience in coordinating projects with offshore and communicating to clients for requirement gathering and status reporting.

Good communicator, team player and have good organizational skills.

Work Experience:

Middleware Application Administrator

Verizon - Tampa, Florida.

Dec 2012 - till present

Technologies: Weblogic, Oracle 11G.

OS: SunSolaris10

Tools:Exceed,Toad,WinScp,Keystore Explorer, beyond compare

Environment: SUN Solaris, Windows 2008, Weblogic Application Server 9.x, 10.x, Apache Web Server 6.0, Java, J2EE, JSP, EJB, XML, JDBC, JavaScript, Oracle 9i,10g, HTML, Shell

Responsibilities:

Installed and configured enterprise applications on BEA Weblogic Application Server 9.x,10.x and Apache Web Server in Sun Solaris environment.

Deployed Various J2EE applications on to the clusters and Application servers and supported accordingly.

Configured JDBC resources, data sources and bounded to the J2EE applications, configured the connection pools for the various data sources.

Configuring Execute Threads, Connection Pools and JMS Queues etc. for different components of the system.

Troubleshooting applications, servers, clusters, OS, testing problems and customer problems.

Tuning for JVM, JMS Server and filestore, connection factory, threads, JDBC- connection pools and datasources.

Using thread dumps to diagnose and resolve performance bottlenecks, memory leaks, excessive garbage collection, threading issues and other java coding problems.

Developed shell scripts to automate the maintenance process of the Web Logic and to perform other application related tasks.

Created user groups, roles and assigned users to Groups and Roles.

Developed UNIX shell scripts that automate the Weblogic Administration (recycling the application server, deploying customer applications, logs rotation, monitor applications state, etc.)

Configuring SSL Certificates for Weblogic server.

Effectively interacted with the users on a daily basis, decreasing downtime and increasing user productivity.

Production transactions analysis using SQL queries and PL/SQL procedures.

Working with various other teams like load balancer team, DBAs, testing, networking and dev to resolve production issues.

Providing 24x7 supports to testing, staging and production environments

Documenting all issues and RCA as well and maintaining the KEDB and induction manuals.

Weblogic Admin

Bright house networks - Riverview, Florida.

Feb 2010 - Dec2012

Performed Installation and Administration of BEA Weblogic 9.x and apache webserver

Configured SSL Certificates for Weblogic servers

Involved in Weblogic testing and analyzing performance metrics and creating respective Weblogic resources.

Deployed the WAR, JAR and EAR applications in Weblogic server responsible for application changes across different platforms- development, testing, staging and production environments.

Developed several scripts using ksh and bash to automate jobs. ( Security audit scripts, password automation scripts, network stats, file storage, monitoring scripts, generating report from database etc)

Created Weblogic domains, managed servers, clusters, machines and start up scripts.

Configured JDBC resources, data sources and bounded to the J2EE applications, configured the connection pools for the data sources. Created the Oracle Application server, JMS Server, JMS Connection Factories, Queues, File Store and monitored.

Managing and Monitoring the JVM performance by Weblogic Heap Size, garbage collection, JDBC Pools and taking Thread dumps analyzing to find the problems in application.

Years of experience in deployment of enterprise applications on Weblogic application servers.

Developed scripts (start, stop, backup & recovery processes) for Weblogic application server administration.

Configured One-way and Two-way SSL Certificates for Weblogic Server

Monitored Weblogic server resources using sitescope

Involved in 24/7 support for production environments

Tata Consultancy Services Ltd. - (Offshore) India

Dec 2008 –Jan 2010

Client: Rogers Communication Inc.

Designation: IT Analyst Role: Middleware Application Support analyst

Responsibilities:

Below are the main responsibilities and day to day activities handled:

Installed and configured Weblogic Application server.

Installed and configured Apache web server in various environments to proxy requests to WebLogic and WebSphere

Software installation of ear,jar & war file

Environment build activities

Handled Environment Upgrade Activities

Troubleshooting environment issues and defect fixing

Amdocs Vision21 deployments and batch process

Middle ware applications monitoring and support

Co-ordinating with Dev, QA & DBA Teams

Documenting the RCA (Root Cause Analysis), Induction manuals and etc.

Satyam Computer Services Ltd, - [Offshore] India

Client: Bharat Sanchar Nigam Ltd., [BSNL]

Designation: Software engineer Aug 2006 to Dec-2008

Responsibilities:

Below are the main responsibilities and day to day activities handled:

Communicating with the clients and understanding their requirements and interacting the same with the team members.

Analysis & Implementation of the new changes in live environment.

Reconciliation of the complete data to avoid any discrepancy in current billing system.

Weblogic middleware applications monitoring and support

Troubleshooting environment issues and defect fixing

Software installation of ear files

Worked with Open Bill a package for deploying the deliverable

Accounting Module development, testing and maintenance.

Accomplish the day to day operations of the project.

Technical Skills:

Below is a list of important hardware / software products that I have worked with.

Technology: BEA Weblogic Administration 8.1,10.3,11g, Oracle DBA, Unix/Linux, Webshphere

OS: Windows, Linux

Programming Languages: Oracle PL/SQL, Unix Shell script,

Database: Oracle9i,10g,11g

Server Infrastructure Products: OSB,ALSB, SOA Suite

Domain Related Tools: Amdocs Vision21, SOAP UI,Modula Suite (Mediation,Reconciliation & Rating)

Unix Tools: Exceed, Putty

Monitoring tools: Sitescope,nagios

DB Tools: Toad

Ticketing Tools: IBM Clear Quest

File Management Tools: Winscp,SVN,Filezilla,Beyond Compare, Keystore Explorer

Education:

Bachelor of Science in Computer Science [B.Sc] 2006, Gobi Arts and Science College, India

Master of Computer Applications [MCA in part time] 2010, Madurai Kamaraj University, India.

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