Getting and understanding given documents, if there are any errors raising the request, once there are clarified working on them
After finishing every task, need to do reconciliation and unit testing
Identifying long-running queries, scripts, and tuning
Understanding various indexes and using appropriately in the queries
Identifying in the eliminating spool spaces, skewness issues
According to the business functionality, creating, manipulating various scripts of BTEQ, FL, ml, etc.
Having good knowledge of data and dimensional modeling
Working with various Unix commands day to day like LS, Grep, Wc, SCd, TEE, etc
As a Teradata developer, responsible for maintaining all DBA functions (development, test, production) in operation 24×7.
Performance tuning, including collecting statistics, analyzing explains & determining which tables needed statistics. Increased performance by 35-40% in some situations.
Multiload, BTEQ, created & modified databases, performed capacity planning, allocated space, granted rights for all objects within databases, etc
Moved databases between machines.
Installed patch sets and upgraded Teradata.
Automated data warehousing and datamart refreshes using the Transportable tablespace option.
Worked on creating and managing the partitions.
Performed database health checks and tuned the databases using Teradata Manager.
Deliver new and complex high-quality solutions to clients in response to varying business requirements and Creating and managing user accounts.
Installed Teradata drivers for the Teradata utilities.
Refreshed the data by using fast export and fastload utilities.
Used Teradata Administrator and Teradata Manager Tools for monitoring and control the system.
Creating and modifying MULTI LOADS for Informatica using UNIX and Loading data into IDW.
Loading data from various data sources and legacy systems into Teradata production and development warehouse using BTEQ, FAST EXPORT, MULTI LOAD, FASTLOAD, and Informatica.
With the in-depth expertise in the Teradata cost-based query optimizer, identified potential bottlenecks with queries from the aspects of query writing, skewed redistributions, join order, optimizer statistics, physical design considerations (PI and USI and NUSI and JI, etc), etc. In-depth knowledge of Teradata Explain and Visual Explain to analyze and improve query performance.
Working as an On-Site Teradata Lead DBA, doing DBA activities that are Implementation of data and table-level security, setting up access rights, and space rights for the Teradata environment. Performance tuning, Monitoring, and reporting Review system utilization by the user.
Acted as a liaison between the offshore and onsite teams.