SUMMARY

• Over 8 Years of specialized experience in IT Industry as an Oracle Database Administrator on different flavors of UNIX (Red Hat Linux, HP - UX, Sun Solaris, IBM AIX) environments.
• Experience in installing, configuring, administering and managing oracle databases & implementing solutions like High availability (HA), Disaster & Recovery, Cloning, and Database security.
• Very good experience as Oracle DBA in production, development and test environments
• Performed Migration and Up gradation of databases to 10g and 11g.
• Having good experience in Implementing RAC 10G/11G in different UNIX platforms.
• Expertise and implemented Oracle 11g RAC software with ASM
• Installed & Configured Oracle 10g/11g grid control and maintained in large environments.
• Implemented & configuring replication technology using Data guard & Oracle Golden Gate installation, configuration and troubleshooting on Linux & UNIX Platforms.
• Migrated oracle databases with minimal downtime from 10g/11g AIX & Solaris to Linux.
• Construction of Catalog Databases and developed scripts to perform Backups of Large Databases to fit the backup window using RMAN.
• Implemented RMAN backup (Full, incremental and cumulative) and recovery and disaster recovery using Standby database or Data Guard.
• Setup, Configured and Maintained Oracle Data Guard on 10g /11g to control Primary and Standby Databases and also to ensure disaster recovery using various data protection modes.
• Performance tuning of the database - SQL Tuning, Used Tuning utilities like Statspack, TKPROF, Explain Plan, AWR, ADDM and Tuning of SGA, Distribution of disk I/O, Sizing of tables and indexes. Identifying bottlenecks with memory and disk contentions.
• Have good experience in Creating databases & database objects like table, index, table space, rollback/undo segments and views & analyzed relevant objects to collect statistics to tune system performance.
• Data loading using SQL*LOADER, Logical backups using full export and DATAPUMP.
• Database replication using snapshots, materialized views, import/export and advanced replication methods.
• Have knowledge on Linux/Solaris administration on OS installations.
• Experienced in database reorganization regularly for removing row migrations and fragmentation using export and import utilities. Taking care of table space related issues like increasing the storage parameter values, resizing the data files, adding new data files etc.
• Clear documentation was prepared on all the processes like program specification, bugs fixing logs & change requests for future reference
• Interacting with the Oracle support on Service Requests and implementing the solutions provided for successful completion of the tasks.

PROFESSIONAL EXPERIENCE

Confidential, Durham, NC

Oracle DBA

Responsibilities:

• Installed Oracle DB 10g, 11g RDBMS, Applying Oracle Critical patch updates, Implemented and Managed Replication, Backup and Recovery support and performance tuning etc.
• Provided 24x7 support and on call support on rotational basis.
• Installed Grid Infrastructure Software on new Linux Servers and Failover environments and Oracle Grid Control 11g Installation.
• Installed OEM agent and worked on hooking up to the grid.
• Experienced in implementing ASM features.
• Applied necessary Patches during installation and also in up-gradation of databases.
• Extensively worked in setting up Oracle physical standby database using Data guard.
• Worked on Data Guard Feature, Implemented building and Rebuilding of Standby Databases.
• Involved in switching primary database to standby and standby to primary during regular maintenances of catalog databases and DR databases.
• Utilized data pump tool for exporting and importing the data between databases.
• Involved in and Upgraded Analytical Databases from 10g to 11g.
• Worked on Performance tuning of queries consuming Excessive Resources or slow running queries by providing Required Hints to the Query.
• Supported development effort by providing SQL statement tuning and optimizing ETL procedures and removing load and query performance bottlenecks by using Explain Plan.
• Set up and managed Cold Backup for databased up to a 3-Tb in size,
• Managed daily online backups (Level-0 and Level-1) and Archive Backups using RMAN.
• Involved in migration of databases from 10g to 11g using export/import and data pump export/import utilities.
• Performed database refresh activities for business requirement and tuning purposes.
• Weekly Data Refresh from Production to Development and Test environments using Data Pump export/import.
• Heavily involved in user management, Table space Management, Session Management, undo Management issues.
• Experienced in managing space issues in the Database Level for table space and Regular file system cleanup at UNIX level.
• Worked with peregrine/Triole ticketing tools for resolving the tickets.

Environment: Linux, Solaris 10, Hp-Unix, Oracle 9i, 10g, 11g,OEM, SQL*Plus, XMing, Putty, ASM, Data Guard, TSM

Confidential, Princeton, NJ

Oracle DBA

Responsibilities:

• Provided 24x7 support and On-Call rotation when needed for very large databases.
• Installed Oracle 11g on Linux and Worked on RAC 10g and worked on ASM feature.
• Estimate the size of the database and its objects (in large database of 1 to 2 Terabyte).
• Upgraded database from Oracle 9i to 10g and 10g to 11g, having a good exposure on Oracle11g.
• Installation and configuration of Oracle 11g RAC 2 node on Linux.
• Applied CPU security patches in both RAC and standalone systems in ASM environment.
• Experience with Oracle 10g/11g grid control.
• Responsible for maintaining Oracle 11g/10g standby databases in Solaris and Linux
• Done up-gradation from 10g to 11g and applied patches when required.
• Configured 11g new feature Active Data guard on 11g and maintained standby databases.
• Installed and configured Golden Gate on 11g database for the replication.
• Resolved the issues in conflicts between the target and source database in golden gate.
• Implemented Bi-Directional replication in golden gate.
• For the improvement of database performance implemented database tuning and its requirements and reviewed it.
• Involved in Database and Transaction log Backups and Restoration, backup strategies, scheduling the backups. Backing up system & user databases and restoring them as required and Create Database users and roles and implement appropriate user security.
• Experienced with Oracle 10g/11g ASM feature.
• Migrated Non-ASM databases to ASM environment for high availability on 11g.
• Implemented active-active configurations usually require data conflicts to be managed by the application, suitable for custom applications.
• Implemented Oracle Replication through materialized view.
• Supported development effort by providing SQL statement tuning and optimizing ETL procedures and removing load and query performance bottlenecks by using tools Explain Plan, SQL Trace, TKPROF, TOAD and Oracle Enterprise Manager.
• Performance tuning of Queries by maintaining Aggregates, Compression, partition, indexing and use of Hints, Stored outlines, Statistics for the same.
• Experience with database partitioning and responsible for daily loads.
• Experience with DDL and DML operations and having sound knowledge.
• Good experience with Oracle performance issues in both application tuning &memory tuning.
• Trouble shooting of various database performances by proper diagnosis at all levels like SQL, PL/SQL, database design, database tables, indexes, Instance, memory, operating system and java calls.
• Writing UNIX shell scripts to manage Oracle environment and application processes.

Environment: RHEL 5, Sun-Solaris -9, Oracle 9i/10g/11g, 10g/11g RAC, Golden Gate, Toad, 10g Grid, OEM, ASM Oracle Streams, ERWIN, Oracle Gateway, SQL*Plus, Shell Scripting

Confidential, NYC

Oracle DBA

Responsibilities:

• Involved in gathering user Requirements, application design, and analysis of hardware requirements to meet business needs.
• Prepared a step-by-step installation document for the 10g RAC on Linux operating system.
• Configuration of system to achieve High Availability, Load balancing and automatic fail over functionality.
• Install, upgrade and maintain Oracle 10g on Sun Solaris and Windows 2003
• Application Tuning by tuning queries, identifying problematic code, creation of indexes, re-writing queries using an optimized path, Creation of Materialized Views and gathering necessary statistics on objects etc.
• Implementing Database Security, Management of role-based security.
• Database Restore using RMAN, Cold Backup and Export.
• Applying Patches 10.2.0.1 and applying Oracle DST Patches on Oracle database.
• Performing day-to-day database administration tasks like Table space usage, checking alert log, trace files, monitoring disk usage, Table/index analyze jobs, database backup.
• Cloning of databases from production to test environments.
• Periodic data refresh from production to testing environments, Re-organizing database structures etc.
• Actively involved in validation of the data files using DB Verify Utility. In order to solve Block corruption Errors.

Environment: RHEL 4, Hp - Unix 7, Oracle 10g, 9i, 10g R1, Toad 8.5.3,RMAN, OEM, PL/SQL, SQL*Loader

Confidential, New Brunswick, NJ

Level1/2 Oracle DBA

Responsibilities:

• Provided 24*7 Support for Production environment for Extraction, Loading and transformation of Data in Data Mart. Remote monitoring and tuning of Database Processes in the Client environment
• Design Evaluation and Analysis of physical and logical model.
• Involved in Installation and customization of Databases (10g&9i) in Windows, Linux and Solaris environments
• Involved in Schema management, Table space Management, User Creation.
• Monitoring the Extraction and loading processes of Data.
• Upgraded and applied patches as and when required. Database Refreshes from Prod to Dev. Troubleshooting Day-to-Day Users Issues in various modules.
• Responsible for Oracle implemented backups like LOGICAL & PHYSICAL i.e. Export & import and also having experience with EXPDP & IMPDP
• Evaluated the hardware requirements before upgrading/migrating the database.
• Good experience with recovery managed backups i.e. RMAN
• Migrated the database from non-Oracle to Oracle i.e. SQL Server to Oracle.
• Maintained and audited Application and data servers.
• Documented the complete project including all pre installation, post installation and database configuration steps.
• Involved in writing UNIX shell scripting for automating the jobs.
• Manage users, privileges, profiles, and schemas.
• Experiences in using automatic monitoring and management processes like batch processing using Crontab for processes like import, export databases.
• Used analyze table, analyze indexes to tune queries and increase performance.
• Experience with SGA tuning and Histograms understanding and sound knowledge in SQL execution plan.
• Tuning Oracle 9i database servers using tools dynamic, dictionary views, Stats pack, ADDM, AWR Diagnostic and tuning packages.

Environment: Oracle9i/10g, Linux, AIX5.1, Hp-UX, Sun Solaris, SQL, PL/SQL, Shell Scripting.