SUMMARY:

• Over 5+ years of experience as an Oracle PL/SQL developer with design, development, and testing of business applicationssuch as OLTP, OLAP, Enterprise, web based, Client/Server architectures.
• Worked on ETL process consisting of data transformation, data sourcing, mapping, conversion and loading.
• Worked on convert business logic into Greenplum functions for integrating source data into Data warehouses.
• Worked extensively on various technologies like Informatica PowerCenter 9.6.1/9.1/8.6/8.5 , Oracle 9i, 10g/11g, PL/SQL, GreenPlum.
• Expert in writing SQL, PL/SQL modules like functions, stored procedures, cursors (Implicit, Explicit, REF), packages, triggers, indexes, collections(Nested tables and Varrays) and materialized views.
• Proficient in Oracle tools and utilities such as TOAD, PL/SQL Developer, SQL Developer, SQL Navigator.
• Supported Advance PL/SQL using Cursor, REF Cursor, and Native Dynamic SQL .
• Developed Complex trigger using PL/SQL for data integrity and enforcing business rules.
• Moved columns of data in and out of database tables using PL/SQL program units by passing collections as parameters.
• Extensive experience in data migration techniques using OracleExternal Tables, SQL* LOADER, UTIL file loader and batch processing.
• Experienced in data analysis, data modeling, development, testing and documentation of projects.
• Carried out testing in test database for upgrading/migrating from Oracle 9i to Oracle 10g.
• Experience in developing logical and physical database design, data modeling using Erwin & Informatica (Power Center 6.1).
• Involved in creating mappings, transformations in Informatica, tuning& monitoring workflows.
• Used Cursor Variables to pass query results sets between PL/SQL programs and client application.
• Extensively worked on the Extraction, Transformation and Load (ETL) process using PL/SQL to populate the tables in database.
• Experience with DBA activities like creating Tablespaces, granting and revoking privileges on database objects.
• Improve the performance of the slow SQL queries by implementing indexes, using FORALL and BULK COLLECT.
• Expertise in performing Data export, Import and various operations using TOAD, SQL DEVELOPER.
• Extensively worked in Client - Server application development using Oracle 11g/10g/9i FORMS 9i/6i, REPORTS 10g/6i, Oracle Import and Export Utilities.
• Experience in application development using various advanced features of Oracle like Bulk Collections, Table Functions, Autonomous Transactions, Dynamic SQL, Object types and Records.
• Experience in Installing Software’s and Configuring Databases.
• Experience in UNIX Shell Scripting for batch processing.
• Strong Trouble-shooting, Problem solving, Analytical & Design Skills.
• Comfortable to work with a team or work individually.
• Highly motivated self-learner with ability to develop proficiency and adapt to new technologies and methods in a short period of time.

TECHNICAL SKILLS:

Data Warehousing ETL: Informatica PowerCenter 9.6.1/9.1 /8.6 , (Source Analyzer, Warehouse Designer, Transformation Developer, Mapplet Designer, Mapping Designer, Repository Manager, Workflow Manager, Workflow Monitor and Informatica Server).

Databases: Oracle 11g/10g/9i/8.0, Greenplum PostgreSQL),MySQL, SQL Server 2005/ 2000/2008

Programming: SQL, PL/SQL, Unix, Shell Scripting

Tools: TOAD, SQL Developer, Hive, Hbase, Pig, Sqoop, Map Reduce,pgAdmin, Aginity,Autosys, Team foundation Server

Data Analysis: Requirement Analysis, Business Analysis, Detail Design, Data Flow Diagrams, Data Definition Table, Business Rules, Data Modeling, Data Warehousing, System Integration.

Environment: UNIX(IBM AIX,Sunsolaris), Sun solaris

PROFESSIONAL EXPERIENCE:

Confidential, Tampa, FL

OracleSQL, PL/SQL developer

Responsibilities included:

• Created Informatica mappings, workflows and application using Informatics BDE developer.
• Created Infra commands to run workflows on UNIX server.
• Designed workflows with mappings, command task and decisions used.
• Monitored mappings, workflows and applications using Informatica BDE Monitor.
• Created and used reusable Mapplets and transformations using Informatica Power Center.
• Created data break points and error break points for debugging the mappings using Debugger Wizard.
• Created session and work flows to help schedule mighty loads and process data from all source.
• Worked on different tasks in Workflows like sessions, event raise, event wait, decision, e-mail, command, worklets, Assignment, Timer and scheduling of the workflow.
• Performed Unit testing, Integration testing and System testing of Informatica mappings and applications.
• Implemented slowly changing dimension in various mappings.
• Created Test plans for unit-test, System Integration Test and UAT and tested code in all Development.
• Prepared ETL standards, Naming Conventions and wrote ETL flow documentation.
• Extensively worked with transformations like Lookup, Update Strategy, Expression, Filter, Router, Joiner, and Aggregate.
• Ported code from Oracle to Greenplum
• Reverse engineered data models to improve Green plum function queries.
• Loaded data into a Greenplum database instance using external tables, SQL copy and insert commands, and parallel load utilities.
• Worked on Greenplum features, benefits, and understanding architecture and how Greenplum supports redundancy and high availability.
• Designed and implemented table partitioning for handling very large tables.
• Improve query performance by following performance enhancement tips and database best practices.
• Created autosys jobs for automation of jobs.
• As part of the production support team, contributed to the effort to expand the number submitters by analyzing, and testing files, and setting up production Moveit jobs.
• Involved in analysis, design and coding of Oracle processes in PL/SQL to build packages.
• Design and Development of data validation, load processes, test cases using PL/SQL, Stored Procedures, Functions, Triggers using Oracle 11g.
• Working on the ETL side of the process to load data into database from different servers.
• Created partitions for parallel processing of data.
• Developed UNIX Shell scripting for job automation and daily backup.
• Involved in performance tuning using with TKPROF.
• Documentation of the business process through Designer.
• Writing backend stored procedures,event driven triggers, functions, and packages as needed.
• Writing SQL queries, Cursors using embedded SQL, PL/SQL.
• Testing and debugging of the applications.
• Implementation and end user training.
• Worked on production support, trouble reports which were received from clients.
• Expertise in debugging the code and creating the exceptions to handle bad data and send them to error log files.
• Error handling using system defined exceptions and user defined exceptions like INVALID NUMBER, NO DATA FOUND etc., and PRAGMA EXCEPTION INIT.

Technical Environment: Windows 7, Oracle 11g,Greenplum(PostgreSQL),Informatica, Oracle Application server 11g,Oracle Enterprise ManagerTools: PL/SQL Developer, Toad, SQL*Plus, Putty, WinSCP, HP Quality center version control, Work Load control Center.

Confidential

Sr.Oracle SQL, PL/SQL developer

Responsibilities included:

• Database design and development including Tables, Primary and Foreign Keys,Indexes, Stored Procedures and Database access policies for the company’s education system.
• Generated SQL and PL/SQL scripts to install create and drop database objects, including tables, views, primary keys, indexes, constraints, packages, sequences, grants and synonyms.
• Maintained a series of UNIX shell scripts to manage batch order processing.
• Database performance monitoring and identifying bottlenecks hindering the performance of the database.
• Created changes in the database according new requirements (new tables in the existing database and fields in the existing tables).
• Constructed and implemented multiple-table links requiring complex JOIN statements, including outer-joins and self-joins.
• Tuned SQL statements using hints for maximum efficiency and performance, created and Maintain/modify PL/SQL packages, mentor others with the creation of complex SQL statements, perform data modeling and create/maintain and modify complex database triggers and data migration scripts.
• Created complex Stored Procedures and Views to be used for the Reports.
• Manage existing data Sizing the database for future growth.
• Created database objects tables, indexes, views, synonyms.
• Modifying the database design and structure, as necessary, from time to time upon information given by application users and developers.
• Created FORMS and REPORTS using Visual Basic.
• Developed PL/ SQL modules such as packages, triggers, procedures and functions.
• Heavily involved in Performance Tuning at the application level.
• Developed reports using Oracle reports.
• Developed UNIX Shell scripts that will interact with the PL/ SQL Objects.
• Documented and performed unit testing for all components prior to migrating them to production.

Environment: Oracle 11g/10g, Oracle REPORTS Developer (11g), UNIX Server 4.3, Rational Clear Quest, SQL NAVIGATOR. PL/SQL Developer, Toad, SQL*Plus, Putty, WinSCP, HP Quality center version control, Work Load control Center.