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Senior Oracle Dba Resume

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Atlanta, GA

SUMMARY

  • Over 8 years of IT Experience as anOracleDatabase Administrator of real time challenging projects with system analysis, design including monitoring and maintenance.
  • I have good exposure to all stages of designing and implementation of database and ability to understand Functional Requirements and Design Documents.
  • Database administration, development, production support, installation, configuration, upgrades, patches, backup and recovery, database security, auditing and space management.
  • Installation and configuration ofOracle8i, 9i, 10g, 11g, 12c databases in Solaris and Linux environment.
  • Expertise on performing cold backups, hot backups, and recovery.
  • Designed and implemented centralized backups and recovery strategies using recovery manager (RMAN).
  • Use of RMAN scripts to perform full and incremental backups.
  • Experience with Flashback and RMAN recovery techniques.
  • Patching the databases with CPU/PSU on quarterly cycles or ad - hoc needs.
  • Installed and configuredOracle12c Cloud Control and deployed agents on managed targets.
  • Configured RAC database instances with two to four nodes.
  • Experience in using and creating SQL, PL/SQL stored procedures, functions, indexes, materialized views, partitioned tables, packages and triggers.
  • Created and refreshedOracledatabases for development, test and stage environments.
  • Performance Tuning: Experience in identifying poor SQL statements using Explain Plan, Stats pack, TKPROF, SQL Trace, OEM Cloud/Grid Monitoring, AWR, ADDM, SQL tuning advisor.
  • Experience in leveraging theOracleSupport for Service Requests.
  • Good experience in managing large OLTP and Data warehousing databases.
  • Creating shell scripts and scheduler jobs for monitoring purposes.
  • Involved in logical and physical database designs and worked as on-call support team member for administering OLTP 24X7 production databases.
  • Excellent communication skills, strong analytical & logical abilities, problem solving skills and fast learning.

TECHNICAL SKILLS

RDMS: Oracle10g, 11g, 12c

Languages: SQL, PL/SQL,C,Bashshell

Tools: RMAN, OEM,SQL*Loader,data pump, SQL Developer, TOAD, putty

Tuning Tools: ASH,TKPROF, EXPLAIN PLAN, STATSPACK, ADDM, AWR

Operating Systems: AIX, Linux, Red HatEnterpriseLinux, HP-UX, SCO, Sun Solaris, Windows

Virtualization Technologies: VMware,OracleVirtual Machine

Utilities: SQL Loader, Exp/Imp, Data Pump, Expdp/Impdp, TKPROF,TRCAandStats pack, 10046 Trace, Oradebug.

PROFESSIONAL EXPERIENCE

Confidential, Atlanta, GA

Senior Oracle DBA

Responsibilities:

  • Architected, Designed, Installed and configured a 4 node RAC Database on Solaris 11, and Linuxplatforms.
  • Ensure technical documentation is kept up to date (architecture/integration diagrams and documentation)
  • Identify training needs within support organization and proactively create and deliver training sessions to address these requirements.
  • Execute the collection of requirements, product comparisons, product research, and architecture.
  • Implements, administers, manages, monitors, and tunes the assigned application databases in development, pre-production and production environments.
  • Designs and implements performancetuning improvements and advises developers on tuning options. Ensures that data integrity and datasecurity is maintained.
  • Demonstrates advanced troubleshooting and analytical skills through problemresolution.
  • Actively participating and/or serving in a supporting role to meet the customer's obligations and mandates. Prepares status updates for management. Provide technical leadership to the Applications
  • Support Team, Developers and System Admins.
  • Support Production, QA, DEV, UAT databases.
  • Performed and taken care of various node eviction issues
  • Provide level advanced technical system expertise, oversight, and accountability for resolution of outages, service level issues, and user/customer support needs in coordination with the Steady state support teams.
  • Established RMAN backups and recovery policies.
  • Upgraded production and all test databases from11.2.0.X to 12.1.0.2.
  • Clonedoracleproduction databases for development and testing.
  • Cross platform Migration of databases using export/import and datapump.
  • Daily health checkup of databases.
  • Participate in planning strategies for future database needs for business needs in perspective of capacity planning, performance and available technology.
  • Configuration ofOracleDisaster Recovery Solution (DR) from Production Server to the DR Server.
  • Resolution of day to day related issues, documentation ofOracleDBAroutine tasks.
  • Creating documentation during project planning, project execution and project maintenance phases.

Environment: Oracle11gR2,OracleRAC (11g),OracleGrid Control, RMAN, ASM, SQL Developer, TOAD, SQL*Plus.

Confidential, Pittsburgh, PA

OracleDBA

Responsibilities:

  • Build RAC node clusters.
  • Created databases using scripts, OMF and via silent installs.
  • Handling the code deployments developed by Developers on Dev, Test and Production.
  • Managing users, profiles, roles and table space according to the requirement.
  • Created shell script to automate jobs.
  • Database user backup using Export /Import Utility. And database backup using data pump.
  • Production refresh to PRR environment and conversion environment when required.
  • Done partitions on tables and indexes to get better performance on large tables.
  • Monitoring Backup report, Database sync report (Verifying Production & Standby Database Synchronization), AWR report and wait events reports using OEM and Custom scripts.
  • Configured OEM for the performance monitoring and database administration.
  • Monitored indexes and analyzed their status for performance tuning and query optimization
  • Used SQL Trace, TKPROF, STATSPACK, PerfStat, Explain Plan, AWR and ADDM for database performance monitoring and tuning. Ensure availability of databases and all related services such as RAC, ASM.
  • MigratedOracleNon-RAC databases toOracleRAC databases.
  • MigratedOracledatabase from file system to ASM.
  • Define database backup/restore procedures using RMAN and TSM. Manage database backups and perform recovery. Participate in DR exercise twice a year to validate recovery procedures.
  • Prepare documentation and baselines. Analyze gap assessment and create road maps to overcome those gaps usingOraclebest practices.
  • Perform database tuning and performance monitoring at the OS level, DB level and SQL level. Analyze data and make recommendations relating to performance and efficiency of data storage.
  • Perform capacity testing before implementing new major application release to production environment.
  • Provide advice and solution to Application Development Team to have effective use of indexes, how to reduce waits or other advices from OEM Grid control.
  • Work with the system administrator and storage administrator to perform software installations, and to configure hardware and software so that it functions optimally with theOracleinfrastructure.
  • Monitor and maintain database security. Co-ordinate with Security administrator in adding, maintaining and removing users account, administering quotas, auditing, and checking for security issues.
  • Written shell scripts to automate tasks.
  • Provide after hours and weekend on-call support on a rotation basis.

Environment: Oracle10.2.0.4, HP-UX 11, Sun Solaris 10.0, RAC,RMAN, Data Pump, SQL TRACEEXPLAIN PLAN

Confidential, Atlanta, GA

Oracle DBA

Responsibilities:

  • Used RMAN duplicate database feature to move/clone databases on Linux, AIX and Solaris.
  • Cluster Installation and Configuration, Administering databases in RAC for high availability.
  • Installation, Configure, setup of 11g RAC on Linux.
  • Add new nodes to RAC 11g Cluster to distribute the load.
  • Installed and implemented 10g RAC with 2 nodes with ASM.
  • Upgraded Databases from 10g to 11g and applied patches as per requirement.
  • Worked extensively on data center migrations on multiple database versions. i.e., 9i, 10g and 11g.
  • Database migration from 10g to 11g.
  • 24x7x365 production support.
  • Designed, configured and maintained backup and recovery policies including RMAN backups.
  • SQL, PL/SQL Tuning and Monitoring.
  • Compared and contrasted multiple snapshots using AWR.
  • Experience in monitoring and tuning SQL Server and database performance using SQL Profiler, Index Tuning Wizard, and Windows Performance Monitor.
  • Recovered databases and clone applications Using RMAN.
  • Responsible for resolving several complex recovery scenarios (including RMAN) with critical production database.
  • Extensively used AWR, ADDM, TKPROF, and SQL Trace for database performance statistics.
  • OEM Grid Control installation and configuration for monitoring and performance tuning.
  • Proactive performance monitoring, and capacity planning for future database and server growth.
  • Performed Range Partitioning as a cause to improve the performance of the database.
  • Performed Cross platform migration using transportable tablespaces and RMAN.
  • Performed Import and Export usingOracleData pump utilities.
  • Administered and maintained database security policies and procedures.
  • Experience with administration of high-performance and large-scale multi-terabytes databases.
  • Used external tables and SQL*Loader to import data from flat files.
  • Monitored database space requirements and adjusted for future needs.
  • Performed version upgrades and patch installs.
  • Designed and implemented database backup/restore methodologies, responsible for troubleshooting performance and networking issues. Basic OS system administration.
  • Create and maintain users, roles and privileges.
  • Build RAC from scratch.
  • Generated ASH, AWR, ADDM reports from Grid Control and command line.
  • Provided 24/7 on-call support.

Environment: Oracle10g, 11g on RAC,OracleEnterprise Manager,OracleGrid control, RHEL, HP UNIX.

Confidential, Atlanta, GA

Oracle DBA

Responsibilities:

  • Installed, configured, and maintainedOracle10g and 11g on Linux
  • Upgraded fromOracle10g to 11g.
  • Performed the migration from Tandem toOracle11g.
  • Expertise in designing the table structure using Visio by creating ER diagram and normalized all the tables from the scratch according to the specifications provided.
  • Performed administrative maintenance, monitoring onOracledatabase systems in a global 24x7 operational environment.
  • Performed Database Refresh from Production to Development databases.
  • Used PL/SQL (stored Procedures, triggers, packages), SQL* PLUS, SQL* LOADER oforacle database.
  • Supported different Databases like Testing, Staging and Training.
  • Performed installation and configuration ofOracle10g/11g RAC databases on Linux.
  • Upgraded theOracle10g database to 11gR2 version and also applied patch set and interim patches whenever required to make the database software up to date.
  • Installed RAC onOracle10g and worked on ASM feature ofOracle.
  • Worked closely with developers during release and usedoracleadvanced features to achieve minimum downtime.
  • Good experience in Performance tuning of large databases.
  • Monitoring Day-to-Day Backups, Log's & recovering them as per the requirement. Utilized Log Miner Technology & applied Application Database Transactions on other Databases.
  • Successfully implemented Backup & Recovery using RMAN, Hot and Cold backups.
  • Taking the RMAN incremental and cumulative backups.
  • Scheduling the databases backup using Cron tab and VERITAS net backup.
  • Perform Logical backup using full/partial export/import and data pump.
  • Creating Logical and Physical database structure, Creating and altering Tablespaces. Managing Users and Resources, Granting and revoking privileges through Roles.
  • Provided instance level performance monitoring and tuning for Event Waits, Sessions, Physical and Logical IO and Memory Usage.
  • Supported development teams by providing SQL statement tuning and optimizing ETL procedures and removing load and query performance bottlenecks by using tools EXPLAIN PLAN, STATSPACK, and TKPROF.
  • Perform Daily Monitoring ofOracleInstances, monitor users, and table spaces, Memory Structures, Rollback Segments, Logs and Alerts.
  • Creation of Users and granting them the required Roles and Privileges accordingly.
  • Involvement in space management, managed quotas.
  • Implemented advanced features ofOracle10g such as Automatic Database Diagnostic Monitor (ADDM), Automatic Workload Repository (AWR) for monitoring database performance.
  • Configuration of Listener and Net Service names using NETCA and NETMGR.
  • Cloned schemas, objects and data on new server using Data pump.
  • Managing databases on multiple servers.
  • Worked extensively on monitoring 10G grid control database, configuration of error notifications, installing listeners, and adding them to the grid control.

Environment: Oracle11g/10g, UNIX RHEL 5.x, OEM (Grid Control), RMAN, RAC, Explain plan,OracleSupport, SQL Developer, Data Pump, Business Objects, Toad, AWR, ADDM, SQL Loader

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