Oracle Dba Resume
NJ
SUMMARY
- Over 7+ years of experience in Information Technology as anOracleDBAon Linux, UNIX and Windows operating system environments.
- Experience as a Production support/Operations DBA with Multi - Terabyte 24x7/large databases and as a Development Engineer/Data WarehouseDBA, and development support 11g R2, 10gR2, 9i databases on different platforms with practices for Oracle Database Infrastructure, Standards and Implementation
- Extensive experience in Installations, configuration, Cloning, Security, Patching, Upgrades.
- Implementation of Enterprise wide Database Monitoring enabling Oracle11g Enterprise Manager Grid Control. One stop solution for monitoring every singleOracleDatabase within the global enterprise
- Database Backup and Recovery using RMAN including duplicating/cloning Databases across with point-in-time recovery option.
- Implementation of Oracle Backup and Recovery strategies using COLD BACKUP, HOT BACKUP and RMAN environment.
- Proficient in analyzing information system needs, evaluating end-user requirements, custom designing solutions, troubleshooting for complex information systems management.
- Polished leadership skills with ability to motivate teams to increase productivity.\
- Worked on Middle ware and Oracle Real Application Clusters (RAC) with Data guard/or other replication technologies.
- Performed Tablespace point in time recovery (TSPITR) using RMAN
- Worked on Flash back, High Availability with Oracle Linux Red Hat/VMware & Oracle virtual box environment
- SQL Performance tuning and DBA performance tuning like explain plain, Auto trace, AWR,Statspack etc.
- Applying Patch set, Critical Patch Update (CPU)/Patch Set Update (PSU) and One-off Patches using OPatch and run Installer under UNIX and Windows.
- Performance Tuning of Oracle database using OEM GC, Cost optimizer, SQL analyzer Performance Manager, Stats pack, AWR, ADDM, ASH, RDA, Explain plan (10046), TKPROF, SQL TRACE and Ordebug.
- Installed and configured Oracle Enterprise Manager Grid Control 10g for database monitoring, performance, diagnostics.
- Data transferring using Export/Import utilities and SQL*Loader.
- Expertise in creating and maintaining databases to Oracle Optimal Flexible Architecture (OFA) standards in very large scale database environment (VLDB) and mission critical OLTP and DSS systems.
- Resolved database network problems using Oracle Net Configuration Assistant, Oracle Net Manager, Netstat and ping utility.
- Involved in writing stored Procedures, Functions and Triggers in PL/SQL to interface application with database system.
- Developed shell scripts for regular administration tasks that include various Cron jobs for alert logs, Backups, restore and recovery.
- Created service requests with Oracle support for troubleshooting database issues.
- Experience in creating partition tables and Materialized views.
- Expertise in Database Security and Auditing.
- Experience in Managing Database Structure, Storage Allocation, Table/Index segments, Undo segments, Constraints, Database Access. Solid understanding of SDLC and CMM models.
- Provided 24 x 7 support and flexible to work beyond regular hours.
- Strong ability to handle multiple projects simultaneously and ability to work independently or in a team environment and function successfully in a highly stressful environment.
- Experience in managing, training and mentoring a DBA team
TECHNICAL SKILLS
Databases: Oracle10g & 11g, Teradata12, SQL server2005/ 2008
Operating Systems: AIX/HP-UX/Windows, Mainframe
Languages: PL/SQL, SQL, T-SQL
Tools: /Utilities: Tidal Scheduler, Facets5.1, Jprofiler, APP Dynamics, PowerCenter9.1
Backup/Recovery: Exp/Imp, Datapump, RMAN backup, SQL Loader, vmstat, nmon, perfmon, AWR, OEM, JIRA, QC, TFS, SVN.
PROFESSIONAL EXPERIENCE
Oracle DBA
Confidential - NJ
Responsibilities:
- Maintenance of production & development databases including tablespace management, user creation, granting privs, roles etc.
- Automated hot backups utilizing a combination of incremental, differential & full RMAN backups
- Maintaining archive data on appropriate storage devices
- Tracing, troubleshooting with database preforming & tuning issues
- Analyzing WR reports to identify on-going/proactive issues and worked with other team members to find a solution
- Successfully implemented physical standby database usingOracleData guard and Active Data guard feature for High availability configuration in RAC environment
- Providing database & system management for multiple servers
- Using AWR, ADDM and variousOracleAdvisors to tune the database.
- Extensively used DATAPUMP and Import/Export utilities for logical backups.
- ConfiguringOracleEnterprise Manager (OEM) 11g
- ConfiguringOracleGrid Control Agent
- Supported theDBAteam in managing over 80 databases onOracle11g on Windows
- Preformed variousDBAMaintenance tasks such as rebuilding indexes, validating constraints, reorganizing tables
- Responsible for creating users and assigning of roles & privileges
- Assisted Senior DBAs with any issues relating to performance monitoring & tuning by usingoracle supplied tools/software
Environment: OracleServer 10g/11g SQL Server, LINUX/UNIX, SUN OS
Oracle DBA
Confidential - NJ
Responsibilities:
- Install client/serverOracleand MS SQL Server Software
- Wrote scripts to create tables, views, indexes and synonyms required meeting developer needs.
- Working with Java J2EE developers to develop and formulate capacity planning for 11g databases.
- Worked on in house installation ofOracleon different platforms, loaded user data to reproduce the problem, applied newOraclepatch, managed database backup using RMAN, upgradedOracle database 10.2.0.4 to 11.2.0.4.2
- Database reorganizations and refresh schema-using Export/Import. Creating the database, table spaces, tables, indexes, setting privileges and user logins.
- Creating physical databases with multiple table spaces from logical and physical data model
- Monitored and performed database sizing, tablespace management and rollback tablespace management, transaction management and security administration
- Data migration between databases using bothOracle10g and 11g export/import utility andOracle11g exp/imp data pump.
- Prepared scripts to tune developer SQL codes to maximize result return time
- Worked on large databases inOracle11g with multiple instances using Veritas Cluster.
- Performed cold and hot backup using Oracle's Data pump.
- Provided remote technical support using SSH and terminal services
- Troubleshooting, Restructuring and tuning for optimal performance of existing databases that were poorly designed for heavy hits.
- Cloned databases using scripts as well as RMAN. Installation, setup and configuration of Data guard
- Administer RAC database using OEM
- Involved in design and enforcing of standards in place to ensure that all application design and code is produced with proper integrity, security and performance
- Refreshed schema using Export/Import. Created the database, tablespace, tables, indexes, set privileges and user logins
- Resizing and reorganization of database objects: Tables, Indexes, Rollback segments and Redo log files of existing production and development systems.
- Resizing Tablespaces, Tables, indexes, Rollback segments.
- Design of databases following OFA: Creating Databases schemas, profiles, database links, Snapshots and Synonyms of objects as required to ensure data quality and security to comply with company's business rules.Oraclescripting in Windows/ Solaris and UNIX platform.
- Backup / Recovery methodology specification for mission critical databases
- Performed hot and cold Backups.
- Scheduled daily Exports/Imports to serve as temporary backups.
- Performed proactive and reactive tuning/managing database space utilization and growth
- ImplementingOracleASM and resolving ASM related issues
- Detailed analysis of the business and users requirements by doing various information gathering techniques.
Environment: OracleRMAN,Oracle11g (11.2.0.2), DBMS STATS, Datapump, SQL TRACE, TKPROF, EXPLAIN PLAN
Oracle Database Administration
Confidential - Minneapolis, MN
Responsibilities:
- Responsible for Installation and administration ofOracleRAC 10gR2 andOracleRAC 11gR1 production and development databases.
- Provided 24*7 with an on call pager.
- Performed cloning using RMAN to set up development and test databases from Production database.
- Upgraded the database from 10gR2 (10.2.0.5) to 11gR1 (11.1.0.6).
- Involved in database migration from single instance to 3 nodes RAC Database.
- Creation and Configuring Services using SRVCTL and CRSCTL.
- Managing databases usingOracle10g Grid Control.
- Responsible for installing and maintaining the Standby database.
- Hands on experience in administering Tablespace Management, User Management, UNDO management etc.
- Used Data Guard broker to monitor Data Guard configurations on standby database.
- Good working and implementation knowledge on Data Guard and Stand-by databases for fail-over and recovery.
- ConfiguredOracleStreams for replication between two databases and tuned the streams pool for higher performance.
- Configured Net Backup with RMAN for database backups and restore. Also implemented logical, cold and hot backups.
- Applied patches whenever necessary by downloading them from Metalink.
- Involved in De-fragmenting data blocks of Tablespaces for optimized performance. Also partitioned large tables to increase performance.
- Rebuilt indexes for better performance ofOracledatabase.
- Worked extensively in Performance Tuning at various levels including instance tuning, Query tuning, Database performance tuning.
- Performance tuning using tools like EXPLAIN PLAN, SQL*TRACE, TKPROF, STATSPACK for optimized results.
- Performed database object sizing (performance tuning of database objects) and space allocation.
Environment: RDBMS (10g,11g), Solaris 8 (SPARC), RHEL4, python, shell scripting, Perl scripting, TOAD, EXPALIN PLAN, TKPROF, EXPORT/IMPORT, SQLLDR, RMAN.
Oracle Developer / DBA
Confidential
Responsibilities:
- Supporting large mission critical databases in a 24x7 environment
- Migration of database from Oracle 9i to Oracle 10g
- Working with database Monitoring and Tuning
- Lead efforts to develop and improve procedures for automating monitoring.
- Integrated the Backup status reporting for the entire database in the enterprise to enable the web reporting using Oracle SQL, PL/SQL and kern shells, Unix shell Scripting.
- Responsible for writing database programming to Store/Retrieve the information from the database using SQL
- Wrote Stored Procedures according to specs and control files for input to SQL*Loader utilities for loading data from external files into the Oracle database Adfa
- Creating databases, objects, roles and privileges Af
- Partitioned large tables to increase the performance Adf
- Configured scripts to monitor activity with database Daf and Implement Hot, Cold and Logical backup plans
- Used Oracle UTL file features to create flat files and Procedures for Data Extraction Fa
- Worked on Oracle Configuration, oracle Tuning and Oracle Patch Administration Af
- Knowledge experience with Ethernet and mobility systems Adf
- Creation of Table space, Data files, Indexes, Rollback Segment and monitoring them Fas
- Performed Database Tuning
- Performed Database Security and Integrity
- Wrote extensive Sub Queries, PL/SQL procedures, functions, database triggers and packages
- Created partitioning of its types like Range, List & Hash by the specific uses.
Environment: Oracle 9i, 8i, RMAN, SQL*Loader, Sun Solaris, RHEL, Oracle Linux.
Oracle Application / Core DBA
Confidential
Responsibilities:
- As part of a 2-member DBA team, managed and supported more than 50 databases 24x7.
- Personally responsible for about 25 databases. Performed Oracle installations, applied patches, upgraded databases on several instances.
- Database Installations in DR and DC servers.
- Perform logical and physical backups for recovery by using exp/imp, expdp/impdp, OS backups and RMAN tool.
- 24*7 Production Databases Support and Monitoring using Unix Shell Scripts.
- Performing database Backup & Recovery using RMAN and Export/Import Utilities.
- Unix Shell scripting for Automation of DB monitoring, Backup, File-system Size thresholds, Oracle Errors.
- Database Administration Support for all the Application Modules and Development Teams (CCC, WSS, GIS, SSO, CCB, MDAS, MDM, SOA, MIS, EA).
- Performance tuning and troubleshooting of poorly performing programs.
- Perform Daily Monitoring of all Critical instances using and monitor users, Tablespace, memory structures, logs, and alerts.
- Automating Archival process and fragmentation processes through shell scripts.
- Built databases using exp/imp & Data Pump moving data from PROD Databases to Staging/DEV/Test Databases.
Entry level oracle DBA
Confidential
Responsibilities:
- Involved in documenting of Linux and Windows environment and configuration details
- Creating database objects like tables, views index.
- Involved in user account management.
- Executed Hot, RMAN backup.
- Documentation of database backup and recovery standards.
- Constantly monitoring the performance of database and viewing Alert log files.
- Working closely with developers to get the database requirements.